11-20-2008
10 More Discussions You Might Find Interesting
1. AIX
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
Hi
I have tried to disable the CTRL-Z key inside a shell(sh) script using the command trap "`echo "Ctrl-Z key disabled"`" 20But I am not able to exit from the script after pressing CTRL-Z key.
How to proceed this? Need reply soon (11 Replies)
Discussion started by: suganthic
11 Replies
3. Shell Programming and Scripting
I am trying to trap CTRL-C, now the program I call has it's own exit message, I think this is the problem ..
This is what I have now :
function dothis
{
echo 'you hit control-c'
exit
}
function settrap
{
trap dothis SIGINT
}
settrap
until false; do
./ITGRecv.exe
doneDoing this I... (2 Replies)
Discussion started by: Pmarcoen
2 Replies
4. Shell Programming and Scripting
Hello,
I have a script which copies via scp several large files to a remote server. What I want is that even if someone hits CTRL-C, the scp commands continues till the end.
Here is what I wrote
#! /bin/bash
function testFunction
{
echo "COPY START"
scp large.tar.gz... (11 Replies)
Discussion started by: RobertFord
11 Replies
5. Shell Programming and Scripting
Hi ,
i have a scenario where...i have to put a check where if script is executing more than 15mins i have to kill that script and n retry again 2nd time.
i this case i can use background process to do it but i feel trap will be the efficent way to do so...
but i dont know much about it... (1 Reply)
Discussion started by: crackthehit007
1 Replies
6. Shell Programming and Scripting
Hi All,
I would like to write a shell script to find Control M charactes and after getting the result i want to delete it. But in the script the following command couldn't work.
find . -exec grep -l '^M' {} \; > test.txt
^M is ctrl V and M
thanks in advance for any help. (4 Replies)
Discussion started by: jatanig
4 Replies
7. Shell Programming and Scripting
Hi All,
Although each line below seems to work by itself, I've been having trouble getting the Control-C trap working when I add the "|perl -pe..." to the end of the tail -f line, below.
(That |perl -pe statement basically just adds color to highlight the word "ERROR" while tailing a log... (2 Replies)
Discussion started by: chatguy
2 Replies
8. Shell Programming and Scripting
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
9. Shell Programming and Scripting
The below script has Perl script in it where it gives the usage details.
filer.sh
echo
echo -en "Enter filer : "
read filer
echo "test.pl -f $filer -F L"
Output
=========
The following hosts are online and available:
Name Total Allocated Used ... (2 Replies)
Discussion started by: nareshkumar522
2 Replies
10. Shell Programming and Scripting
Hello:
Am trying to understand why the method #2 works but method #1 does not.
For both methods, sending CTRL+C should kill both the Parent script & all of the spanwd background procs.
Method #1:
==========================
#!/bin/sh
ctrl_c()
{
echo "** Trapped CTRL-C"
... (3 Replies)
Discussion started by: gilgamesh
3 Replies
exit(1) User Commands exit(1)
NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps
SYNOPSIS
sh
exit [n]
return [n]
csh
exit [ ( expr )]
goto label
ksh
*exit [n]
*return [n]
DESCRIPTION
sh
exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of
the last command executed (an EOF will also cause the shell to exit.)
return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe-
cuted.
csh
exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the
expression expr.
The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches
for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to
jump to a label that occurs between a while or for built-in command and its corresponding end.
ksh
exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8
bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing
a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit
except for a shell which has the ignoreeof option (See set below) turned on.
return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the
least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return
is invoked while not in a function or a '.' script, then it is the same as an exit.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
break(1), csh(1), ksh(1), sh(1), attributes(5)
SunOS 5.10 15 Apr 1994 exit(1)