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* readonly: add page * Update readonly.md * Update readonly.md * Update pages/common/readonly.md Co-authored-by: Reinhart Previano Koentjoro <reinhart_previano@yahoo.com> * Update readonly.md * Update pages/common/readonly.md Co-authored-by: Jack Lin <blueskyson1401@gmail.com> * Update pages/common/readonly.md * Update pages/common/readonly.md * Update pages/common/readonly.md --------- Co-authored-by: Reinhart Previano Koentjoro <reinhart_previano@yahoo.com> Co-authored-by: Jack Lin <blueskyson1401@gmail.com>
17 lines
552 B
Markdown
17 lines
552 B
Markdown
# readonly
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> Create or modify read-only variables within a shell script, preventing the variable from being changed by subsequent commands.
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> This is useful when you want to ensure that a variable retains a constant value throughout the execution of a script.
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> More information: <https://manned.org/readonly.1p>.
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- Create a read-only variable:
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`readonly {{variable_name}}={{value}}`
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- Mark a variable as read-only:
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`readonly {{existing_variable}}`
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- [p]rint to the standard output the names and values of all read-only variables:
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`readonly -p`
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