Shell stuff
A couple of shell related things I gathered:
- Cool guide
- Bash's `
:' forces to return 1. For example, use it as in `|| :' trap 'overrides all installed signal handlers!DEBUG|EXIT' ( EXIT) ${X:}stuff. All string operations are interesting but hard to remembers/\(\)/\1/ set -Very handy -- look at -x/-u/-n for instance- Awk Kownledge Base.
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