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Create key/value pairs in bash

Terminal - Create key/value pairs in bash
$ hash="foo:bar"; key=${hash%:*}; value=${hash#*:}; echo "Key: $key Value: $value"
2011-02-21 14:47:28
User: bartonski
Functions: echo
Create key/value pairs in bash

This is a quick and dirty way of creating key/value pairs in bash. Not as flexible as an associative array, but often powerful enough to be useful. For example, if I want to rename sets of files in a way that I can't do with wildcards, I'll create something like 'rename-me.txt'

filename_with_no_pattern:aa.txt\n AnotherPieceOfText:ab.txt\n /deeply/nested/file/with/no/pattern.txt:ac.txt\n

Then I'll traverse rename-me.txt with a read loop

cat rename-me.txt | while read line; do old=${line%:*}; new=${line#*:}; mv $old $new; done


There are 3 alternatives - vote for the best!

Terminal - Alternatives

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