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50 lines
2.2 KiB
Plaintext
50 lines
2.2 KiB
Plaintext
\section umask umask - Set or get the shells resource usage limits
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\subsection umask-synopsis Synopsis
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<code>umask [OPTIONS] [MASK]</code>
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\subsection umask-description Description
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With no argument, the current file-creation mask is printed, if an
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argument is specified, it is the new file creation mask. The mask may
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be specified as an octal number, in which case it is interpreted as
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the rights that should be masked away, i.e. it is the inverse of the
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file permissions any new files will have.
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If a symbolic mask is specified, the actual file permission bits, and
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not the inverse, should be specified. A symbolic mask is a comma
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separated list of rights. Each right consists of three parts:
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- The first part specifies to whom this set of right applies, and can
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be one of \c u, \c g, \c o or \c a, where \c u specifies the user who
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owns the file, \c g specifies the group owner of the file, \c o
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specific other users rights and \c a specifies all three should be
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changed.
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- The second part of a right specifies the mode, and can be one of \c
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=, \c + or \c -, where \c = specifies that the rights should be set to
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the new value, \c + specifies that the specified right should be added
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to those previously specified and \c - specifies that the specified
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rights should be removed from those previously specified.
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- The third part of a right specifies what rights should be changed
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and can be any combination of \c r, \c w and \c x, representing
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read, write and execute rights.
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If the first and second parts are skipped, they are assumed to be \c a
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and \c =, respectively. As an example, <code>r,u+w</code> means all
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users should have read access and the file owner should also have
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write access.
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- <code>-h</code> or <code>--help</code> print this message
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- <code>-S</code> or <code>--symbolic</code> prints the file-creation mask in symbolic form instead of octal form. Use <code>man chmod</code> for more information.
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- <code>-p</code> or <code>--as-command</code> prints any output in a form that may be reused as input
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The umask implementation in fish should behave identically to the one
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in bash.
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\subsection umask-example Example
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<code>umask 177</code> or <code>umask u=rw</code>sets the file
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creation mask to read and write for the owner and no permissions at
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all for any other users.
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