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












17















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


















  • 7





    'Read it very early in the morning'.

    – bmargulies
    2 days ago






  • 2





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

    – Justin Lardinois
    yesterday
















17















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


















  • 7





    'Read it very early in the morning'.

    – bmargulies
    2 days ago






  • 2





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

    – Justin Lardinois
    yesterday














17












17








17


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 2 days ago









Peregring-lkPeregring-lk

285213




285213








  • 7





    'Read it very early in the morning'.

    – bmargulies
    2 days ago






  • 2





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

    – Justin Lardinois
    yesterday














  • 7





    'Read it very early in the morning'.

    – bmargulies
    2 days ago






  • 2





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

    – Justin Lardinois
    yesterday








7




7





'Read it very early in the morning'.

– bmargulies
2 days ago





'Read it very early in the morning'.

– bmargulies
2 days ago




2




2





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

– Justin Lardinois
yesterday





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

– Justin Lardinois
yesterday










1 Answer
1






active

oldest

votes


















17














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♦
    2 days ago








  • 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
    2 days ago













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1 Answer
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17














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♦
    2 days ago








  • 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
    2 days ago


















17














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♦
    2 days ago








  • 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
    2 days ago
















17












17








17







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 2 days ago









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♦
    2 days ago








  • 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
    2 days ago
















  • 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♦
    2 days ago








  • 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
    2 days ago










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♦
2 days ago







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♦
2 days ago






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
2 days ago







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
2 days ago




















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