Thank you to the many of you that responded so quickly! The answer was to use double quotes around the sed script rather than single quotes, as in the following. Sed -e "s/HOST/$HOST/g" > filename Very simple but so elusive! Thanks again! -----Original Message----- From: sunmanagers-bounces@sunmanagers.org [mailto:sunmanagers-bounces@sunmanagers.org] On Behalf Of Cohen, Laurence Sent: Wednesday, January 04, 2006 9:42 AM To: sunmanagers@sunmanagers.org Subject: Using variables in sed Hello everyone! Would anyone have a hint as to how to use a variable from the OS in sed? For example, I want to be able to substitue the hostname of a system for every instance of the word HOST in a file. I set the variable $HOST=`hostname` and then run sed -e 's/HOST/$HOST/g' > filename. The result of this is that it substitutes the string "$HOST" instead of it's value. I even tried sed -e 's/HOST/`echo $HOST`/g' > filename, and the result is that it substitutes the string "`echo $HOST`, which is also not what I want. How do I get sed to understand that I'm referring to a variable and not a string? Thanks! Laurence H. Cohen ISM Unix System Administrator _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagers _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Wed Jan 4 09:50:12 2006
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