HPR1903: Some further Bash tips

Some further Bash tips

Expansion

There are seven types of expansion applied to the command line in the following order:

• Brace expansion (we looked at this subject in the last episode 1884)
• Tilde expansion
• Parameter and variable expansion (this was covered in episode 1648)
• Command substitution
• Arithmetic expansion
• Word splitting
• Pathname expansion

We will look at some more of these in this episode but since there is a lot to cover, we'll continue in a later episode.

I have written out a moderately long set of notes about this subject and these are available here https://hackerpublicradio.org/eps/hpr1903_full_shownotes.html.

Links

• Bash Reference Manual:
  • Tilde Expansion: https://www.gnu.org/software/bash/manual/html_node/Tilde-Expansion.html
  • Command Substitution: https://www.gnu.org/software/bash/manual/html_node/Command-Substitution.html
• HPR episode 1648 "Bash parameter manipulation": https://hackerpublicradio.org/eps.php?id=1648
• HPR episode 1843 "Some Bash tips": https://hackerpublicradio.org/eps.php?id=1843
• HPR episode 1884 "Some more Bash tips": https://hackerpublicradio.org/eps.php?id=1884

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