HPR2293: More supplementary Bash tips

Hacker Public Radio

More supplementary Bash tips Pathname expansion; part 2 of 2 Expansion As we saw in the last episode 2278 (and others in this sub-series) there are eight types of expansion applied to the command line in the following order: Brace expansion (we looked at this subject in episode 1884) Tilde expansion (seen in episode 1903) Parameter and variable expansion (this was covered in episode 1648) Command substitution (seen in episode 1903) Arithmetic expansion (seen in episode 1951) Process substitution (seen in episode 2045) Word splitting (seen in episode 2045) Pathname expansion (the previous episode 2278 and this one) This is the last topic in the (sub-) series about expansion in Bash. In this episode we will look at extended pattern matching as also defined in the “Manual Page Extracts” section at the end of the long notes. Long Show Notes I have written out a moderately long set of notes about this subject and these are available here. Links Previous shows in this series HPR episode 1648 “Bash parameter manipulation” HPR episode 1843 “Some Bash tips” HPR episode 1884 “Some more Bash tips” HPR episode 1903 “Some further Bash tips” HPR episode 1951 “Some additional Bash tips” HPR episode 2045 “Some other Bash tips” HPR episode 2278 “Some supplementary Bash tips” Other HPR series referenced: “Learning sed” series on HPR “Learning Awk” series on HPR Wikipedia article on glob patterns Advanced Bash Scripting Guide: “Globbing” Article on Greg’s Wiki entitled “Globs” Questions about Bash extended globbing on Stack Exchange: Question 1: How to list just one file with ‘ls’ Question 2: