POSIX shell

Hold

Languages & Frameworks

A standard command-line shell environment defined by POSIX.

Why it's here

Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 1 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

2Hacker News·7/25/2026research
Using the shell colon as a useful no-op
The article explains two shell features: the null command `:` and parameter expansion with `:?` and `:=`. It shows how they can simplify scripts for argument validation, default values, redirection, and traps in POSIX-style shells. The piece frames these as practical shell idioms rather than new language features.