Hi Friends,
Is it possible to exit nicely(ie, to echo a message with the error occurred) from a shell script(quiet a big one :)) once it encounter an error in between the lines?
For example, in my script I am calling the command mkdir and sometimes (when the directory already exists) it... (4 Replies)
there are many script in my project.i am having a problem when i am trying to quit from child script.what is the command to wrap up all the parent script and calling script as well? exit 0 is not working.please help.... (1 Reply)
Hi Folks.
My script is not exiting after run though its working correctly please suggest.
#!/bin/ksh
trap '' HUP
. /bin/functions
config_env
PATH=/bin:/usr/bin:/usr/local/bin:$EXEC_PATH:$ORACLE_HOME/bin
MONTH=$(control_register month)
YEAR=$(control_register year)
DATE_NOW="Job... (1 Reply)
I have a script planned for the Helpdesk to allow them to (on a couple of RHEL 3 / RHEL 5 servers) reset passwords, stop / start printers, and clear print queues. The appropriate sudo permissions were given to their accounts, and the individual functions all work just fine. The ability to move... (0 Replies)
I have to write a script in ksh which again should call another script. Say A.ksh is calling B.ksh. Now in B.ksh if the condition we are checking for is true then we have to go back to the main script A.ksh or if the condition in B.ksh is false then we have to totally come out of the scripts.
I... (1 Reply)
This is what I've tried:
#!/bin/sh
send sh
send showifs
send exit
! killall minicom
My problem is that for some reason when I do this it doesn't give me the results of the prior commands sent like showifs
So I suspect my syntax is wrong. (1 Reply)
Below is the script that i'm using but i'm getting an error,
echo -n "Read the letter >(enter a or b or c) "
read letter
if || || ;
then
echo "unacceptable character"
else
echo "Character Accepted"
fi
if the character entered is not equal to a or b or c, the script should... (6 Replies)
Hi Team,
Need your help for the below code snippet. I wrote a module to read the file names remote server using file name convention.
Issue : My script is coming out from while loop without reading complete file.
test1()
{
while read line
do
echo $line
file_nm_convention=`echo... (3 Replies)
function2()
{
cmd1
cmd2
cmd3
....
cmdn
}
function2()
{
cmd11
cmd12
cmd13
....
....
}
for i in {1,2} (7 Replies)
Discussion started by: yanglei_fage
7 Replies
LEARN ABOUT CENTOS
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)