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48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
====== The export builtin command ======
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===== Synopsis =====
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<code>
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export [-fn] [NAME[=VALUE] ...]
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export -p
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</code>
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===== Description =====
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The ''export'' builtin command is used to mark variables or functions referenced by ''NAME'' for automatic export to the environment. If ''NAME'' is a shell variable, a value ''VALUE'' can be assigned before exporting it.
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==== Options ====
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^Option ^Description ^
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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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|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 SSH sessions):
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<code>
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export DISPLAY=":0"
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</code>
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Set your default text editor (e.g. SublimeText):
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<code>
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export EDITOR=subl
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</code>
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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 exported, not shell functions
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===== See also =====
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* [[commands:builtin:declare]]
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