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what does "?" mean in ${foo:?} in bash?

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How to autofill source keystore password when importing pkcs12 to keystore

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slurm script gives "command not found"

How to remove or replace the key value from .env using bash script

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GNU Parallel - Detecting that a command run in parallel has completed

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division math in a bash script without bc?

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Recursive xattr fails horribly

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set length of captured group

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How to delete line with matching pattern from another file?

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Bash Autocompletion with multiple argument values per argument

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grep: unescaped ^ or $ not supported with -Pz

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Where to put shell script/function? .bashrc or bin? [closed]

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psql return code if zero rows found

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