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What does the “3am” section means in manpages?


Why does man print “gimme gimme gimme” at 00:30?No manual page for regex in section 3 - where is it?How do you output a list of all man pages in a particular section?What means the “integer argument” in system call descriptions?In what section do descriptions of C data-structures go?What is a Kernel Routine ?What is the “2001 article” for blocking “automated retrieval programs” referred to by the wget man page?How does `man git init` get the right man page?Why is this command to open man page and perform search not working?Man pages: When to put a new system call in section 2 and when in section 3?How to fix stray “Qq” groff_mdoc quoting macros in man page?













16















I found this accidentally.



I just typed man fork, and instead of showing the system call documentation, it showed to me an awk extension, however, the section page number was 3am, instead of just 3.



What does 3am means?










share|improve this question

















  • 6





    'Read it very early in the morning'.

    – bmargulies
    yesterday






  • 2





    My first thought was something like unix.stackexchange.com/questions/405783/…

    – Justin Lardinois
    19 hours ago















16















I found this accidentally.



I just typed man fork, and instead of showing the system call documentation, it showed to me an awk extension, however, the section page number was 3am, instead of just 3.



What does 3am means?










share|improve this question

















  • 6





    'Read it very early in the morning'.

    – bmargulies
    yesterday






  • 2





    My first thought was something like unix.stackexchange.com/questions/405783/…

    – Justin Lardinois
    19 hours ago













16












16








16


1






I found this accidentally.



I just typed man fork, and instead of showing the system call documentation, it showed to me an awk extension, however, the section page number was 3am, instead of just 3.



What does 3am means?










share|improve this question














I found this accidentally.



I just typed man fork, and instead of showing the system call documentation, it showed to me an awk extension, however, the section page number was 3am, instead of just 3.



What does 3am means?







man






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked yesterday









Peregring-lkPeregring-lk

280213




280213







  • 6





    'Read it very early in the morning'.

    – bmargulies
    yesterday






  • 2





    My first thought was something like unix.stackexchange.com/questions/405783/…

    – Justin Lardinois
    19 hours ago












  • 6





    'Read it very early in the morning'.

    – bmargulies
    yesterday






  • 2





    My first thought was something like unix.stackexchange.com/questions/405783/…

    – Justin Lardinois
    19 hours ago







6




6





'Read it very early in the morning'.

– bmargulies
yesterday





'Read it very early in the morning'.

– bmargulies
yesterday




2




2





My first thought was something like unix.stackexchange.com/questions/405783/…

– Justin Lardinois
19 hours ago





My first thought was something like unix.stackexchange.com/questions/405783/…

– Justin Lardinois
19 hours ago










1 Answer
1






active

oldest

votes


















16














It appears to be the manual page for a GNU Awk (gawk) extension module. The complete list is:



$ find /usr/share/man/man3 -name '*3am*' | xargs dpkg -S
gawk: /usr/share/man/man3/readfile.3am.gz
gawk: /usr/share/man/man3/inplace.3am.gz
gawk: /usr/share/man/man3/ordchr.3am.gz
gawk: /usr/share/man/man3/revoutput.3am.gz
gawk: /usr/share/man/man3/readdir.3am.gz
gawk: /usr/share/man/man3/filefuncs.3am.gz
gawk: /usr/share/man/man3/revtwoway.3am.gz
gawk: /usr/share/man/man3/time.3am.gz
gawk: /usr/share/man/man3/rwarray.3am.gz
gawk: /usr/share/man/man3/fork.3am.gz
gawk: /usr/share/man/man3/fnmatch.3am.gz


I would guess the am stands for awk module.






share|improve this answer


















  • 1





    In general, section 3 of the manual contains entries for library calls, which seems appropriate for gawk libraries, whereas fork() is carried out by the kernel and is therefore documented in section 2.

    – Kusalananda
    yesterday







  • 2





    Yeah it seems that some libraries or "man page extensions" adds a postfix to the man page section number. In my system I've some prefixes like cpp, ssl or perl.

    – Peregring-lk
    yesterday











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1 Answer
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16














It appears to be the manual page for a GNU Awk (gawk) extension module. The complete list is:



$ find /usr/share/man/man3 -name '*3am*' | xargs dpkg -S
gawk: /usr/share/man/man3/readfile.3am.gz
gawk: /usr/share/man/man3/inplace.3am.gz
gawk: /usr/share/man/man3/ordchr.3am.gz
gawk: /usr/share/man/man3/revoutput.3am.gz
gawk: /usr/share/man/man3/readdir.3am.gz
gawk: /usr/share/man/man3/filefuncs.3am.gz
gawk: /usr/share/man/man3/revtwoway.3am.gz
gawk: /usr/share/man/man3/time.3am.gz
gawk: /usr/share/man/man3/rwarray.3am.gz
gawk: /usr/share/man/man3/fork.3am.gz
gawk: /usr/share/man/man3/fnmatch.3am.gz


I would guess the am stands for awk module.






share|improve this answer


















  • 1





    In general, section 3 of the manual contains entries for library calls, which seems appropriate for gawk libraries, whereas fork() is carried out by the kernel and is therefore documented in section 2.

    – Kusalananda
    yesterday







  • 2





    Yeah it seems that some libraries or "man page extensions" adds a postfix to the man page section number. In my system I've some prefixes like cpp, ssl or perl.

    – Peregring-lk
    yesterday
















16














It appears to be the manual page for a GNU Awk (gawk) extension module. The complete list is:



$ find /usr/share/man/man3 -name '*3am*' | xargs dpkg -S
gawk: /usr/share/man/man3/readfile.3am.gz
gawk: /usr/share/man/man3/inplace.3am.gz
gawk: /usr/share/man/man3/ordchr.3am.gz
gawk: /usr/share/man/man3/revoutput.3am.gz
gawk: /usr/share/man/man3/readdir.3am.gz
gawk: /usr/share/man/man3/filefuncs.3am.gz
gawk: /usr/share/man/man3/revtwoway.3am.gz
gawk: /usr/share/man/man3/time.3am.gz
gawk: /usr/share/man/man3/rwarray.3am.gz
gawk: /usr/share/man/man3/fork.3am.gz
gawk: /usr/share/man/man3/fnmatch.3am.gz


I would guess the am stands for awk module.






share|improve this answer


















  • 1





    In general, section 3 of the manual contains entries for library calls, which seems appropriate for gawk libraries, whereas fork() is carried out by the kernel and is therefore documented in section 2.

    – Kusalananda
    yesterday







  • 2





    Yeah it seems that some libraries or "man page extensions" adds a postfix to the man page section number. In my system I've some prefixes like cpp, ssl or perl.

    – Peregring-lk
    yesterday














16












16








16







It appears to be the manual page for a GNU Awk (gawk) extension module. The complete list is:



$ find /usr/share/man/man3 -name '*3am*' | xargs dpkg -S
gawk: /usr/share/man/man3/readfile.3am.gz
gawk: /usr/share/man/man3/inplace.3am.gz
gawk: /usr/share/man/man3/ordchr.3am.gz
gawk: /usr/share/man/man3/revoutput.3am.gz
gawk: /usr/share/man/man3/readdir.3am.gz
gawk: /usr/share/man/man3/filefuncs.3am.gz
gawk: /usr/share/man/man3/revtwoway.3am.gz
gawk: /usr/share/man/man3/time.3am.gz
gawk: /usr/share/man/man3/rwarray.3am.gz
gawk: /usr/share/man/man3/fork.3am.gz
gawk: /usr/share/man/man3/fnmatch.3am.gz


I would guess the am stands for awk module.






share|improve this answer













It appears to be the manual page for a GNU Awk (gawk) extension module. The complete list is:



$ find /usr/share/man/man3 -name '*3am*' | xargs dpkg -S
gawk: /usr/share/man/man3/readfile.3am.gz
gawk: /usr/share/man/man3/inplace.3am.gz
gawk: /usr/share/man/man3/ordchr.3am.gz
gawk: /usr/share/man/man3/revoutput.3am.gz
gawk: /usr/share/man/man3/readdir.3am.gz
gawk: /usr/share/man/man3/filefuncs.3am.gz
gawk: /usr/share/man/man3/revtwoway.3am.gz
gawk: /usr/share/man/man3/time.3am.gz
gawk: /usr/share/man/man3/rwarray.3am.gz
gawk: /usr/share/man/man3/fork.3am.gz
gawk: /usr/share/man/man3/fnmatch.3am.gz


I would guess the am stands for awk module.







share|improve this answer












share|improve this answer



share|improve this answer










answered yesterday









steeldriversteeldriver

37.6k45389




37.6k45389







  • 1





    In general, section 3 of the manual contains entries for library calls, which seems appropriate for gawk libraries, whereas fork() is carried out by the kernel and is therefore documented in section 2.

    – Kusalananda
    yesterday







  • 2





    Yeah it seems that some libraries or "man page extensions" adds a postfix to the man page section number. In my system I've some prefixes like cpp, ssl or perl.

    – Peregring-lk
    yesterday













  • 1





    In general, section 3 of the manual contains entries for library calls, which seems appropriate for gawk libraries, whereas fork() is carried out by the kernel and is therefore documented in section 2.

    – Kusalananda
    yesterday







  • 2





    Yeah it seems that some libraries or "man page extensions" adds a postfix to the man page section number. In my system I've some prefixes like cpp, ssl or perl.

    – Peregring-lk
    yesterday








1




1





In general, section 3 of the manual contains entries for library calls, which seems appropriate for gawk libraries, whereas fork() is carried out by the kernel and is therefore documented in section 2.

– Kusalananda
yesterday






In general, section 3 of the manual contains entries for library calls, which seems appropriate for gawk libraries, whereas fork() is carried out by the kernel and is therefore documented in section 2.

– Kusalananda
yesterday





2




2





Yeah it seems that some libraries or "man page extensions" adds a postfix to the man page section number. In my system I've some prefixes like cpp, ssl or perl.

– Peregring-lk
yesterday






Yeah it seems that some libraries or "man page extensions" adds a postfix to the man page section number. In my system I've some prefixes like cpp, ssl or perl.

– Peregring-lk
yesterday


















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