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1answer
118 views

How to run “&” operation sequentially

From my script I am running following commands: SCRIPT_1="ksh -x script1.sh & ksh -x script2.sh"; SCRIPT_2="ksh -x script3.sh & ksh -x script4.sh"; eval $SCRIPT_1; sleep 20s; eval ...
1
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2answers
143 views

Store stdout in variable and send command to background

I have a command in a bash script which I want to capture the output of and then send it to the background. How do I get this done? The following doesn't seem to work (it keeps blocking and outputs ...
1
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1answer
124 views

getting pid of two last commands executed in background and do stuff

I wrote this bash: #!/bin/bash eval "(a command) &" pid1=$! eval "(while kill -0 $pid1; do .... ; done) &" #It creates file.txt after few seconds pid2=$! if [ -s ...
1
vote
1answer
181 views

spawning multiple Background processes

I have a file which has 2,000,000 lines in it. I am running some commands for each line. I was trying to achieve some parallelism using GNU-parallel and swift as discussed here. However, I got an ...
1
vote
1answer
190 views

How to ensure a process has started reading a file before continuing?

I'm trying to write a command to test that data is written to a file. My first approach was: Start reading in the background. Write some data to the file. Wait for the reader to find a result. ...
1
vote
2answers
979 views

run a remote process via autossh in background

In Ubuntu I'm trying to run the geany editor on my local X display via the command: autossh -o StrictHostKeyChecking=false -XCg me@otherDYNDNShost geany & Trouble is, after the first ...
1
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2answers
540 views

is it possible to run job in foreground after user logout

I have some job to run which need be attached to terminal (or in foreground). The job is run in remote servers, and needs keep running after the users logout. I am aware of vnc server, however, I want ...
1
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2answers
142 views

Call background process back to stdout

Is it possible to "call" a background process output to be shown in the terminal? Example: cron starts apt-get to update the system and I want to see the output of apt-get
1
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1answer
242 views

Application in terminal still running but not directly accessible [duplicate]

Possible Duplicate: How to suspend and bring a background process to foreground I have kind of an odd problem which I haven't encountered before. Here's what I did: I started an ...
0
votes
4answers
10k views

Opening Firefox from terminal [duplicate]

When I type firefox in terminal, it starts Firefox but the terminal "hangs". What is happening behind the scenes? Can I open Firefox from terminal and keep on using the same terminal tab for other ...
0
votes
1answer
36 views

What does “wd” mean?

What does "wd" mean in the following output of an emacs background job? $jobs [3]- Stopped emacs -nw new\ file (wd: ~/dirlinks/cs/computer_system/composition/hardware)
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votes
4answers
7k views

Can't set background wallpaper in Gnome 3

I am using Debian Testing and Gnome Flashback (but it behaves the same in standard Gnome Shell). It gives me plain white background, and I can't set my own. Also, the settings dialog for background ...
0
votes
2answers
107 views

how to run rm in background in terminal

I have the following command to delete files in a folder that are 15 days or older: find /var/www/App/app/var/sessions* -mtime +15 -exec rm {} \; what is the best way to speed this up and run it ...
0
votes
1answer
46 views

Background a process and execute something with one command

Probably it would be easier to do just with a script, but I wonder why can't I do that with one command. What I have tried so far: $ (ls >/dev/null &) && echo $! 3135 $ (ls ...
0
votes
2answers
50 views

How to launch «gdbserver» in background?

I am communicating with a device via a serial port, and for I am launched «gdbserver» (like gdbserver :2345 myapp) it completely blocks the terminal. Neither an ampersand & symbol, nor ^z ...
0
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4answers
829 views

How to get process id of a command

We are running some command in batch mode. We need to do some more tasks once the existing command is done, so we need to wait until this command is done. For example: bsub -q gui -I calibre -drc ...
0
votes
1answer
98 views

why there is random behaviuor for a background job?

going through advanced bash scripting guide example 3.3 running a loop in background, i found this : #!/bin/bash # background-loop.sh for i in 1 2 3 4 5 6 7 8 9 10 # First loop. do echo -n "$i " done ...
0
votes
1answer
19 views

How to tell the memory usage of each background job

I am working on SGE, and I am logged on to it. I use qlogin -l mf=30G so as to get onto one compute node. I am running 2 jobs on this compute node in the background. [1] 4408 Running ...
0
votes
1answer
70 views

How to know, when a shell command running in the backround getting killed or died

I am running a shell command which is invoking an avconv session. The command is running as a background process. When the script starts executing I am doing a curl post to a url with the created ...
0
votes
1answer
50 views

Interactive shell in background inside another shell script

I have some problems when trying to run an interactive sh session inside a shell script. The inner sh process uses all the CPU and never terminates. To reproduce the issue simply create a file named ...
0
votes
1answer
53 views

Background Process not running?

I ran a C program with an infinite while loop in a terminal and observed one of the CPU cores shot to 100% usage. When I turn it into a background process using Ctrl+z, the CPU usage suddenly dipped ...
0
votes
1answer
100 views

Background Tasks on Multicore machine?

Say I have a dual core cpu running linux. If I start two single threaded processes (nodejs) in the background, how are they scheduled? Can I assume that the OS will as best as it can, attempt to ...
0
votes
1answer
540 views

Enter process running in background/bring to foreground [duplicate]

Possible Duplicate: How can I disown it a running process and associate it to a new screen shell? I started a java client using nohup to get it to run in the background (needed to log out ...
0
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0answers
15 views

How to run ping in background, disconnect from current terminal session and get back the ping process later on from new terminal session? [duplicate]

I want to monitor 2 of edge routers that currently have intermittent issue. I want to monitor their percentage availability using default ping parameter (1 ping per 1 second). If I run the ping ...
0
votes
2answers
70 views

Creating background process and communicating with it

1st thing off, I am really a Linux newbie - knowing just some basics; there's a great chance I didn't know what I need to look for, please redirect me if you know a good source. What I'm trying to do ...
0
votes
0answers
25 views

How to make the process run after closing the session [duplicate]

I have started a process in Linux without a terminal multiplexer like screen or tmux, without nohup. Now I want to logout from my remote ssh session without interrupting the execution of that process. ...
0
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3answers
134 views

My ubuntu background is totally black, even after opening programs such as terminal

My Ubuntu background is totally black when I log in. I can open the terminal, write command so that i open other programs, but I am unable to see any of it.
0
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1answer
230 views

RedHat / CentOS 5.5 background process has restricted memory

I run Fisheye that uses Java for Linux. Settings go like this: generate options FISHEYE_OPTS=`$JAVACMD -Xms100m -Xmx200m -cp $FISHEYE_HOME/fisheyeboot.jar com.cenqua.fisheye.boot.OptsSetter` build ...
-2
votes
1answer
52 views

Using semicolon to separate a background job from the following one? [duplicate]

Can we use semicolon to separate a background job from the following one? $ nohup evince tmp1.pdf &; nohup evince tmp.pdf & bash: syntax error near unexpected token `;'