Sponsored Content
Full Discussion: ctrl c trapping signal
Top Forums Shell Programming and Scripting ctrl c trapping signal Post 302578108 by gangsta on Wednesday 30th of November 2011 09:43:16 PM
Old 11-30-2011
Quote:
Originally Posted by m.d.ludwig
Code:
#! /bin/bash

trap_ctrlC() {
    echo '<CTRL-C> has been trapped'
    read -p 'Enter to exit: ' line
    exit 1
}

trap trap_ctrlC INT

while true; do
    echo '<CTRL-C> to quit'
done

nothing happens when i press control c? It justs exits out no message is displayed
 

10 More Discussions You Might Find Interesting

1. 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

2. Shell Programming and Scripting

Ctrl-C signal propagation

Hello I have a master startup script (let's call it myScript) that displays a menu from which the user can start/stop several instances of a server. When I issue the start command for one of the servers from the menu and then exit myScript through the provided mechanism (enter "q" in this case),... (2 Replies)
Discussion started by: EvilBoz
2 Replies

3. Shell Programming and Scripting

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 Replies)
Discussion started by: sendhilmani123
2 Replies

4. Shell Programming and Scripting

How to continue in the loop after trapping signal

hi all.... plz tel me how can i solve this....here's the situation (just a sample!!).. $ cat sigtrap #!/usr/bin/perl $SIG{'INT'} = 'ABORT'; sub ABORT { print "\nStop the loop?? (y/n) : "; chop($ch=<STDIN>); if ($ch =~ //) { ... (3 Replies)
Discussion started by: tprayush
3 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. 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

7. 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

8. Shell Programming and Scripting

Vi : Is it possible to send ctrl + d signal from a file made with vi and executing it.

Hi Experts, Is it possible to send ctrl + d signal from a inside a file made with vi, using Ctrl V , Esc and 004 , escape sequence. Since : 004 should exit the script if executed. Is this something possible. I am trying with vi , I put this code ^ , and trying to execute it but... (4 Replies)
Discussion started by: rveri
4 Replies

9. 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

10. Shell Programming and Scripting

Send ctrl-C signal using bash script.

declare -a array=( "LLC-load-misses" "LLC-loads" "LLC-store-misses" "LLC-stores" "branch-load-misses" "branch-loads" "dTLB-load-misses" "dTLB-loads" "dTLB-store-misses" "dTLB-stores" "iTLB-load-misses" "iTLB-loads" "branch-instructions" "branch-misses" "bus-cycles" "cache-misses" "cache-references"... (2 Replies)
Discussion started by: BHASKAR JUPUDI
2 Replies
ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME
echo -- write arguments to the standard output SYNOPSIS
echo [-n] [string ...] DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline (' ') character, to the standard output. The following option is available: -n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2 compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup- press the newline character. Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does not accept the -n option. Consult the builtin(1) manual page. EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs. SEE ALSO
builtin(1), csh(1), printf(1), sh(1) STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. BSD
April 12, 2003 BSD
All times are GMT -4. The time now is 11:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy