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Full Discussion: cd then ls -l
Top Forums Shell Programming and Scripting cd then ls -l Post 60333 by Perderabo on Friday 14th of January 2005 07:53:00 PM
Old 01-14-2005
Quote:
Originally Posted by bhargav
alias cla="cd $1 ; ls -lrt"
That is the ksh syntax for an alias. But an alias in ksh cannot have parameters. That $1 will not be the parameter on the alias invocation. Use a function if you want parameters.
 
Test Your Knowledge in Computers #909
Difficulty: Easy
In computer science, a pointer is a programming language object that stores the memory address of another value located on a hard drive.
True or False?
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)

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