All,
I am having a shell script and i will pass different argument diferent time . Please tell me how can i find the last argument that i passsed each time when i exec the script.
Thanks,
Arun. (5 Replies)
Hi All,
When I am trying to execute the below shell script I got this error message.
script
==========
#!/bin/bash
/usr/java/jdk1.5.0_10/bin/java - classpath /var/lib/asterisk/agi-bin/mysql-connector-java-3.0.15-ga-bin.jar/:
/var/lib/asterisk/agi-bin/jarfiles:... (4 Replies)
Hi All
this is a simple script
#! /bin/bash
FileCnt=`ls -lrt $DIR/* | wc -l`
echo $FileCnt
how could i escape the error msg if there are no files in $DIR
ls: /home/sayantan/test/files/cnt/*: No such file or directory
0
Looking forward for a quick reply
Regards, Newbie... (3 Replies)
Hi!
Can anyone tell me what went wrong in my shell script?
for dt_val in `cut -f 1 -d '|' /prod/ods/satyaki/sqlldr/grp.dat`
do
echo $dt_val
done
And, the output is -
23
39 (7 Replies)
Hi ,
this is my first querry in this forum and I am new bee to the shell scripting..Please have a glance on my query and give ur valuable suggestions .
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Discussion started by: ajayram_arya
14 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)