The snippet library.
Small, practical examples. Search by task or narrow things down below.
Reject a missing required configuration value
Bash Scripts: Check a required value explicitly and emit a controlled diagnostic before exiting.
Bash Scripts✓ Tested
Remove a filename extension
Keep the path while removing its final extension.
filename✓ Tested
Remove a known prefix with a shell pattern
Bash Scripts: The hash expansion removes the shortest matching prefix without changing the original variable.
Bash Scripts✓ Tested
Remove a trailing carriage return from a line
Bash Scripts: Use an ANSI-C quoted carriage return as the suffix pattern.
Bash Scripts✓ Tested
Remove a variable from one child’s environment
Bash Scripts: env -u removes an inherited value for a single command.
Bash Scripts✓ Tested
Remove an indexed element and compact the array
Bash Scripts: Unsetting an element leaves a gap; reassigning the values creates consecutive indices.
Bash Scripts✓ Tested
Repeat a command for several words
Bash Scripts: Repeat a command for several words with a small standalone Bash program.
Bash Scripts✓ Tested
Repeat until a condition becomes true
Bash Scripts: An until loop continues while its test returns a nonzero status.
Bash Scripts✓ Tested
Replace a text file with an atomic rename
Prepare new content beside the target before renaming it into place.
atomic write✓ Tested
Replace every occurrence in a string
Substitute text directly with Bash parameter expansion.
replace✓ Tested
Replace text with parameter expansion
Bash Scripts: Replace text with parameter expansion with a small standalone Bash program.
Bash Scripts✓ Tested
Return a value through a named output variable
Bash Scripts: A Bash nameref can update a caller-supplied variable without command substitution.
Bash Scripts✓ Tested