Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Catching ctrl-C or ctrl-D

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Catching ctrl-C or ctrl-D
# 1  
Old 05-02-2006
Catching ctrl-C or ctrl-D
Hi there,
I'm using HP-UX 11 machine. I am running a script, thats gonna take a long time to execute. When I press ctrl-c to come out of my script, I have to catch that signal(ctrl-c) and display that ctrl-c had been pressed. How can I do it.


Thanks in advance
# 2  
Old 05-02-2006
Read about trap in man bash/ksh. And then search this forum with the keywords 'trap signal'
# 3  
Old 05-02-2006
I use this trap in one of my install scripts. So if someone hits control -c when my install script is running, it prints that the install was aborted.

USER=$(logname)
LOG=/tmp/sample_install.log
#Set Trap
trap 'print "Install was aborted in the middle of the install by $USER" | tee -a $LOG; exit 1' 1 2 15

Trap based on the signals. I think there is a total of 31 or so. The above line traps for signal 1, 2, and 15.

1 = HUP
2 = INT
15 = TERM

*The output of this command may differ slightly with operating systems.

PS..Buy the book, "Unix Shells by example" Ellie Quigley

-X
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Automation of keyboard inputs..like Ctrl+d and Ctrl+a

Hi..! I'm stuck with my automation of starting a process and keeping it running even after the current ssh session has exited.. So i'm trying to use command 'screen'. which is doing exactly what i wanted, But the problem is automation of the same. i will have to press Ctrl+a and Ctrl+d for... (2 Replies)
Discussion started by: chandana hs
2 Replies

2. UNIX for Dummies Questions & Answers

Ctrl-V + Ctrl-J for newline character does not work inside vi editor

Hi friends, I am trying to add a newline char ('\n') between the query and the commit statement in the following shell script. #! /bin/sh echo "select * from tab; commit;" > data.sql I have tried typing in "Ctrl-V + Ctrl-J" combination which has inserted ^@ (NUL) character but the commit... (1 Reply)
Discussion started by: royalibrahim
1 Replies

3. Shell Programming and Scripting

How to handle CTRL+Z or CTRL+C in shells script?

Hi, while executing shell script, in the middle of the process, if we kill the shell script( ctrl+z or ctrl+c), script will be killed and the files which using for the script will be in the folder. How to handle those scenarios. Is there any possibilities, if user breaks the script, I need to... (3 Replies)
Discussion started by: ckchelladurai
3 Replies

4. Linux

ctrl+c not working

Hi All, I have ran one command tail -f <filename> to view newly appended text to that file. When i was done i pressed ctrl+c command to stop it but to my suprise it didn't work. I then tried top command and pressed ctrl+c and it worked fine and command aborted. I then just checked the tail... (0 Replies)
Discussion started by: tushar_shah06
0 Replies

5. Shell Programming and Scripting

Ctrl-C or Ctrl-Z causing exit the session

H! I have written script where it need to invoke the perl script in background, then write the pid in temp file then bring back the job to foreground. whenever the Ctrl-C or Ctrl-Z is pressed in the script has to exit and prompt should be dispalyed. but this script causing exit from shell session... (2 Replies)
Discussion started by: jramesh1
2 Replies

6. Programming

Catch ctrl+d in C

Hello, I am programming some kind of shell in special distribution of Linux. My trouble comes with programming the sort function. It should work the same like in the standard shell. When you terminate input, there's need to put End Of Transmission character, which is CTRL+D. But I am not able to... (2 Replies)
Discussion started by: samciz
2 Replies

7. UNIX for Dummies Questions & Answers

CTRL/C does not work

Hi My CTRL/C does not work thought the STTY setting looks Ok Appreciate your assistance $stty -a speed 38400 baud; rows = 24; columns = 80; ypixels = 0; xpixels = 0; eucw 1:0:0:0, scrw 1:0:0:0 intr = ^c; quit = ^\; erase = ^?; kill = ^u; eof = ^d; eol = <undef>; eol2 = <undef>;... (10 Replies)
Discussion started by: zam
10 Replies

8. AIX

Disable ctrl-c,ctrl-d,ctrl-d in ksh script

I wrote a ksh script for Helpdesk. I need to know how to disable ctrl-c,ctrl-z,ctrl-d..... so that helpdesk would not be able to get to system prompt :confused: (6 Replies)
Discussion started by: wtofu
6 Replies

9. UNIX for Dummies Questions & Answers

Enabling Ctrl-c

Do you have to set somthing in a users .profile to allow use of Ctrl-C (3 Replies)
Discussion started by: Corewin
3 Replies

10. UNIX for Dummies Questions & Answers

Script ctrl+c

How do you make a script so the user can not press ctrl+c and break out of the script? Thanks, :) (1 Reply)
Discussion started by: newtounix
1 Replies
Login or Register to Ask a Question