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dash — Debian Almquist Shell, a modern, POSIX-compliant implementation of `sh` (not Bash-compatible). More

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the dash command: Debian Almquist Shell, a modern, POSIX-compliant implementation of sh (not Bash-compatible). More information: <https://manned.org/dash>.

Solution

dash — Debian Almquist Shell, a modern, POSIX-compliant implementation of sh (not Bash-compatible). More information: <https://manned.org/dash>.

Start an interactive shell session:

dash

Execute specific [c]ommands:

dash -c "{{echo 'dash is executed'}}"

Execute a specific script:

dash {{path/to/script.sh}}

Check a specific script for syntax errors:

dash -n {{path/to/script.sh}}

Execute a specific script while printing each command before executing it:

dash -x {{path/to/script.sh}}

Execute a specific script and stop at the first [e]rror:

dash -e {{path/to/script.sh}}

Execute specific commands from stdin:

{{echo "echo 'dash is executed'"}} | dash

Code Snippets

Start an interactive shell session

dash

Execute specific [c]ommands

dash -c "{{echo 'dash is executed'}}"

Execute a specific script

dash {{path/to/script.sh}}

Check a specific script for syntax errors

dash -n {{path/to/script.sh}}

Execute a specific script while printing each command before executing it

dash -x {{path/to/script.sh}}

Context

tldr-pages: common/dash

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