Question about SED

[BryanY]

I'd like to access a file and replace every instance of "TERM=sun" to "TERM=vt100".

Normally i would just use the code

sed -e 's/TERM=sun/vt100/' file

But unfortunately, larger words also match.

(For example "TERM=sun-color" gets changed to "TERM=vt100-color")

How would i force it so that it only changes an exact match?

 

[futurelet]

If it occupies the entire line:

awk '{sub(/^TERM=sun$/,"TERM=vt100")}1' file

 

[stefanwagner]

or the sed-way:

sed -e 's/TERM=sun$/TERM=vt100/g' file

Perhaps you find another delimiter (like blank or tab) to be useful:

sed -e 's/TERM=sun\([ \t]\)/TERM=vt100\1/g' file

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