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Thread: i want to extract details for particular file
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Old 08-21-2008
otheus's Avatar
otheus otheus is offline Forum Staff  
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Join Date: Feb 2007
Location: Innsbruck, Austria
Posts: 1,893
Many ways to do this... But it is a bit tricky.

Code:
find_uuid() {
  dev=$1
  awk '/^uuid/ { uuid=$3 } /^device-config/ && $NF == '$dev' { print uuid }' uuid-file
}

You'll need to change the filename (uuid-file) to the one you want (or empty for stdin). Then just do "find_uuid /dev/sdc" from the shell.

The trick is in realizing that awk is a series of pattern-script pairs, not just one. The first one is used to remember the most-recently seen uuid. The second prints it out when the device name matches.