Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Capture output of command triggered in background

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Capture output of command triggered in background
Prev   Next
# 1  
Old 08-06-2013
Capture output of command triggered in background
Is there any way to trigger a sequence of commands in parallel and capture their output in variables? e.g. something on the following lines

Code:
x=`echo "X" &`
y=`echo "Y" &`
z=`echo "Z" &`

so that $x, $y, and $z evaluate to X, Y and Z res.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

Python Paramiko multi threading to capture all output for command applied in loop

My issue : I am getting only last command output data in ouput file. Though comamnd "print(output)" displays data for all 3rd column values but the data saved in file is not what required it hs to be the same which is being printed by command"print(output)". Could you please help me to fix this,... (0 Replies)
Discussion started by: as7951
0 Replies

2. HP-UX

How capture all user command line output?

Hi I want to know how capture all user command line output and save this commands and outputs to text files? if you have script for this subject please give me.:o please help me thank you (6 Replies)
Discussion started by: amvhd
6 Replies

3. Shell Programming and Scripting

Expect command when triggered by launchd

Hi folks, Im having trouble with an expect command in a shell script I use to back up mac os x servers. This one is being run on a 10.8.2 Server as part of a larger bash script. The script executes perfectly all the way through when triggered on the command line, but when launchd triggers it at... (4 Replies)
Discussion started by: rowie718
4 Replies

4. Solaris

How to capture Output of truus command

Hi I want to check if some process is sleeping. I can see that in truss -p <pid> I want to capture output and check that output if proces sis sleeping. Please suggest way to capture output of truss command or other way to check if process is sleeping (1 Reply)
Discussion started by: ankush_mehra
1 Replies

5. Shell Programming and Scripting

Log Capture for Background Process

Hi , I am running a backgorund process called hello.sh ./hello & Now i need to capture the log file as it produces the output . i am not able to use " >> " nor " tee " to capture the output file / log file . Please let me know how can i do it ? Regards, Deepak Konnur (3 Replies)
Discussion started by: dskonnur
3 Replies

6. Shell Programming and Scripting

Enter the command to capture output--help

&& echo "PLEASE enter the command to capture output" || echo "Processing your command manual" x=$# echo $x while do while man $@ | read -r line do >$@.txt ... (1 Reply)
Discussion started by: rrd1986
1 Replies

7. Solaris

How to capture only some part of output when command executed??

Hi, When I execute this command prtdiag -v output sample : System clock frequency: 160 MHZ Memory size: 4GB ==================================== CPUs ==================================== E$ CPU CPU CPU Freq Size ... (4 Replies)
Discussion started by: vijaysachin
4 Replies

8. Shell Programming and Scripting

How do I capture multiple lines of the status output of a command?

I need to know what the upload speed of an Internet connection. I thought the easiest way to do this would be to transfer a file via FTP to my server using the command: sh-3.2$ ftp -u ftp://username:password@computerdomain/directory/ file_to_be_uploaded Note: My environment allows me to issue... (2 Replies)
Discussion started by: zzz1528
2 Replies

9. Shell Programming and Scripting

[csh] How to capture output from a command and pass it on to a variable?

Hi there! I'm trying to write a script that will capture output from a command and assign it to a variable. Let's say, for example, I'd like to catch from inside the script whatever the following command outputs: ls *.aaa and put it into a variable "listoffiles". What I tried was: set... (3 Replies)
Discussion started by: machinogodzilla
3 Replies

10. Solaris

how to capture oracle export log while running as background process

I ran the Oracle 9i export command from a terminal to export out a big table using "exp andrew/password file=andrew.dmp log=andrew.log" From the terminal I can see that the export is running as there is some output from the oracle export job. The export job is not complete yet. When i go check... (4 Replies)
Discussion started by: hippo2020
4 Replies
Login or Register to Ask a Question

LEARN ABOUT MOJAVE

screencapture

SCREENCAPTURE(1)					    BSD General Commands Manual 					  SCREENCAPTURE(1)

NAME

     screencapture -- capture images from the screen and save them to a file or the clipboard

SYNOPSIS

     screencapture [-SWCTMPcimswxto] file

DESCRIPTION

     The screencapture utility is not very well documented to date.  A list of options follows.

     -c      Force screen capture to go to the clipboard.

     -b      Capture Touch Bar, only works in non-interactive modes.

     -C      Capture the cursor as well as the screen.	Only allowed in non-interactive modes.

     -d      Display errors to the user graphically.

     -i      Capture screen interactively, by selection or window.  The control key will cause the screen shot to go to the clipboard.	The space
	     key will toggle between mouse selection and window selection modes.  The escape key will cancel the interactive screen shot.

     -m      Only capture the main monitor, undefined if -i is set.

     -D      <display> Screen capture or record from the display specified. 1 is main, 2 secondary, etc

     -o      In window capture mode, do not capture the shadow of the window.

     -p      Screen capture will use the default settings for capture. The files argument will be ignored.

     -M      Open the taken picture in a new Mail message.

     -P      Open the taken picture in a Preview window or QuickTime Player if video.

     -I      Open the taken picture in Mesages.

     -B      <bundleid> Open in the app matching bundleid.

     -s      Only allow mouse selection mode.

     -S      In window capture mode, capture the screen instead of the window.

     -J      <style> Sets the starting style of interfactive capture "selection","window","video".

     -t      <format> Image format to create, default is png (other options include pdf, jpg, tiff and other formats).

     -T      <seconds> Take the picture after a delay of <seconds>, default is 5.

     -w      Only allow window selection mode.

     -W      Start interaction in window selection mode.

     -x      Do not play sounds.

     -a      Do not capture attached windows.

     -r      Do not add screen dpi meta data to captured file.

     -l      <windowid> Captures the window with windowid.

     -R      <rectangle> Capture rectangle using format x,y,width,height.

     -v      Capture video recording of the screen.

     -V      <seconds> Capture video recording of the screen for the specified seconds.

     -A      <id> Captures audio during a video recording using default input. Optionally pass id of the audio source.

     -k      Show clicks in video recordings.

     -U      Show interactive toolbar in interactive mode.

     -u      Present UI after screencapture is complete. Files passed to commandline will be ignored.

     files   where to save the screen capture, 1 file per screen

BUGS

     Better documentation is needed for this utility.

SECURITY CONSIDERATIONS

     To capture screen content while logged in via ssh, you must launch screencapture in the same mach bootstrap hierarchy as loginwindow:

     PID=pid of loginwindow
     sudo launchctl bsexec $PID screencapture [options]

HISTORY

     A screencapture utility first appeared in Mac OS X v10.2.

Mac OS								   June 16, 2004							    Mac OS