Why executing a command suspends execution of all other workflows?

I created a workflow, which contains multiple workflows that are supposedly to run in parallel (no lines connecting them). Each sub workflow will eventually call some long running commands via exec(). In the run, I noticed that all sub workflows are started in parallel (good), but once one of the workflows calls a command via exec(), the execution of all other sub workflows are suspended until the command finishes. I thought that only the workflow that invokes exec() should be blocked and waiting for exec() to return, while all other workflows should continue processing. But in reality, this is not true. All long running commands are eventually executed one by one even though they belong to different workflows that are set to run in parallel. Why is that? Any way to get around this? I really don't want to use exec() flag 256, which makes the run asynchronous.
Thanks.

DI job server version is 11.7.3.0
OS info:
Linux 2.6.9-55.ELsmp #1 SMP Wed May 2 14:04:42 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
redhat-release: CentOS release 4.5 (Final)
Thanks.

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-- Standard awesome library
local gears = require("gears")
local awful = require("awful")
awful.rules = require("awful.rules")
require("awful.autofocus")
-- Widget and layout library
local wibox = require("wibox")
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local beautiful = require("beautiful")
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local naughty = require("naughty")
local menubar = require("menubar")
local vicious = require("vicious")
function fullscreens(c)
awful.client.floating.toggle(c)
if awful.client.floating.get(c) then
local clientX = screen[1].workarea.x
local clientY = screen[1].workarea.y
local clientWidth = 0
-- look at http://www.rpm.org/api/4.4.2.2/llimits_8h-source.html
local clientHeight = 2147483640
for s = 1, screen.count() do
clientHeight = math.min(clientHeight, screen[s].workarea.height)
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end
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else
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awful.rules.apply(c)
end
-- focus our client
client.focus = c
end
-- {{{ Error handling
-- Check if awesome encountered an error during startup and fell back to
-- another config (This code will only ever execute for the fallback config)
if awesome.startup_errors then
naughty.notify({ preset = naughty.config.presets.critical,
title = "Oops, there were errors during startup!",
text = awesome.startup_errors })
end
-- Handle runtime errors after startup
do
local in_error = false
awesome.connect_signal("debug::error", function (err)
-- Make sure we don't go into an endless error loop
if in_error then return end
in_error = true
naughty.notify({ preset = naughty.config.presets.critical,
title = "Oops, an error happened!",
text = err })
in_error = false
end)
end
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-- Themes define colours, icons, and wallpapers
-- beautiful.init("/home/kili/Repositories/awesome-themes/arch/theme.lua")
beautiful.init("/usr/share/awesome/themes/default/theme.lua")
-- This is used later as the default terminal and editor to run.
terminal = "urxvt"
editor = os.getenv("EDITOR") or "nano"
editor_cmd = terminal .. " -e " .. editor
-- Default modkey.
-- Usually, Mod4 is the key with a logo between Control and Alt.
-- If you do not like this or do not have such a key,
-- I suggest you to remap Mod4 to another key using xmodmap or other tools.
-- However, you can use another modifier like Mod1, but it may interact with others.
modkey = "Mod4"
-- Table of layouts to cover with awful.layout.inc, order matters.
layouts =
awful.layout.suit.tile,
awful.layout.suit.tile.left,
awful.layout.suit.tile.bottom,
awful.layout.suit.tile.top,
awful.layout.suit.floating,
awful.layout.suit.fair,
awful.layout.suit.fair.horizontal,
awful.layout.suit.spiral,
awful.layout.suit.spiral.dwindle,
awful.layout.suit.max,
awful.layout.suit.max.fullscreen,
awful.layout.suit.magnifier
-- {{{ Tags
-- Define a tag table which hold all screen tags.
tags = {}
for s = 1, screen.count() do
-- Each screen has its own tag table.
tags[s] = awful.tag({ 1, 2, 3, 4, 5}, s, layouts[1])
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-- {{{ Menu
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myawesomemenu = {
{ "manual", terminal .. " -e man awesome" },
{ "edit config", editor_cmd .. " " .. awesome.conffile },
{ "restart", awesome.restart },
{ "quit", awesome.quit }
mymainmenu = awful.menu({ items = { { "awesome", myawesomemenu, beautiful.awesome_icon },
{ "open terminal", terminal }
mylauncher = awful.widget.launcher({ image = beautiful.awesome_icon, menu = mymainmenu })
-- {{{ Wibox
-- Create a textclock widget
batwidget = wibox.widget.textbox()
vicious.register(batwidget, vicious.widgets.bat,
function(widget,args)
local formatstring = " Bat: "..args[1]..args[2] .."%".. " "..args[3] .. " "
if args[2] <= 25 and args[1] == "-" then
return "".. formatstring .. ""
end
return formatstring
end, 60, "BAT0")
netwidgetETH = wibox.widget.textbox()
netwidgetWIFI = wibox.widget.textbox()
vicious.register(netwidgetETH, vicious.widgets.net, ' eth0:${eth0 down_kb} ${eth0 up_kb}', 3)
vicious.register(netwidgetWIFI, vicious.widgets.net,' wlan0:${wlan0 down_kb} ${wlan0 up_kb}', 3)
menubar.utils.terminal = terminal
mytextclock = awful.widget.textclock()--{ align = "right" })
-- Create a systray
mysystray = wibox.widget.systray()
-- Create a wibox for each screen and add it
mywibox = {}
mypromptbox = {}
mylayoutbox = {}
mytaglist = {}
mytaglist.buttons = awful.util.table.join(
awful.button({ }, 1, awful.tag.viewonly),
awful.button({ modkey }, 1, awful.client.movetotag),
awful.button({ }, 3, awful.tag.viewtoggle),
awful.button({ modkey }, 3, awful.client.toggletag),
awful.button({ }, 4, function(t) awful.tag.viewnext(aweful.tag.getscreen(t)) end),
awful.button({ }, 5, function(t) awful.tag.viewprev(aweful.tag.getscreen(t)) end)
mytasklist = {}
mytasklist.buttons = awful.util.table.join(
awful.button({ }, 1, function (c)
if c == client.focus then
c.minimized = true
else
c.minimized = false
if not c:isvisible() then
awful.tag.viewonly(c:tags()[1])
end
-- This will also un-minimize
-- the client, if needed
client.focus = c
c:raise()
end
end),
awful.button({ }, 3, function ()
if instance then
instance:hide()
instance = nil
else
instance = awful.menu.clients({ width=250 })
end
end),
awful.button({ }, 4, function ()
awful.client.focus.byidx(1)
if client.focus then client.focus:raise() end
end),
awful.button({ }, 5, function ()
awful.client.focus.byidx(-1)
if client.focus then client.focus:raise() end
end))
for s = 1, screen.count() do
-- Create a promptbox for each screen
mypromptbox[s] = awful.widget.prompt()--{ layout = awful.widget.layout.horizontal.leftright })
-- Create an imagebox widget which will contains an icon indicating which layout we're using.
-- We need one layoutbox per screen.
mylayoutbox[s] = awful.widget.layoutbox(s)
mylayoutbox[s]:buttons(awful.util.table.join(
awful.button({ }, 1, function () awful.layout.inc(layouts, 1) end),
awful.button({ }, 3, function () awful.layout.inc(layouts, -1) end),
awful.button({ }, 4, function () awful.layout.inc(layouts, 1) end),
awful.button({ }, 5, function () awful.layout.inc(layouts, -1) end)))
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mytaglist[s] = awful.widget.taglist(s, awful.widget.taglist.filter.all, mytaglist.buttons)
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mytasklist[s] = awful.widget.tasklist(s, awful.widget.tasklist.filter.currenttags, mytasklist.buttons)
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mywibox[s] = awful.wibox({ position = "top", screen = s })
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local left_layout = wibox.layout.fixed.horizontal()
left_layout:add(mylauncher)
left_layout:add(mytaglist[s])
left_layout:add(mypromptbox[s])
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local right_layout = wibox.layout.fixed.horizontal()
if s == 1 then right_layout:add(wibox.widget.systray()) end
right_layout:add(netwidgetWIFI)
right_layout:add(netwidgetETH)
right_layout:add(batwidget)
right_layout:add(mytextclock)
right_layout:add(mylayoutbox[s])
-- Now bring it all together (with the tasklist in the middle)
local layout = wibox.layout.align.horizontal()
layout:set_left(left_layout)
layout:set_middle(mytasklist[s])
layout:set_right(right_layout)
mywibox[s]:set_widget(layout)
-- Add widgets to the wibox - order matters
--mywibox[s].widgets = {
-- mylauncher,
-- mytaglist[s],
-- mypromptbox[s],
--layout = awful.widget.layout.horizontal.leftright
-- mylayoutbox[s],
-- mytextclock,
-- batwidget,
-- netwidgetETH,
-- netwidgetWIFI,
-- s == 1 and mysystray or nil,
-- mytasklist[s],
-- layout = awful.widget.layout.horizontal.rightleft
end
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root.buttons(awful.util.table.join(
awful.button({ }, 3, function () mymainmenu:toggle() end),
awful.button({ }, 4, awful.tag.viewnext),
awful.button({ }, 5, awful.tag.viewprev)
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awful.key({ modkey, }, "Escape", awful.tag.history.restore),
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awful.client.focus.byidx(-1)
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awful.prompt.run({ prompt = "Run Lua code: " },
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-- Bind all key numbers to tags.
-- Be careful: we use keycodes to make it works on any keyboard layout.
-- This should map on the top row of your keyboard, usually 1 to 9.
for i = 1, keynumber do
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function ()
local screen = mouse.screen
if tags[screen][i] then
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function ()
local screen = mouse.screen
if tags[screen][i] then
awful.tag.viewtoggle(tags[screen][i])
end
end),
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function ()
if client.focus and tags[client.focus.screen][i] then
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end
end),
awful.key({ modkey, "Control", "Shift" }, "#" .. i + 9,
function ()
if client.focus and tags[client.focus.screen][i] then
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end
end))
end
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awful.button({ modkey }, 1, awful.mouse.client.move),
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root.keys(globalkeys)
-- Set Firefox to always map on tags number 2 of screen 1.
-- { rule = { class = "Firefox" },
-- properties = { tag = tags[1][2] } },
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if screen.count() > 1 then
awful.rules.rules = {
-- All clients will match this rule.
{ rule = { },
properties = { border_width = beautiful.border_width,
-- border_color = beautiful.border_normal,
focus = true,
keys = clientkeys,
buttons = clientbuttons } },
{ rule = { class = "MPlayer" },
properties = { floating = true } },
{ rule = { class = "gimp" },
properties = { floating = true } },
{ rule = { class = "Xdialog" },
properties = { floating = true } },
{ rule = { class = "Firefox" },
properties = { tag = tags[1][1] } },
{ rule = { name = "Thunderbird" },
properties = { tag = tags[1][2] } },
{ rule = { instance = "plugin-container" },
properties = { floating = true } },
{ rule = { class = "Luakit" },
properties = { floating = true } }
else
awful.rules.rules = {
-- All clients will match this rule.
{ rule = { },
properties = { border_width = beautiful.border_width,
-- border_color = beautiful.border_normal,
focus = true,
keys = clientkeys,
buttons = clientbuttons } },
{ rule = { class = "MPlayer" },
properties = { floating = true } },
{ rule = { class = "gimp" },
properties = { floating = true } },
{ rule = { class = "Firefox" },
properties = { tag = tags[1][2] } },
{ rule = { name = "Thunderbird" },
properties = { tag = tags[1][3] } },
{ rule = { instance = "plugin-container" },
properties = { floating = true, fullscreen = true } },
{ rule = { class = "Dolphin" },
properties = { floating = false, fullscreen = false, tag = tags[1][4] } },
{ rule = { class = "Luakit" },
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{ rule = { class = "Pidgin" },
properties = { tag = tags[1][5] } }
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-- Widgets that are aligned to the left
local left_layout = wibox.layout.fixed.horizontal()
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-- Widgets that are aligned to the right
local right_layout = wibox.layout.fixed.horizontal()
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right_layout:add(awful.titlebar.widget.maximizedbutton(c))
right_layout:add(awful.titlebar.widget.stickybutton(c))
right_layout:add(awful.titlebar.widget.ontopbutton(c))
right_layout:add(awful.titlebar.widget.closebutton(c))
-- The title goes in the middle
local title = awful.titlebar.widget.titlewidget(c)
title:buttons(awful.util.table.join(
awful.button({ }, 1, function()
client.focus = c
c:raise()
awful.mouse.client.move(c)
end),
awful.button({ }, 3, function()
client.focus = c
c:raise()
awful.mouse.client.resize(c)
end)
-- Now bring it all together
local layout = wibox.layout.align.horizontal()
layout:set_left(left_layout)
layout:set_right(right_layout)
layout:set_middle(title)
awful.titlebar(c):set_widget(layout)
end
end)
client.connect_signal("focus", function(c) c.border_color = beautiful.border_focus end)
client.connect_signal("unfocus", function(c) c.border_color = beautiful.border_normal end)
Here is also my slime config and my initrc
ls -lisa .xinitrc
3276814 4 -rwxr-xr-x ...
#!/bin/sh
xrdb -merge ~/.Xresources
wicd-client --tray &
exec awesome #>> ~/.cache/awesome/stdout 2>> ~/.cache/awesome/stderr
# Path, X server and arguments (if needed)
# Note: -xauth $authfile is automatically appended
default_path /bin:/usr/bin:/usr/local/bin
default_xserver /usr/bin/X
xserver_arguments -nolisten tcp vt07
# Commands for halt, login, etc.
halt_cmd /sbin/shutdown -h now
reboot_cmd /sbin/shutdown -r now
console_cmd /usr/bin/xterm -C -fg white -bg black +sb -T "Console login" -e /bin/sh -c "/bin/cat /etc/issue; exec /bin/login"
#suspend_cmd /usr/sbin/suspend
# Full path to the xauth binary
xauth_path /usr/bin/xauth
# Xauth file for server
authfile /var/run/slim.auth
# Activate numlock when slim starts. Valid values: on|off
numlock on
# Hide the mouse cursor (note: does not work with some WMs).
# Valid values: true|false
# hidecursor false
# This command is executed after a succesful login.
# you can place the %session and %theme variables
# to handle launching of specific commands in .xinitrc
# depending of chosen session and slim theme
# NOTE: if your system does not have bash you need
# to adjust the command according to your preferred shell,
# i.e. for freebsd use:
# login_cmd exec /bin/sh - ~/.xinitrc %session
login_cmd exec /bin/bash -login ~/.xinitrc %session
# Commands executed when starting and exiting a session.
# They can be used for registering a X11 session with
# sessreg. You can use the %user variable
# sessionstart_cmd some command
# sessionstop_cmd some command
# Start in daemon mode. Valid values: yes | no
# Note that this can be overriden by the command line
# options "-d" and "-nodaemon"
# daemon yes
# Available sessions (first one is the default).
# The current chosen session name is replaced in the login_cmd
# above, so your login command can handle different sessions.
# see the xinitrc.sample file shipped with slim sources
sessions awesome,xfce4,icewm-session,wmaker,blackbox
# Executed when pressing F11 (requires imagemagick)
screenshot_cmd import -window root /slim.png
# welcome message. Available variables: %host, %domain
welcome_msg Welcome to %host
# Session message. Prepended to the session name when pressing F1
# session_msg Session:
# shutdown / reboot messages
shutdown_msg The system is halting...
reboot_msg The system is rebooting...
# default user, leave blank or remove this line
# for avoid pre-loading the username.
default_user kili
# Focus the password field on start when default_user is set
# Set to "yes" to enable this feature
focus_password yes
# Automatically login the default user (without entering
# the password. Set to "yes" to enable this feature
#auto_login no
# current theme, use comma separated list to specify a set to
# randomly choose from
current_theme archlinux-simplyblack
# Lock file
lockfile /var/lock/slim.lock
# Log file
logfile /var/log/slim.log
Thanks in advance!
Edit:
Besides a lot of other errors the problem was the systray. It was created 2 times, now login works again. I figured that out via enabling logging for awesome in the xinitrc again.
Last edited by stubb (2013-01-08 23:20:05)

Hi,
I have the same kind of issue after updated slim from v1.3.4-4 to v1.3.5-1.
see my topic here :
https://bbs.archlinux.org/viewtopic.php?id=156792
Last edited by cedricl (2013-01-24 17:16:42)

How to execute sqlplus command in bat file ?

Hello
I have a simple script file that looks like this:
"sqlplus admin/admin as sysdba
shutdown immediate"
But.. when i start this file.bat my system logs but do not make any script. Sqlplus just waiting for command, and when i write "exit" i logout from sqlplus, and then system execute next command, that is "shutdown immediate" but beyond sqlplus (so my base is still working). Is it at all possible to log on and execute commands from file.bat or some other way ?
I'm using oracle 11g, windows 7x64
Regards and thx for help
Edited by: 879529 on 2011-11-27 04:52

969970 wrote:
Thank you that worked for me.But I fear you don't really understand WHY it worked, and WHY your first attempts did not work.
So let me explain
Given this .bat file
sqlplus / as sysdba
shutdown immediateWhat happens when you execute the file? The windows command processor reads the file line by line and processes the command on each line. What is the first lilne?
sqlplus / as sysdbaSo what would you expect to happen when Windows processes that line? Remember, it's exactly as if you had entered that command yourself at the command prompt .... Answer: The OS locates an executable file named 'sqlplus', loads it into memory and passes control to it, along with a pointer to the rest of the command line ('/ as sysdba'). At that point, the executable sqlplus has control and will do whatever it wants with the command line it was passed ('/ as sysdba') and then waits for user input for more commands, including an 'exit' command. Where are those commands going to come from? They are NOT going to come from the next line in the bat file. They can't. The command processor that is running the bat file is still waiting for sqlplus to finish and return control. So you are stuck. The only way out is to break out of sqlplus with a 'ctl-break'. Once that happens, the command processor moves on to the next line in the bat file:
shutdown immediateSo now the os tries to locate an executable file named 'shutdown' .... you probably don't have an executable by that name (let's hope not!) so you then get an error message from the OS informing you that
'shutdown' is not recognized as an internal or external command,
operable program or batch file.Now, if you were using a real OS, you could achieve what you wanted by using input redirection, but unfortunately, Windows just has a toy for a command processor.

Unable to execute Linux command from Java

Hi,
I am currently working on a code wherein i need to execute Linux command from Java. Below are some of the query i have.
1) Is there any efficient method of running OS commands from Java, rather than using Runtime and Process method.
2) Below is details of my code which fails in execution
**-- Java Version**
java version "1.6.0"
OpenJDK Runtime Environment (build 1.6.0-b09)
OpenJDK Server VM (build 1.6.0-b09, mixed mode)
-- Program Code ----
Where <path> = Path i put myself
package test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.*;
public class GetInode{
 * @param args
 public static void main(String[] args) {
 GetInode test = new GetInode();
 test.getInode();
 public void getInode(){
 String command = "/usr/bin/stat -Lt <path>;
 System.out.println(command);
 Process process;
 Runtime rt;
 try{
 rt = Runtime.getRuntime();
 process = rt.exec(command);
 InputStreamReader isr = new InputStreamReader(process.getErrorStream());
 BufferedReader bre = new BufferedReader(isr);
 BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream());
 System.out.println(bre.readLine());
System.out.println(br.readLine().split(" ")[7]);
 process.destroy();
 }catch (Exception ex){
 System.out.println("Error :- " + ex.getMessage());
------Output -------------
/usr/bin/stat -Lt "<path>"
/usr/bin/stat: cannot stat `"<path>"': No such file or directory
Error :- null
Can any one help me what is wrong and why i am unable to run the Linux command from Java.

For clarity purpose............i m submitting actual code here
--- Code ---
package test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.*;
public class GetInode{
* @param args
public static void main(String[] args) {
GetInode test = new GetInode();
test.getInode();
public void getInode(){
String command = "/usr/bin/stat -Lt \"/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt\"";
System.out.println(command);
Process process;
Runtime rt;
try{
rt = Runtime.getRuntime();
process = rt.exec(command);
InputStreamReader isr = new InputStreamReader(process.getErrorStream());
BufferedReader bre = new BufferedReader(isr);
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
System.out.println(bre.readLine());
System.out.println(br.readLine().split(" ")[7]);
process.destroy();
}catch (Exception ex){
System.out.println("Error :- " + ex.getMessage());
--- Output ---
[ratz]s0898671: java GetInode
/usr/bin/stat -Lt "/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt"
/usr/bin/stat: cannot stat `"/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt"': No such file or directory
Error :- null
-- Linux Terminal --
If i copy the first line from the output and execute on Linux terminal her is the output that i get
[ratz]s0898671: /usr/bin/stat -Lt "/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt"
/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt 12003 24 81a4 453166 10000 1c 360466554 2 0 1 1246638450 1246638450 1246638450 4096
Can you just assist me where am i really making mistake.......i was wondering if the command that i pass from Java....can be executed on Linux terminal why is it faling to run from java.........and when i print the Error Stream for process output........it show cannot Stat.......

Dtrace script to capture time spent executing shell commands

Hi all,
My 1st dtrace script to capture time spent by oracle executing various commands, is this correct? It seems to work...
#!/usr/bin/sh
/usr/sbin/dtrace -n '
#pragma D option quiet
#pragma D option switchrate=10
syscall::exec:entry, syscall::exece:entry
/uid == 900/
self->t = timestamp;
syscall::exec:return, syscall::exece:return
/uid == 900/
printf("%-20d %s\n", (timestamp - self->t), curpsinfo->pr_psargs);
thanks for any feedback.
Regards
Stuart

Hi Stuart -
Just to be clear, you wanted to know the time Oracle takes to exec() a command, or to actually run a short-lived process from start to finish? The script accomplishes the former, but I'm curious why you'd want that particular value.
Michael

Can't execute windows command in servlet with JDK1.5 and tomcat 5

Hi all,
I have a web application which uses a servlet to execute windows commands, such as "mkdir", "mv", and "rmdir". In my servlet, I use java Runtime() class to implement the execution.
Under jsdk1.4 and tomcat 4, it is fine for the servlet to execute those command. But uncer jdk1.5 and tomcat 5, it gives the following error:
error to execute a command: java.io.IOException: CreateProcess: mkdir c:\m7q28 error=2
java.io.IOException: CreateProcess: mkdir c:\m7q28 error=2
Please help me if you have any idea. Thanks.

And be sure to read this:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

Executing multiple commands with sudo fails

Hi,
We're having trouble with sudo and bash. When we want to execute multiple commands and there are spaces, the commands don't run. Here's an example of what works:
[root@erpapp1-prod ~]# sudo -i -u oracle bash -c 'ls;pwd'
In this case, I get a listing of the files in /home/oracle followed by the current directory of /home/oracle.
Here's an example of what DOESN'T work:
[root@erpapp1-prod ~]# sudo -i -u oracle bash -c 'ls; pwd'
Notice the space before "pwd". In this case, all I get is the listing of files in /home/oracle.
Caveat: I'm a real beginner with Linux. I've compared many of the files (/home/oracle/.bash_profile, /home/oracle/.bashrc, /etc/bashrc, /etc/profile) from this server to another where we don't have issues and, other than some logic being in different order, don't see much of a difference. Again, very beginner here.
Any ideas? Thanks!
Todd

What shows up as a space may not necessarily be a space. For instance, it could be some control character like a newline, which might interfere with the execution. For example:
$ test=`echo -e "test;\ntest"`
$ echo $test
test; test
$ echo "$test"
test;
test
Here is another example:
# test=`echo -e "ls;\npwd"`
# su - oracle -c "$test"
oradiag_oracle
/home/oracle
# su - oracle -c $test
oradiag_oracle
I cannot guess how you construct the command list. Perhaps the problem is a text files that was created under Windows and copied as binary to Linux, or a shell script using a different IFS environment variable, etc.
Personally I would use a different approach. From a security standpoint it is a bad idea to use passwords at the command prompt because every user can see them using the ps -ef output.

Executing two commands at the same time from Runtime.getRuntime

Hi everybody,
I m executing a command of imageMagic from javacode to crop and for changing the quality of image.The code is as below :
String changeQuality = new String("convert " + originalImage
                    + " -crop " + imageWidth + "x" + imageHeight + "+" + imageX
                    + "+" + imageY + " -quality " + quality + " " + finalImage);
               Runtime.getRuntime().exec(changeQuality);
But before going to next page of jsp I want the size of the finalImage. So I m calling a new function from the base file, from which i m calling the above function, for getting the size of image:
public String getSize(String finalImage) {
               proc = Runtime.getRuntime().exec("identify " + finalImage);
As identify cmd gives the size and various values of image but this command is showing the size zero. and if try to read the file then it shows FileNotFoundException.It means the file is not on the server.
What should i do to execute both the command and getting the right result.
Any help is appreciated.
Thanks in advance.
Vivek Kumar Gupta

Hi everyone,
Nobody ans my question but finally i got the ans of my question.
I use a input stream for reading the first one imagemagic command. through this the second command execute after the first command finished its execution.
And my images are now displaying without error.
I know now you all are thinking how great mind I am!!! hai na
Hmm woh to main hoon.
post a question if u have over here. Perhaps i can solve your prob.

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