Questions tagged [sigint]
30 questions
4
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0
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Confused about SIGINT trap
I am confused about the processing of SIGINT and EXIT traps in Bash scripts.
I wrote this script to test:
#!/usr/bin/env bash
set -e
exit_trap() {
printf "In exit_trap \$?=$?\n"
exit 0
...
- 2,380
-1
votes
1
answer
2k
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What does "trap: SIGINT: bad trap" mean and how do I fix it?
I moved code to a new virtual server running Ubuntu 22.
I have the following (edited to make names shorter) in my crontab so that it runs myCommand only if it is not already running:
*/1 * * * * ...
- 3
0
votes
1
answer
437
views
Run a command after interrupting while loop with Ctrl-C in bash one-liner?
In the below one-liner, I run an "infinite" while loop which prints some numbers:
$ bash -c 'trap stopit SIGINT; run=1; stopit() { run=0; }; while [ $run ]; do for i in {0..4}; do v=$(($i*50)...
- 590
0
votes
1
answer
360
views
Does a handled SIGINT affect pipe communication with a child process?
I have an interactive C program that reads a phrase from the terminal, and computes a series of anagrams. I also have a Perl program that reads and buffers lines from STDIN until receiving a reserved &...
- 389
0
votes
2
answers
1k
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When is mandatory send SIGINT programmatically?
I know the recommendable way to terminate a foreground process is through the SIGTERM signal, it because it gives the opportunity to the process itself to clean/release resources. This signal only can ...
- 2,156
11
votes
1
answer
3k
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Why does sleep, when run in a shell script, ignore SIGINT?
When I run sleep manually, and then kill -INT it, sleep exits immediately. For example:
$ /bin/sleep 60 &
[1] 4002356
$ kill -INT 4002356
[1]+ Interrupt /bin/sleep 60
$ ps -C ...
- 1,861
0
votes
1
answer
2k
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Is it possible to force a program that ignores signals to quit on ctrl-C?
I have a program that ignores SIGINT but that I want to run in the foreground. I would like to find a way to force it to close on Ctrl-C. Is there any way to write a wrapper (that you'd call ./wrapper....
- 165
0
votes
0
answers
2k
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Send SIGINT to a command launched inside bash script
I am executing a bash script and I want to correctly terminate a command (by pressing CTRL+C) that I am launching inside the script.
This is the script:
trap ctrl_c SIGINT
function ctrl_c()
{
PID = $!...
- 149
4
votes
2
answers
11k
views
How to make CTRL-C work in command line when it does not?
I'm struggling with not working CTRL+C in a certain environment shell command line (CentOS 7 / Vagrant guest of Windows host). I use bash there.
The OS, seem, does not matter.
Example run sleep 1000 ...
- 201
1
vote
0
answers
49
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Why does dmenu block SIGINT propagation?
When running Jetbrains IDEs (such as PyCharm and Android Studio) through dmenu, I get the following warning:
The IDE ignores SIGINT: the "Stop" button in run configurations may not work.
It then ...
- 111
1
vote
1
answer
430
views
Prevent SIGINT from reaching mysql subprocess
I have a perl script, which indirectly invokes mysql (to execute a long SQL script). I would like to disable Ctrl+C while that script is running, but somehow the signal still reaches mysql, which then ...
- 163
5
votes
1
answer
3k
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Just how dangerous is sending SIGINT to resize2fs tasked with shrinking?
I inherited an old PC-server (quad Pentium 4) that only had partitions for /, /boot and swap (RAID1 with 2 1T SATA disks), but needed to update the distro (from CentOS 6.9). I decided to create a new ...
- 379
0
votes
1
answer
2k
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Why doesn't CTRL + C exit vim? [duplicate]
I'm aware that if I press esc followed by typing :q!, I can exit the vim editor, due to this question.
However, the standard convention is for programs to exit when ctrl + c is pressed, which sends a ...
4
votes
2
answers
4k
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C SIGINT signal in Linux
I want to make a specific combination of keyboard keys in order to terminate a process e.x I want to terminate the process by pressin CTRL + C ^ 3 (pressing three times C: CTRL +CCC).
So basically I ...
- 123
2
votes
2
answers
336
views
Regain ability to use ^C to close backgrounded then (effectively) foregrounded processes
In the interactive console, pressing ^C on zenity --info & fg closes the Zenity window. One can only use zenity --info & wait in a script. But ^C doesn't close the Zenity window in this case. ...
- 974