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












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?






man







share|improve this question


















  • 6





    'Read it very early in the morning'.

    – bmargulies
    19 hours ago






  • 2





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

    – Justin Lardinois
    9 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?






man







share|improve this question


















  • 6





    'Read it very early in the morning'.

    – bmargulies
    19 hours ago






  • 2





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

    – Justin Lardinois
    9 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?






man







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




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
    19 hours ago






  • 2





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

    – Justin Lardinois
    9 hours ago














  • 6





    'Read it very early in the morning'.

    – bmargulies
    19 hours ago






  • 2





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

    – Justin Lardinois
    9 hours ago








6




6





'Read it very early in the morning'.

– bmargulies
19 hours ago





'Read it very early in the morning'.

– bmargulies
19 hours ago




2




2





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

– Justin Lardinois
9 hours ago





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

– Justin Lardinois
9 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

37.5k45389




37.5k45389








  • 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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