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cheat.sheets/sheets/umask

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2020-11-17 16:00:31 +00:00
# umask
# Display or set file mode mask
# Unless configured otherwise, this will set the umask ("user mask" or "file
# mode creation mask") for only the current user, and only his or her current
# session. The (one) leading zero is optional, unless you otherwise need it.
#
# This umask setting is actually recommended for security by RHEL, and is also
# mentioned and I believe recommended in the Arch Linux Wiki.
#
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# The result of '0077' being -- and I'll use standard octal with which we're
# all probably familiar -- that all new files are created using the '600'
# permissions, and directories are '700'.
#
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# Remember, the standard format means 4=read, 2=write, and 1=execute.
# However, the umask uses the same, but is inverted, so a umask of '077' would
# be 700, and correctly lowers to 600 when it's just a file.
umask 0077
# Akin to above, but instead, output the current umask setting.
umask