Bash reference manual (opens in a new tab)
Understand quoting, expansion, redirection, pipelines, shell functions, and scripting semantics.
GNU Project · gnu.org
Maintained GNU manual; compare installed version
Shell
Shells, files & text processing
Build reliable shell workflows with the tools that underpin Linux.
Understand quoting, expansion, redirection, pipelines, shell functions, and scripting semantics.
The comprehensive reference for everyday file, text, permission, and system utilities.
Find files by metadata and compose robust find, xargs, and locate workflows.
Create, inspect, and extract archives; understand names, metadata, and incremental archive behavior.
Learn stream editing, substitutions, address ranges, and pattern-space operations.
Work with records, fields, patterns, associative arrays, and text-processing programs.