07-11-2005
Thanks - I understand now.
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Another newbie to Unix scripting Q..
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2. Shell Programming and Scripting
Hi
In my shell script, I'm trying to find the line count of a file and assign it to a variable.
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3. Shell Programming and Scripting
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4. Shell Programming and Scripting
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5. Shell Programming and Scripting
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6. Shell Programming and Scripting
Hi folks.
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7. Shell Programming and Scripting
my script is some thing like this
i11="{1,2,3,4,5,6,7,8,9,10,11,}"
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x="$value"
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8. Shell Programming and Scripting
Hi
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10. Shell Programming and Scripting
I have a date column as 06302015 but I need to have variable which extracts 063015.
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################################
#!/usr/bin/ksh
DT=06302015
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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)