Replace line feed with perl

I'm trying to replace 'line feed & space' with a line feed:
perl -pi -e 's/\n /\n/g' ~/Desktop/scrap
With no luck. Any help?

I'm guessing this is related to line endings. If the file has legacy mac line endings it will behave as a single line. Try running the following. If it reports 0, then you'll need to convert the line endings:
<pre style="border: 1px solid #ddd; padding-left: .75ex; padding-top: .25em; padding-bottom: .25em; margin-top: .5em; margin-bottom: .5em; margin-left: 1ex; max-width: 25ex; overflow: auto; font-size: 10px; font-family: Monaco, 'Courier New', Courier, monospace; color: #444; background: #eee; line-height: normal">wc -l < ~/Desktop/scrap</pre>
The following will convert old mac line endings (as well as windows) to unix:
<pre style="border: 1px solid #ddd; padding-left: .75ex; padding-top: .25em; padding-bottom: .25em; margin-top: .5em; margin-bottom: .5em; margin-left: 1ex; max-width: 40ex; overflow: auto; font-size: 10px; font-family: Monaco, 'Courier New', Courier, monospace; color: #444; background: #eee; line-height: normal">perl -pi -e 's/\r\n?/\n/g' ~/Desktop/scrap</pre>

Similar Messages

Replace Line Feed a field with imported data

Hi, I’m trying to replace a line feed in a form field where data is imported to the field.
I can make the replace function work when typing into the field, but I can’t figure out how to make it work on imported data.
This is the script I use:
if (xfa.event.newText.match(/[\n]/) )
xfa.event.change = "LF"
Regards,
Kirstine

Hi,
So if I am getting you correctly, the imported data has the new lines (\n)?
You could try the layout:ready event and test against the field's .rawValue. But this is going to be very inefficient.
Niall

How to Replace Line feed

Hi All,
i want to replace a line feed which is shown as ## in debug mode with space..
Though i have tried replacing it by giving hexadecimal value of # but still its not gettign replaced.
So how do i replace these occurences of line feed in the string which i am using..
Regards,
Syed

Hi try this way :
data: value type string....
data: lv_feed type c value CL_ABAP_CHAR_UTILITIES=>CR_LF.
replace all occurrences of lv_feed in value with space.

Search and Replace String Function replaces line feeds when I only want spaces replaced?

I need to replace every instance of a space or series of spaces in a multi line string with commas (or tabs) so I can dump it into a spreadsheet.
I am using the regular expresion [\s]+ and it works but it is also replacing the end of lines (\r\n) too.
How can I make it replace the spaces but leave teh end of lines intact?
Solved!
Go to Solution.
Attachments:
replace.vi ‏6 KB

Right click on the search string and change it to '\' Code Display. Enter the space character (\s) correctly - you've got \\s right now.

Folder action to find and replace text and change line feeds

I want to use a folder action to find and replace text and change Mac carriage returns to DOS line feeds inside text files.
The text to be replaced is: "/Users/wim/Music/iTunes/iTunes Music/Music" (without the quotes)
This text has to be removed (i.e. replaced by an empty string)
The text occurs many times within each file.
The files are playlists exported from iTunes in the M3U format (which are text files). They contain Mac carriage returns. These need to be changed to DOS line feeds.
I have found the following two perl commands to achieve this:
To find and replace text: perl -pi -w -e 's/THIS/THAT/g;' *.txt
To change carriage returns to line feeds: perl -i -pe 's/\015/\015\012/g' mac-file
I know that it's possible to make a folder action with Automator that executes a shell script.
What I want to do is drop the exported playlists in M3U format in a folder so that the folder action will remove the right text and change the carriage returns.
My questions are:
Is it possible to make a folder action that executes command line commands instead of shell scripts?
What is the correct syntax for the two commands when used in a folder action shell script? Especially, how do I escape the slashes (/) in the string to be removed?
Thanks for your help

Ok, I've include an applescript to run a shell command. The applesript command quoted form makes a string that will end up as a single string on the bash command line. Depending on what you want to do, you may need multiple string on the bash command lines. I've included some information on folder actions.
It is easier to diagnose problems with debug information. I suggest adding log statements to your script to see what is going on. Here is an example.
    Author: rccharles
    For testing, run in the Script Editor.
      1) Click on the Event Log tab to see the output from the log statement
      2) Click on Run
    For running shell commands see:
    http://developer.apple.com/mac/library/technotes/tn2002/tn2065.html
on run
    -- Write a message into the event log.
    log " --- Starting on " & ((current date) as string) & " --- "
    -- debug lines
    set desktopPath to (path to desktop) as string
    log "desktopPath = " & desktopPath
    set unixDesktopPath to POSIX path of desktopPath
    log "unixDesktopPath = " & unixDesktopPath
    set quotedUnixDesktopPath to quoted form of unixDesktopPath
    log "quoted form is " & quotedUnixDesktopPath
    try
        set fromUnix to do shell script "ls -l " & quotedUnixDesktopPath
        display dialog "ls -l of " & quotedUnixDesktopPath & return & fromUnix
    on error errMsg
        log "ls -l error..." & errMsg
    end try
end run
How to set up a folder action.
1) right click on folder. click on Enable folder actions
2) Place script in
/Library/Scripts/Folder Actions Scripts
3) right click on folder. click on attach folder action
pick your script.
Create a new folder on the desktop & try.
You can put multiple folder actions on a folder. There are other ways of doing this.
Here is my test script:
on adding folder items to this_folder after receiving dropped_items
    repeat with dropped_item_ref in dropped_items
       display dialog "dropped files is " & dropped_item_ref & " on folder " & this_folder
    end repeat
end adding folder items to
How to make the text into an AppleScript program.
Start the AppleScript Editor
/Applications/AppleScript/Script Editor.app
In Snow Leopard it's at: /Applications/Utilities/AppleScript Editor
Copy the script text to the Applescript editor.
Note: The ¬ is typed as option+return. ption+return is the Applescript line continuation characters.
You may need to retype these characters.
Save the text to a file as an script and do not check any of the boxes below.

Mail attachment generated in UDF in SAP PI 7.1 - Issue with line feed

Hello,
Situation is:
Implemented a scenario in SAP PI 7.1 with a mail receiver following this thread:
/people/samuel.chandrasekaran2/blog/2008/10/06/xi-mail-adapter-dynamically-building-attachment-and-message-body-content-using-a-simple-udf
which is about moving message lines from sender into an attachment forn the receiver mail.
It is working great!
The receiver gets the mail including the attachment with all added lines.
But when opening this mail there is an issue depending on the program we are using to open the attachment
which is defined as txt file
- Using MS Editor 5.1 (Windows XP 2007, SP3) the Carriage returns and line feeds (added with
in the UDF) to separate the message lines are not recognized. In the Editor each
    is shown as □   within the text. Word wrap (flag set in the editor) is different to the carriage return/line feeds set in the file.
- Using MS Notepad 5.1 (Windows XP 2007, SP3)   situation is the same but
    is NOT shown as □ , it simply seems to be unvisible. Word wrap (flag set in the editor) is different to the carriage return/line feeds set in the file.
- Using Word 2007 the carriage returns are recognized and used in a correct way to display the file content. But now mutated vowels (äüö) are not recognized. They are displayed as
So I followed this thread:
http://help.sap.com/saphelp_nw04/helpdata/en/96/f04142099eb76be10000000a155106/content.htm
Nice....
In the editors there is no change, but when opening the file in Word it asks now how to convert the file content
(proposing UTF-8) and Word recognizes mutual vowels.
But there seems to be a side effect....
Following the second link, PI recognizes an error.
This is the error message.
MP: exception caught with message Null as XI message received (PrincipalData in ModulData is null)
Adapter Framework caught exception: Null as XI message received (PrincipalData in ModulData is null)
Delivering the message to the application using connection Mail_http://sap.com/xi/XI/System failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: java.lang.Exception: Null as XI message received (PrincipalData in ModulData is null).
But the message is sent to the mail recipient which could be ok if PI would not repeat the mail sending now for several times.
So we will receive not one but a number of mails.
So we removed the modul recommended in this help link from the channel.
Result: Behaviour in Word changed now to the described one. But the errors are no longer coming up in channel monitoring incl. message send repetition. So this is a first success. But the partner wants to process the files first with one of the named editors. So we are looking for another solution now to fix the last issue!
Your ideas are really welcome!
Best regards
Dirk

Hi,
as I found this in wikipedia:
Another common problem is the use of '\n' when communicating using an Internet protocol that mandates the use of ASCII CR+LF for ending lines. Writing '\n' to a text mode stream works correctly on Windows systems, but produces only LF on Unix, and something completely different on more exotic systems. Using "\r\n" in binary mode is slightly better, as it works on many ASCII-compatible systems, but still fails in the general case. One approach is to use binary mode and specify the numeric values of the control sequence directly, "\x0D\x0A".
Back to my issue:
In the UDF I am adding "\r\n" but only the "\n" seems to survive!
In Mapping test line feeds are available and the lines are shown as expected.
Using Notepad ++ to open the created txt file from the mail shows that LF is in the file at each end of line but CR is missing.
CR is only at the end of the last line in the file and is not from the UDF that creates the mail or the UDF that creates the attachment lines. Seems that this is added somewhere else behind the mapping.
This is what I found in galileo computing
(http://www.galileocomputing.de/glossar/gp/anzeige-11241/FirstLetter-Z, SORRY, only available in german language!):
In Parsing of XML-Documents the XML-Parser changes the end of line delimiter internally in general to a simple line feed (LF, #0A) as usual in UNIX. ..... In Windows this could result in problems with readability of source texts (e.g. in Notepad) which can be solved by choosing the right editor.
My target application is on Windows and not able to "choose" the right editor (PI system is on windoes OS too) !
But Im wondering where the CR at the end of the text comes from when all the \r\n will be replaced with \n as described.
Ideas are really welcome!
Best regards
Dirk
Edited by: Meinhard Dirk on May 31, 2011 2:45 PM

Find the LINE FEED and replace it.

Hi
I am using ORACLE 11g R2. I am having some text data in a variable as below :-
Variable = V_TEXT
V_TEXT :=
'/u01/oracle/data/file1.txt
/u01/oracle/data/file2.txt
/u01/oracle/data/file3.txt'I want to place an '|' (pipe symbol) at the end of each line. So the expected output is as below :-
'/u01/oracle/data/file1.txt|
/u01/oracle/data/file2.txt|
/u01/oracle/data/file3.txt|' I tried with replace() function and replaced return character i.e. CHR(10) with '|' but it gives me an wrong output and also at the end of last line we dont have an return character.
after searching a lot on internet I found that i can do this with the help of regular expression.
As far as i have studied : -
The line feed character is the last character in the line or we can say it is end of line. This character is noted in oracle as 'x0a'
I want to replace this character in every line and place an '|' symbol.
can anyone guide me how to do it ??
Thanks in advance.

Aha... Now that is a different expected output as in your original post ;-)
One way of doing it could be something like this:
declare
v_text varchar2(32767) := '/u01/oracle/data/file1.txt
/u01/oracle/data/file2.txt
/u01/oracle/data/file3.txt';
begin
v_text := regexp_replace(
regexp_replace(v_text,chr(10)||'\s*'||chr(10),chr(10))
,'$','|',1,0,'m'
dbms_output.put_line(v_text);
end;
/Inner regexp replaces "linefeed followed by zero or more whitespace followed by linefeed" with a single linefeed. So this removes the blank lines.
Then the outer regexp takes care of the | characters.
(It might be possible to wrap it up in a single regexp, though I can't think of a way just off hand ;-) )

Problem with "carriage Return" or "Line Feed" in a table

Hello,
I need help with the function Zeichen(), so called it in german, I'm not sure if it is char() in english.
In Pages Version 4.0.1 (746) I've created a table in Pages with this function to make an "carriage Return" in a cell.
Here an example: { ="Hello" & Zeichen(10) & "World" }, in the cell is now:
| Hello |
| World |
But in Pages Version 4.0.3 (766) this function ZEICHEN() not allow the number 10 and other till 32 (I allready read the manual and understand this problem).
Anybody an idea to make a "Carriage Return" or "Line feed" in a formular, in a cell, in a table, in Pages?
Thanks
Detlev Kormann

kdetlev wrote:
Your workaround will not be possible in my table, because there is no empty cell in the table, but I think it is also a good help too.
*In fact I forgot that you are using a table in Pages.*
Remaining on my first idea, In Numbers we may achieve the same goal using an auxiliary table with a single cell containing the needed line break.
If this table is named "LineBreak",
the formula will be:
="Hello"&LineBreak :: $A$1&"World"
*In Pages, here is my workaround:*
Enter the cell
type a§b
don't type the character § but ctrl + return.
The cell will contain
a
b
with the arrow, move before the a
type =B2&"
delete the original a
move to the right
delete the original b
type "&C7
Yvan KOENIG (VALLAURIS, France) mercredi 7 octobre 2009 17:20:04

Text file - replace a pattern with part of the previous line? -SOLVED

Hello, I'm stuck with sed/awk/grep...
So I have a file with lines like this:
Nice bunch of words <STUFF> <STUFF> <IMPORTANT_DELIMITER_TYPE_1> <STUFF> <IMPORTANT_DELIMITER_TYPE_2> <STUFF>
Even Nicer bunch of Words <STUFF> <IMPORTANT_DELIMITER_TYPE_1> <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words <STUFF> <STUFF> <STUFF><IMPORTANT_DELIMITER_TYPE_1><STUFF>
Then, I want to move the "important delimiters" to new lines (might be better not to do this in fact...)
Nice bunch of words <STUFF> <STUFF>
<IMPORTANT_DELIMITER_TYPE_1> <STUFF>
<IMPORTANT_DELIMITER_TYPE_2> <STUFF>
Even Nicer bunch of Words <STUFF>
<IMPORTANT_DELIMITER_TYPE_1> <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words <STUFF> <STUFF> <STUFF>
<IMPORTANT_DELIMITER_TYPE_1><STUFF>
And finally, I want to replace the important delimiters with the content of the line they came from originally, up to the first angle bracket:
Nice bunch of words <STUFF> <STUFF>
Nice bunch of words <STUFF>
Nice bunch of words <STUFF>
Even Nicer bunch of Words <STUFF>
Even Nicer bunch of Words <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words<STUFF>
How can I accomplish this using absolutely anything at all that doesn't involve too much manual effort (the file is about 30,000 lines of this stuff)
Thanks !
Last edited by darkbeanies (2013-09-01 19:18:29)

"<STUFF>" is not irrelevant. In your original example
Nice bunch of words <STUFF> <STUFF> <IMPORTANT_DELIMITER_TYPE_1> <STUFF> <IMPORTANT_DELIMITER_TYPE_2> <STUFF>
Even Nicer bunch of Words <STUFF> <IMPORTANT_DELIMITER_TYPE_1> <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words <STUFF> <STUFF> <STUFF><IMPORTANT_DELIMITER_TYPE_1><STUFF>
you want to break the lines along the delimiters:
Nice bunch of words <STUFF> <STUFF>
<IMPORTANT_DELIMITER_TYPE_1> <STUFF>
<IMPORTANT_DELIMITER_TYPE_2> <STUFF>
Even Nicer bunch of Words <STUFF>
<IMPORTANT_DELIMITER_TYPE_1> <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words <STUFF> <STUFF> <STUFF>
<IMPORTANT_DELIMITER_TYPE_1><STUFF>
and then you say that you want to replace the delimiters with the contents before the first angle bracket:
Nice bunch of words <STUFF> <STUFF>
Nice bunch of words <STUFF>
Nice bunch of words <STUFF>
Even Nicer bunch of Words <STUFF>
Even Nicer bunch of Words <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words <STUFF> <STUFF> <STUFF>
Wonderful bunch of Words<STUFF>
but you have clearly made a distinction between the "nice bunch of words" and "<STUFF>", otherwise the output would have been
Nice bunch of words <STUFF> <STUFF>
Nice bunch of words <STUFF> <STUFF> <STUFF>
So, do you want everything up to the first delimiter, or do you want everything up to <STUFF> in the replacement? If you only want the "nicer words" then you need some way to distinguish between them and "stuff" programmatically.
edit
Here's a trivial script that will split the lines along the delimiters and replace them with the contents of the line before the first delimiter:
#!/usr/bin/env python3
import re
import sys
def main(args=None):
for line in sys.stdin:
# Trim trailing newline.
line = line.rstrip('\n')
# Split by delimiters.
parts = re.split(r'<[^>]+>', line)
print(parts[0])
for p in parts[1:]:
print(parts[0] + p)
if __name__ == '__main__':
try:
main()
except (KeyboardInterrupt, BrokenPipeError):
pass
Usage
path/to/script < /path/to/input file
Last edited by Xyne (2013-09-01 18:34:55)

Problems uploading a text file with line feed characters from Windows

Hi,
I am using the FM GUI_UPLOAD to load a text file in which at the end of each line there is a line feed character. When I upload the file, the FM interprets the entire file as ONE record; it does not recognize the line feed character at the end of each file line. I am using the parameter in the FM "HAS_FIELD_SEPARATOR" and it does not do anything to remidiate this issue.
The funny thing is that WS_upload works like a charm and it separates every line in the text file according to the line feed character at the end of each file line.
Why a FM that is obsolete would work better and with less effort than the new one? We are on 4.6c and will go to ECC6.0 May 2009.
Can anybody recommenced a way to process this type of file using GUI_upload?
The file to process is downloaded from a bank Website into a Windows PC. Sending the file to Unix first is not an option.
Thanks,
Pierre Martinez
Edited by: Pierre Martinez on Aug 15, 2008 1:09 AM

Hi,
I have done that and Notepad does NOT interpret the line feed character. The file looks all messed up. Notepad does NOT split the data into records. The Hex character at the end of each file line is 0A.
The user will download the file into a Windows desktop from the bank's website and from there an ABAP program needs to read it and parse it. But the ABAP program can not even catch the entire file with gui_upload. WS_upload can catch it with no issues.
I tried catching the file into an internal table of data type string using GUI_upload, but it only catches two bytes of the file and nothing else.
I will try catching the file in some other type of data type for the internal table in gui_upload.
Once I catch it, I can split the file by the line feed character. I need to catch it first, but "my glove" is not big enough. Defining the internal table for the gui_upload as character is a guessing game since I really do not know how big the text file is since GUI_upload will put it in a one record.
Thanks.

How can an external table handle data with line feed between delimiters?

I have defined an external table as below. My data is pipe delimited and comes from a DOS system.
I already remove any carriage returns before putting the file into the DATA_DIR for reading. But
I have found that some of my VARCHAR fields have embeded line feeds.
Is it possible to have a definition that would remove any line feed characters between the delimiters?
Below I also threw together a sample data set there ID #2 has that extra character. Yes, I could
write an awk script to pre-process all my data files. But I am hoping there is a way for Oracle
to also do this.
I understand the LDTRIM to remove any leading and trailing spaces in the delimited field. Is there a
REPLACE or TRANSLATE option. I did a bit of searching but I must be asking the wrong things.
Thanks for any help
Eric
CREATE TABLE table_ext
id        NUMBER,
desc1     VARCHAR2(64 CHAR),
desc2     VARCHAR2(255 CHAR),
add_date DATE
ORGANIZATION EXTERNAL
TYPE ORACLE_LOADER
DEFAULT DIRECTORY data_dir
ACCESS PARAMETERS
    RECORDS DELIMITED BY NEWLINE
    CHARACTERSET WE8ISO8859P1
    BADFILE     log_dir:'table_ext.bad'
    DISCARDFILE log_dir:'table_ext.dis'
    LOGFILE     log_dir:'table_ext.log'
    FIELDS TERMINATED BY '|' LDRTRIM
    MISSING FIELD VALUES ARE NULL
    id        INTEGER EXTERNAL(38),
    desc1     CHAR(64),
    desc2     CHAR(255),
    add_date CHAR DATE_FORMAT DATE MASK "yyyy-mm-dd hh24:mi",
LOCATION( 'data.txt' )
PARALLEL
REJECT LIMIT UNLIMITED;
1|short desc|long desc|2001-01-01 00:00
2|short desc| long
desc |1999-03-03 23:23
3|short desc| long desc | 2011-02-02 02:02

Thanks for looking. But that relates to the record delimiter which in my case is the pipe character '|'. In my various data sets this is consistent. I expect each record to be one per line. But between two delimiters some data has a line feed. So I'm looking for a method that will "cleanup" the field data as it gets imported.
I was hoping there was an option that would ignore any embedded line feeds (\n) characters. I.e., those not at the end of the line.
Eric

Replacing windows new line characters with JAVA

I am importing a file into the database... the file is written by a client using windows, and it is a text file.
When there is a windows new line character at the end of the line (^M), it is getting saved to the database as part of the string value.
When we parse this data to run a report, the (^M) are being written back out to the file and causing the fields and data not to line up.
We want to REPLACE the ^M with some other character (whatever it doesn't matter)... how can java do that???
We tried replacing '/n' with '###' and it will show the ###, but the line still breaks.
TIA,
Tonya

The characters in question are cr = \r = ascii(13) and lf = \n = ascii(10). Windows uses CrLf, Unix uses Lf and some systems use just Cr. You can use the String.replaceAll or the pattern matching classes to fix this up, see java.util.regex.Pattern, and java.util.regex.Matcher.

Converting strings with line feeds to a single line with identifying chars

Hi, I dont want to re invent the wheel if there is something out there that does this already. I want to take some string with multiple
line feeds and convert it to a single line. For example:
"I want this string
to be changed to
a single line"
to this...
"I want this string\r\n to be changed tor\\n a single line"

vsekvsek wrote:
OK, Hope this will make better sense. So right now a I have a routine that loads files like below:
"TEST\r\n TEST1\R\n TEST2"It's not clear to me at this point what you mean by that string.
After the initial word TEST, does that string have a backslash character followed by an r followed by another backslash followed by an n? Or does it have a carriage return followed by a line feed. (\r followed by \n)
We format it when loading in a way that it will look like this when queriing from the DB
"TEST
TEST1
TEST2"It doesn't look like anything "when querying from the DB." That part doesn't make any sense.
Either the string has a backslash followed by an r, in which case when you render in in a text editor or on a console it will look like a single line with a visible backslash character followed by an r, or it has a carriage return (\r) in which case it will look like multiple lines when rendered in a text editor or on a console.
Later I re-extract it to a file from the DB and What confuses me is when I inspect the string it looks like this
"TEST\r\n TEST1\R\n TEST2"How are you inspecting it? If it's in a debugger or similar tool, it's not uncommon for it to be showing a carriage return character (\r) as a visible backslash followed by an r, rather than interpreting it and rendering a new line. This is so that you can see exactly what characters are in there, rather than wondering about the specific whitespace.
>
but it extracts to my file like
"TEST
TEST1
TEST2"
So I guess there are some hidden cr's or something messing it up that I need to manipulate but not sure how to apprach it?I still don't know what you're trying to do, or if you even have an actual problem with your data or are simply not understanding what you're seeing.

Replace Mac line breaks with Windows linebreaks?

Is there a simple AppleScript that could process a plain text file created on a Mac and replace the line breaks with Windows-compatible \r\n line breaks?
I thought this would be a very simple task but have been searching for quite a while and can't find anything.
Thanks.
Paul

There are several approaches to this. Here's one of them:
set theFile to (choose file)
set MacText to paragraphs of (read theFile)
set {oldDelims, my text item delimiters} to {my text item delimiters, (return & linefeed)}
set WindowsText to MacText as text
set my text item delimiters to oldDelims
set outputFile to (open for access theFile with write permission)
set eof outputFile to 0
write WindowsText to outputFile
close access outputFile
To explain, the first line asks you to choose the file in question - you could use any technique to identify the file, including hard-coding the path or using a drag-and-drop handler.
The second line gets the current paragraphs and calls them 'MacText'
The third line saves the current text item delimiters in oldDelims and sets the new text item delimiters to the CR+LF combination.
The fourth line performs the magic of transforming the file. It does this by coercing the list of paragraphs (obtained in line 2) into a single text block, and it inserts the current text item delimiters between each text item, miraculously giving you CRLF-terminated paragraphs.
The fifth line restores the text item delimiters to whatever they were before (you don't know what they were, but don't need to know what they were, as long as you restore the previous setting - it's unlikely you want CRLF moving forwards).
The rest of the script (lines 6 through 9) reopen the file you originally selected, sets the EOF to 0 (effectively wiping the file contents), then writes the CRLF-terminated text to the file and finally closes the file.
Note that some people might suggest using text item delimiters to break up the original text file on CRs but that would be wrong IMHO. The reason is that 'paragraphs of' can detect and handle both CR and CRLF-terminated paragraphs, leaving you with clean paragraphs into which you insert CRLFs.
This means that if the file originally had CRLF-terminated paragraphs you'd end up with the same data, but at least there was no harm done.
In contrast, if you simply searched for CRs and replaced them with CRLFs you could have the situation where you selected a CRLF-terminated file (maybe you didn't realize it was already in the Windows format) and your script would blindly replace each CR with CRLF, meaning you'd end up with CRLFLF combinations, which is very wrong.

How to send string with line feed to Agilent 33250A via COM1

Agilent 33250A is a function generator. In HPERTERMINAL, when "Send line ends with line feeds" is enabled, simple strings make it work well, such as: "APPLQU", "OUTPUT ON", etc...
But I can't make it work with .vi file. COM setting is correct because 33250A shows "remote" icon immediatly after string sent. It will respon "error" to any mismatched setting (e.g. 9600 vs 115200). So, the connection is there but it just doesn't respond to commands.
I don't know why. The termination character is enabled in .vi
I apprecite your help to make the .vi to send string just like the HYPERTERMINAL with 'line feeds'.
Thank you very much.
Jian
Attachments:
Serial_Communication.vi ‏40 KB
Write2COM1.vi ‏22 KB

From what I can see it looks like you are NOT specifying what termination character you want to use when you call the serial port init.
When not otherwise specified, the port will be configured to use the default termination character which is a "carrige return" HEX 0A.
Try wiring a "Line Feed" constant to the init VI.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Replace line feed with perl

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