How to redirect output of an OS command to a stream???

how can i redirect the output of an OS command (such as 'ls' in linux or 'dir' in windows) to a io stream???
....for example, assume i'm having a textbox and a button...when i click the button , i need the output of 'ls' to be in the textbox....i think execution of the command could be accomplished by Runtime's exec() ...but how to redirect outputs???

You should find what you are looking for here:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

Similar Messages

Redirecting output after a "cat" command

I first encountered this with "do shell script" in AS, and the issue also occurs in Terminal.
Basically, I want to get contents from a file, make some changes via "sed ," and return the changed version to the same file -- but the file always winds up empty. Without the redirect, the commands work as expected.
For example, in Terminal:
cat --path to some file-- | sed 's/this/that/g'
results in the expected changes (returned to Terminal)
but
cat --path to some file-- | sed 's/this/that/g' > path to some (same) file
results in a blank file
(The "sed" command isn't even necessary for this to happen; just trying to return the output of the "cat" command to the file results in a blank file.)
I've certainly been able to accomplish this sort of thing with commands other than "cat." Is this something that's not possible with "cat" or do I have the syntax wrong?
(Of course, I can get around this by following up with an "echo" command but, in "do shell script," that requires more code.)
Thanks in advance for your comments.

HI osimp,
   I've always thought that the "sed 's/this/that/g' < input > output" syntax looked cool because you can sort of see the flow of information. However, the end of the command is simply a pair of redirect directives. The first tells the shell to open the file and pipe the contents into the standard input stream of sed. Then the output of sed is piped into the output file.
   The command I was proposing, "sed 's/this/that/g' input > output", is simpler in that it tells sed to read the file directly rather than asking the shell to read it.
   You said above that you were interested in storing the result in a variable. That could be done simply with a command like:
OUTPUT=$( sed 's/this/that/g' input )
For many types of content this would work nicely but the shell will try to expand the output so plenty of things can cause errors. I was going to wait to post the above until I discovered a way around that expansion but I haven't had enough time to do that so I'm posting it and I'll see if I can improve it later.
   I know some about AppleScript and have written several scripts that combine capabilities of the shell with those of AppleScript. There are probably more people here that know AppleScript here than there are shell scripters on the AppleScript Discussion. You should try posting the whole question over here as well as over there. However, try and see if you can get the help of Deivy over there. He knows a lot about interactions between AppleScript and the shell.
Gary
~~~~
   A memorandum is written not to inform the reader,
   but to protect the writer.
         -- Dean Acheson

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I've Googled this, and looked around in the tutorials, but I haven't found a simple example of how to assign an output to a byte array. Maybe I'm just too much of a newbie to know how to navigate the documentation, but...
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Thanks, That works fine!
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How to redirect standard output/error of a ucb function to matrixx command window

Is there a way to redirect standard output/error of a ucb function to matrixx command window?
I know that the recommended way is to use stdwrt or XmathDisplay commands. However, we have some
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Thanks

Hi,
What you need to do is create a printf function that will print the information into a string, then you can use stdwrt to display it in Xmath.
Then you tell the UCB linking process to compile and link with this version of printf.c
I am including the printf.c that we used to test the function you needed.
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Attachments:
printf.c ‏1 KB

How to redirect CELLCLI output to text file

Hi,
I would like to redicrect the output of the cellcli command to a text file .
For example , how to redirect the output of this command to a text file on /tmp
CellCLI> list metrichistory where objectType = 'CELL' -
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cellcli has spooling capabilities similar to sqlplus:
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Options:
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    [CREATE]: If the filename already exists, an error is reported.
    [REPLACE]: If the filename already exists, the contents will be
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Examples:
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    spool myfile append
    spool off
    spoolBut if you are trying to script it, it would be easier to just run it command line:
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In startup.bat we've changed string
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How to pause output in command prompt

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{content}
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{content}
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import java.io.*;
public class HostID
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Urgent ...how to send output of sap through mail

Could you please guide me how to send output of SAP Script through mail in PDF format.
Thanks in Advance....
Regards,
Kumar.

*& Report ZSPOOLTOPDF                                                 *
*& Converts spool request into PDF document and emails it to           *
*& recipicant.                                                         *
*& Execution                                                           *
*& This program must be run as a background job in-order for the write *
*& commands to create a Spool request rather than be displayed on      *
*& screen                                                              *
REPORT zspooltopdf.
PARAMETER: p_email1 LIKE somlreci1-receiver,
           p_sender LIKE somlreci1-receiver,
               p_delspl AS CHECKBOX.
*DATA DECLARATION
DATA: gd_recsize TYPE i.
Spool IDs
TYPES: BEGIN OF t_tbtcp.
        INCLUDE STRUCTURE tbtcp.
TYPES: END OF t_tbtcp.
DATA: it_tbtcp TYPE STANDARD TABLE OF t_tbtcp INITIAL SIZE 0,
      wa_tbtcp TYPE t_tbtcp.
Job Runtime Parameters
DATA: gd_eventid LIKE tbtcm-eventid,
      gd_eventparm LIKE tbtcm-eventparm,
      gd_external_program_active LIKE tbtcm-xpgactive,
      gd_jobcount LIKE tbtcm-jobcount,
      gd_jobname LIKE tbtcm-jobname,
      gd_stepcount LIKE tbtcm-stepcount,
      gd_error    TYPE sy-subrc,
      gd_reciever TYPE sy-subrc.
DATA: w_recsize TYPE i.
DATA: gd_subject   LIKE sodocchgi1-obj_descr,
      it_mess_bod LIKE solisti1 OCCURS 0 WITH HEADER LINE,
      it_mess_att LIKE solisti1 OCCURS 0 WITH HEADER LINE,
      gd_sender_type     LIKE soextreci1-adr_typ,
      gd_attachment_desc TYPE so_obj_nam,
      gd_attachment_name TYPE so_obj_des.
Spool to PDF conversions
DATA: gd_spool_nr LIKE tsp01-rqident,
      gd_destination LIKE rlgrap-filename,
      gd_bytecount LIKE tst01-dsize,
      gd_buffer TYPE string.
Binary store for PDF
DATA: BEGIN OF it_pdf_output OCCURS 0.
        INCLUDE STRUCTURE tline.
DATA: END OF it_pdf_output.
CONSTANTS: c_dev LIKE sy-sysid VALUE 'DEV',
           c_no(1)     TYPE c   VALUE ' ',
           c_device(4) TYPE c   VALUE 'LOCL'.
*START-OF-SELECTION.
START-OF-SELECTION.
Write statement to represent report output. Spool request is created
if write statement is executed in background. This could also be an
ALV grid which would be converted to PDF without any extra effort
WRITE 'Hello World'.
new-page.
commit work.
new-page print off.
IF sy-batch EQ 'X'.
    PERFORM get_job_details.
    PERFORM obtain_spool_id.
Alternative way could be to submit another program and store spool
id into memory, will be stored in sy-spono.
*submit ZSPOOLTOPDF2
       to sap-spool
       spool parameters   %_print
       archive parameters %_print
       without spool dynpro
       and return.
Get spool id from program called above
IMPORT w_spool_nr FROM MEMORY ID 'SPOOLTOPDF'.
    PERFORM convert_spool_to_pdf.
    PERFORM process_email.
    if p_delspl EQ 'X'.
      PERFORM delete_spool.
    endif.
    IF sy-sysid = c_dev.
      wait up to 5 seconds.
      SUBMIT rsconn01 WITH mode   = 'INT'
                      WITH output = 'X'
                      AND RETURN.
    ENDIF.
ELSE.
    SKIP.
    WRITE:/ 'Program must be executed in background in-order for spool',
            'request to be created.'.
ENDIF.
      FORM obtain_spool_id                                          *
FORM obtain_spool_id.
CHECK NOT ( gd_jobname IS INITIAL ).
CHECK NOT ( gd_jobcount IS INITIAL ).
SELECT * FROM tbtcp
                 INTO TABLE it_tbtcp
                 WHERE      jobname     = gd_jobname
                 AND        jobcount    = gd_jobcount
                 AND        stepcount   = gd_stepcount
                 AND        listident   <> '0000000000'
                 ORDER BY   jobname
                            jobcount
                            stepcount.
READ TABLE it_tbtcp INTO wa_tbtcp INDEX 1.
IF sy-subrc = 0.
    message s004(zdd) with gd_spool_nr.
    gd_spool_nr = wa_tbtcp-listident.
    MESSAGE s004(zdd) WITH gd_spool_nr.
ELSE.
    MESSAGE s005(zdd).
ENDIF.
ENDFORM.
      FORM get_job_details                                          *
FORM get_job_details.
Get current job details
CALL FUNCTION 'GET_JOB_RUNTIME_INFO'
       IMPORTING
            eventid                 = gd_eventid
            eventparm               = gd_eventparm
            external_program_active = gd_external_program_active
            jobcount                = gd_jobcount
            jobname                 = gd_jobname
            stepcount               = gd_stepcount
       EXCEPTIONS
            no_runtime_info         = 1
            OTHERS                  = 2.
ENDFORM.
      FORM convert_spool_to_pdf                                     *
FORM convert_spool_to_pdf.
CALL FUNCTION 'CONVERT_ABAPSPOOLJOB_2_PDF'
       EXPORTING
            src_spoolid              = gd_spool_nr
            no_dialog                = c_no
            dst_device               = c_device
       IMPORTING
            pdf_bytecount            = gd_bytecount
       TABLES
            pdf                      = it_pdf_output
       EXCEPTIONS
            err_no_abap_spooljob     = 1
            err_no_spooljob          = 2
            err_no_permission        = 3
            err_conv_not_possible    = 4
            err_bad_destdevice       = 5
            user_cancelled           = 6
            err_spoolerror           = 7
            err_temseerror           = 8
            err_btcjob_open_failed   = 9
            err_btcjob_submit_failed = 10
            err_btcjob_close_failed = 11
            OTHERS                   = 12.
CHECK sy-subrc = 0.
Transfer the 132-long strings to 255-long strings
LOOP AT it_pdf_output.
    TRANSLATE it_pdf_output USING ' ~'.
    CONCATENATE gd_buffer it_pdf_output INTO gd_buffer.
ENDLOOP.
TRANSLATE gd_buffer USING '~ '.
DO.
    it_mess_att = gd_buffer.
    APPEND it_mess_att.
    SHIFT gd_buffer LEFT BY 255 PLACES.
    IF gd_buffer IS INITIAL.
      EXIT.
    ENDIF.
ENDDO.
ENDFORM.
      FORM process_email                                            *
FORM process_email.
DESCRIBE TABLE it_mess_att LINES gd_recsize.
CHECK gd_recsize > 0.
PERFORM send_email USING p_email1.
perform send_email using p_email2.
ENDFORM.
      FORM send_email                                               *
--> p_email                                                       *
FORM send_email USING p_email.
CHECK NOT ( p_email IS INITIAL ).
REFRESH it_mess_bod.
Default subject matter
gd_subject         = 'Subject'.
gd_attachment_desc = 'Attachname'.
CONCATENATE 'attach_name' ' ' INTO gd_attachment_name.
it_mess_bod        = 'Message Body text, line 1'.
APPEND it_mess_bod.
it_mess_bod        = 'Message Body text, line 2...'.
APPEND it_mess_bod.
If no sender specified - default blank
IF p_sender EQ space.
    gd_sender_type = space.
ELSE.
    gd_sender_type = 'INT'.
ENDIF.
Send file by email as .xls speadsheet
PERFORM send_file_as_email_attachment
                               tables it_mess_bod
                                      it_mess_att
                                using p_email
                                      'Example .xls documnet attachment'
                                      'PDF'
                                      gd_attachment_name
                                      gd_attachment_desc
                                      p_sender
                                      gd_sender_type
                             changing gd_error
                                      gd_reciever.
ENDFORM.
      FORM delete_spool                                             *
FORM delete_spool.
DATA: ld_spool_nr TYPE tsp01_sp0r-rqid_char.
ld_spool_nr = gd_spool_nr.
CHECK p_delspl <> c_no.
CALL FUNCTION 'RSPO_R_RDELETE_SPOOLREQ'
       EXPORTING
            spoolid = ld_spool_nr.
ENDFORM.
*&      Form SEND_FILE_AS_EMAIL_ATTACHMENT
      Send email
FORM send_file_as_email_attachment tables it_message
                                          it_attach
                                    using p_email
                                          p_mtitle
                                          p_format
                                          p_filename
                                          p_attdescription
                                          p_sender_address
                                          p_sender_addres_type
                                 changing p_error
                                          p_reciever.
DATA: ld_error    TYPE sy-subrc,
        ld_reciever TYPE sy-subrc,
        ld_mtitle LIKE sodocchgi1-obj_descr,
        ld_email LIKE somlreci1-receiver,
        ld_format TYPE so_obj_tp ,
        ld_attdescription TYPE so_obj_nam ,
        ld_attfilename TYPE so_obj_des ,
        ld_sender_address LIKE soextreci1-receiver,
        ld_sender_address_type LIKE soextreci1-adr_typ,
        ld_receiver LIKE sy-subrc.
data:   t_packing_list like sopcklsti1 occurs 0 with header line,
        t_contents like solisti1 occurs 0 with header line,
        t_receivers like somlreci1 occurs 0 with header line,
        t_attachment like solisti1 occurs 0 with header line,
        t_object_header like solisti1 occurs 0 with header line,
        w_cnt type i,
        w_sent_all(1) type c,
        w_doc_data like sodocchgi1.
ld_email   = p_email.
ld_mtitle = p_mtitle.
ld_format              = p_format.
ld_attdescription      = p_attdescription.
ld_attfilename         = p_filename.
ld_sender_address      = p_sender_address.
ld_sender_address_type = p_sender_addres_type.
Fill the document data.
w_doc_data-doc_size = 1.
Populate the subject/generic message attributes
w_doc_data-obj_langu = sy-langu.
w_doc_data-obj_name = 'SAPRPT'.
w_doc_data-obj_descr = ld_mtitle .
w_doc_data-sensitivty = 'F'.
Fill the document data and get size of attachment
CLEAR w_doc_data.
READ TABLE it_attach INDEX w_cnt.
w_doc_data-doc_size =
     ( w_cnt - 1 ) * 255 + STRLEN( it_attach ).
w_doc_data-obj_langu = sy-langu.
w_doc_data-obj_name   = 'SAPRPT'.
w_doc_data-obj_descr = ld_mtitle.
w_doc_data-sensitivty = 'F'.
CLEAR t_attachment.
REFRESH t_attachment.
t_attachment[] = it_attach[].
Describe the body of the message
CLEAR t_packing_list.
REFRESH t_packing_list.
t_packing_list-transf_bin = space.
t_packing_list-head_start = 1.
t_packing_list-head_num = 0.
t_packing_list-body_start = 1.
DESCRIBE TABLE it_message LINES t_packing_list-body_num.
t_packing_list-doc_type = 'RAW'.
APPEND t_packing_list.
Create attachment notification
t_packing_list-transf_bin = 'X'.
t_packing_list-head_start = 1.
t_packing_list-head_num   = 1.
t_packing_list-body_start = 1.
DESCRIBE TABLE t_attachment LINES t_packing_list-body_num.
t_packing_list-doc_type   = ld_format.
t_packing_list-obj_descr = ld_attdescription.
t_packing_list-obj_name   = ld_attfilename.
t_packing_list-doc_size   = t_packing_list-body_num * 255.
APPEND t_packing_list.
Add the recipients email address
CLEAR t_receivers.
REFRESH t_receivers.
t_receivers-receiver = ld_email.
t_receivers-rec_type = 'U'.
t_receivers-com_type = 'INT'.
t_receivers-notif_del = 'X'.
t_receivers-notif_ndel = 'X'.
APPEND t_receivers.
CALL FUNCTION 'SO_DOCUMENT_SEND_API1'
       EXPORTING
            document_data              = w_doc_data
            put_in_outbox              = 'X'
            sender_address             = ld_sender_address
            sender_address_type        = ld_sender_address_type
            commit_work                = 'X'
       IMPORTING
            sent_to_all                = w_sent_all
       TABLES
            packing_list               = t_packing_list
            contents_bin               = t_attachment
            contents_txt               = it_message
            receivers                  = t_receivers
       EXCEPTIONS
            too_many_receivers         = 1
            document_not_sent          = 2
            document_type_not_exist    = 3
            operation_no_authorization = 4
            parameter_error            = 5
            x_error                    = 6
            enqueue_error              = 7
            OTHERS                     = 8.
Populate zerror return code
ld_error = sy-subrc.
Populate zreceiver return code
LOOP AT t_receivers.
    ld_receiver = t_receivers-retrn_code.
ENDLOOP.
ENDFORM.
regards,
venkat

How to add simple path in exec command??

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My code for java on linux is
Runtime r4=Runtime.getRuntime();
                                   Process p4=null;
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user.home      User's home directory
user.dir      User's current working directory

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rgrds

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hi experts
Can you help with some problems please?
1.) I try to run shell script from dbms_scheduler, which runs sqlplus and the output of sqlplus commands is written to file using command spool. To this point everything is running ok.
My problem is, that output of this file is: (e.g.)
SQL> PROMPT ****************USERB******************
****************USERB******************
SQL> --SELECT sid
SQL> -- FROM v
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But I don't want the whole first line in the output file. I only want the output of this command, like on the second line.
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Like in first issue described above. The main sqlplus create a job and this execute the background sqlplus using shell script. But both, the main and the background sqlplus are written to output file at the same time. But only one is written into. But I want the both outputs in the file.
How Can I do that, if I can?
Thanks a lot.

user9357436 wrote:
hi experts
Can you help with some problems please?
1.) I try to run shell script from dbms_scheduler, which runs sqlplus and the output of sqlplus commands is written to file using command spool. To this point everything is running ok. then why are you here?
My problem is, that output of this file is: (e.g.)
SQL> PROMPT ****************USERB******************
****************USERB******************so remove PROMPT line from the file
>
SQL> --SELECT sid
SQL> -- FROM v
SQL> -- WHERE audsid = SYS_CONTEXT('userenv','sessionid');
But I don't want the whole first line in the output file. I only want the output of this command, like on the second line.
2.) How Can I write two outputs from sqlplus using command spool running at the same time into one file?you can not do so.
Like in first issue described above. The main sqlplus create a job and this execute the background sqlplus using shell script. But both, the main and the background sqlplus are written to output file at the same time. But only one is written into. But I want the both outputs in the file.
How Can I do that, if I can?Can't.
Now what?
>
Thanks a lot.Why using DBMS_SCHEDULER to invoke OS script to run sqlplus that runs SQL statements?
this is like making THREE Left Turns, instead of single Right Turn.
Just invoke PL/SQL procedure that does what needs to be done.

How to redirect output of an OS command to a stream???

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