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53 lines
1.2 KiB
Markdown
53 lines
1.2 KiB
Markdown
# The export builtin command
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## Synopsis
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export [-fn] [NAME[=VALUE] ...]
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export -p
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## Description
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The `export` builtin command is used to mark variables or functions
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referenced by `NAME` for automatic export to the environment. If `NAME`
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is a shell variable, a value `VALUE` can be assigned before exporting
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it.
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### Options
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|Option|Description|
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|------|-----------|
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|`-f`|refer to shell functions|
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|`-n`|remove the export property from any referenced `NAME`|
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|`-p`|print all exported variables, with `-f`, print all exported functions - all in a format re-usable as input|
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An argument of `--` disables further option processing.
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### Return status
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|Status|Reason|
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|------|------|
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|0|no error|
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|!=0|invalid option|
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|!=0|a given `NAME` is invalid|
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## Examples
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Set the display to use when launching a GUI application (useful during
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SSH sessions):
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export DISPLAY=":0"
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Set your default text editor (e.g. SublimeText):
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export EDITOR=subl
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## Portability considerations
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- in POSIX(r), only the `-p` option is specified
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- in POSIX(r), only variables (with value assignment) are to be
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exported, not shell functions
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## See also
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- [declare](../../commands/builtin/declare.md)
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