sed script to convert wikipedia links

Input: [[target|visible]]
Output: visible

Here's my try:

's:\[\[\[^\|]*|\(.*\)]]:\1:g'

(unesacped an开发者_JAVA技巧d spaced for readability:

's: [[ [^\|]* | (.*) ]]:\1:g'

)

But it doesn't work.

EDIT: Solved it:

's:\[\[[^]\|]*\|\([^]]*\)]]:\1:g'

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You could use extended regular expressions with sed -r:

echo '[[target|visible]]' | sed -r 's:^\[\[[^\|]*\|(.*)\]\]$:\1:'

I didn't find out how to match | with basic regexps...

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Try awk, its more suited for this job. Split on "|" and then get the 2nd field. Simple as that. Remove those ] as desired

$ echo "[[target|visible]]" | awk -F'|' '{gsub(/\]/,"",$2);print $2}'
visible

or any tools that does splitting of strings easily. eg Ruby(1.9+)

$ echo "[[target|visible]]" | ruby -e 'puts gets.split("|")[-1].gsub(/\]/,"")'
visible