On Wed, 5 Dec 2007, Nathan Aubrey wrote:
> I need to replace some words with other words, but sometimes the words
> are not present, so I need to add the words.
> In a config file I use, it has the following field
>
> KIDS :
> Mother : Amanda
> Father : Scott
>
>
> It is easy to swap out the names of mother or father, as the variables
> are there, but if I try to swap out a kids name and there is no kids
> name already in place, how do I add it instead? Is it one command, or
> must I test if the content is empty then add instead of replacing?
If I understand you correctly, it would no different.
sed -e 's/^\(KIDS[^:]*: \).*$/\1Newname/'
Many ways to do this, but the above if there is or is not a name.
> The field example cannot change as it's just the format I use...
> I appreciate any insite, sed is a great tool, but man! what a beast!
Jeremy C. Reed
p.s. I use sed constantly. Today, I wrote a simple script using sed to
convert plain text to latex (special characters).
sed \
-e 's/\\/BBaaCCkkSSllAAssHH/g' \
-e 's/\#/\\#/g' \
-e 's/\$/\\$/g' \
-e 's/\%/\\%/g' \
-e 's/\~/\\~/g' \
-e 's/\_/\\_/g' \
-e 's/\^/\\^/g' \
-e 's/{/\\{/g' \
-e 's/}/\\}/g' \
-e 's/\ /\~\~\~\~/g' \
-e 's/^ /\~/g' \
-e 's/ /\~\~/g' \
-e 's/^$/ \~ \\\\/g' \
-e 's/BBaaCCkkSSllAAssHH/\\textbackslash{}/g' \
-e 'G' # double space
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