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1. Shell Programming and Scripting
I'm trying to write a script in a directory that goes through the column the user specifies of 4 files that are inside the directory and calculates the min and the max values. This means that if the user specifies column 5, the script will go through column 5 of all 4 files and all that should give... (2 Replies)
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2. UNIX for Advanced & Expert Users
I have a series of configuration files to deliver to multiple unix environments (dev, test, bench, prod etc). However I don't to modify them for each environment.
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3. UNIX for Dummies Questions & Answers
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I wrote a small fortran program that I want to control with a bash script. The bash script builds a parameter file that is used by the fortran program. I want to make it so I can access the script from any directory on my computer. How do I do that? Or what key words should I search for to find... (1 Reply)
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5. Shell Programming and Scripting
Hi folks
I have a unix script script1 in a directory folder1 and also I have few input log files in this directory. My input log files will be copied into this directory folder1 from the portable thumb drive.
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6. Shell Programming and Scripting
Hey guys im trying to check if the directory exists
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8. Shell Programming and Scripting
Hi,
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9. UNIX for Dummies Questions & Answers
i know this is a pretty lame question, but im trying to ftp a file to a unix server - and i want to put it in a folder called "tmp"
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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)