Shell Scripting

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Allowed: Release Announcement of a command-line program designed for scripted use (e.g. bash, bats, awk, jq, coreutils/moreutils)
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submitted 1 week ago by MonkderVierte@lemmy.zip to c/shell@programming.dev

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I've seen : "${DB_HOST:=localhost}" because it assigns the variable if not set (: $… is just to run assignments standalone).

But that has the same effect like DB_HOST="${DB_HOST:-localhost} (use the string if not set), which is more readable.

While something like echo "${DB_HOST:=localhost}" smells from a mile, because it has output with side-effects.

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[–] bignose@programming.dev 2 points 1 week ago

DRY is from a time where one-letter variables were common.

That's absolutely not the case. Please look into the principle instead of assuming you know what it means.

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