A piggy bank of commands, fixes, succinct reviews, some mini articles and technical opinions from a (mostly) Perl developer.

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Quick reference

Useful bash flags for scripts verbose trace expand error exit

Useful flags:
set -v # "verbose" - echo commands
set -x # "xtrace" - like verbose but expands commands
set -e # "errexit" - abort script at first error
set -u # "nounset" - strict mode: undefined variable causes an exit

Long format:
set -o verbose

Bash "strict mode":
#!/bin/bash
set -euo pipefail
IFS=$'\n\t'