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precise
12.04 LTS
trusty
14.04 LTS
xenial
16.04 LTS
artful
17.10
bionic
18.04 LTS
cosmic
18.10
Section Description
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(1) -
Executable programs or shell commands
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(2) -
System calls (functions provided by the kernel)
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cron(3)
cron(3)
cron(3)
cron(3)
(3) -
Library calls (functions within program libraries)
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(4) -
Special files (usually found in /dev)
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(5) -
File formats and conventions eg /etc/passwd
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(6) -
Games
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(7) -
Miscellaneous (including macro packages and conventions)
cron(8)
cron(8)
cron(8)
cron(8)
cron(8)
cron(8)
(8) -
System administration commands (usually only for root)