Questions tagged [jobs]
Job control in a shell
145 questions
29
votes
2
answers
6k
views
Why does "yes&" crash my Bash session?
"Yes, and..." is a wonderful rule-of-thumb in improvisational comedy. Not so much in the UNIX world.
When I run the admittedly silly yes& command, I cannot interrupt it. The terminal ...
- 262
0
votes
1
answer
628
views
How can I have "names" for my background processes (not just the command)?
I run a lot of vim windows, and often put them in the bg. The problem is that they all say vim when I list jobs so it's hard to distinguish.
[1] - suspended nvim
[2] - suspended nvim
[3] + ...
- 101
0
votes
1
answer
5k
views
Cron Job vs. Scheduler: Understanding the Differences and Use Cases
What are the key differences between a Cron job and a scheduler, and in what use cases is using one of these tools more appropriate than using the other?
- 3
0
votes
1
answer
104
views
Why are commands reading from /dev/stdin get a status "[1]+ Stopped" when sent to background?
I have tried running the following commands:
cat
base64 /dev/stdin
md5sum /dev/stdin
tail /dev/stdin
In all cases when I do:
^Z
$ bg
$ jobs
I get the status: [1]+ Stopped instead of [1]+ Running.
...
- 889
4
votes
1
answer
238
views
Why do backgrounded commands in Zsh functions not show correctly in jobs?
In Bash 5.2, the output of jobs after either of the following is identical modulo job numbers:
sleep 3
# press C-z
s() { sleep 3; }
s
# press C-z
In both, jobs produces something like
[1]+ Stopped ...
- 552
6
votes
1
answer
1k
views
Why jobs lost when after reconnect ssh?
I have a job that runs in the background via ctrl + z and bg, and after reconnecting ssh I cannot find that job in the jobs command but can find it in ps grep. For now, I searched this and I get the ...
- 103
3
votes
1
answer
2k
views
What signal do bg and fg send?
I know that ctrl + z changes a process from foreground to background - as suspended - through SIGTSTP. I am able to re-run that background suspended process through either fg or bg as required.
...
- 2,186
20
votes
2
answers
96k
views
How do I list all background processes?
Is it possible to list all running background processes with the ps command, or is the only option for getting a list of background processes the jobs command?
- 315
2
votes
2
answers
1k
views
Call other process after executing a blocking process in shell
I have a process that is blocking in nature. It is executed first. In order to execute the second process, I moved the first process to the background and executed the second process. Using the wait ...
- 143
2
votes
2
answers
58
views
Is there a way to quickly change dir to one from where one of the jobs is running?
The output of jobs looks something like this
[1] Stopped TERM=xterm-256color vim --servername vim ~/.gitconfig
[2]- Stopped TERM=xterm-256color vim --servername vim ~...
- 2,342
3
votes
1
answer
11k
views
Reliable way to get PID of piped background process
I need to retrieve the PID of a process piped into another process that together are spawned as a background job in bash. Previously I simply relied on pgrep, but as it turns out there can be a delay ...
- 53
0
votes
2
answers
1k
views
cron job terminating after sometime while executing the script
I have several cronjobs which runs at different times in a day, but one particular cron job is not running as expected and getting terminated after sometime.
0 0 * * * python3 /scratch/pyscripts/...
- 101
3
votes
0
answers
184
views
Can't grep or word count the output of jobs command in dash
This is what I tested in Arch's dash shell and FreeBSD's default sh shell, the results are the same.
$ sleep 100 &
$ jobs
[1] + Running sleep 100
$ jobs | wc
0 0 ...
- 131
0
votes
0
answers
389
views
run one command and execute another after first killed by CTRL C in bash
I need to start a service1 in bash commandline. After a while I dont need that service anymore
and I do a CTRL-C to stop it. The service started another background service2. To stop that I usually do ...
- 101
0
votes
0
answers
543
views
start command in linux
I have a custom script which runs on a cPanel server (CentOS 6) which is as below. It starts a service on the specified port which accepts incoming data.
It uses start command and runs ok.
#!/bin/bash
...
- 107