10-03-2002
Assigning the return of an fgrep???
Im haveing a problem with a script that i am currently writing. I am new to scripting and dont know it all that well. I cant use perl so please dont post perl scripts.
The problem is when i try and asign the result of the fgrep to qdetail. It does not seem to like that assignment. any ideas would be great. I have tried it 100 different ways and cant seem to assign that return at all. All the echos on the bottoms are just tests.
echo "\tPlease enter the printer queue you wish to edit>\c"
read qename
echo "QeName:" $qename
qdetail=fgrep $qename ../data/findprinter.dat
echo "Queue Name:"${qdetail#*!}"\n"
echo "Dataport:"${qdetail##~}"\n"
echo "test:"$qdetail"\n"
echo "qdetail:" $qdetail
get_return
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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)