Why does gnu which show a script instead of a file path

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I encounterd the following output while using which 



[user@localhost ~]$ which gem
gem ()



I have seen which show aliases but not bash scripts before.



This script obviously came from RVM but how did it get in to which and where can I find it on my filesystem? It isn't in .bashrc.




bash which




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  • Related: unix.stackexchange.com/a/85250/117549 -- quoting: "There is a GNU which which is probably the most extravagant one. It tries to extend what the which csh script did to other shells: you can tell it what your aliases and functions are so that it can give you a better answer (and I believe some Linux distributions set some global aliases around that for bash to do that)."
    – Jeff Schaller
    Jan 31 at 1:20











  • See also: unix.stackexchange.com/q/322817/117549
    – Jeff Schaller
    Jan 31 at 1:21






  • 3




    that's not a script, it's a shell function.
    – cas
    Jan 31 at 5:04














up vote
0
down vote

favorite












I encounterd the following output while using which 



[user@localhost ~]$ which gem
gem ()



I have seen which show aliases but not bash scripts before.



This script obviously came from RVM but how did it get in to which and where can I find it on my filesystem? It isn't in .bashrc.




bash which




share|improve this question




















  • Related: unix.stackexchange.com/a/85250/117549 -- quoting: "There is a GNU which which is probably the most extravagant one. It tries to extend what the which csh script did to other shells: you can tell it what your aliases and functions are so that it can give you a better answer (and I believe some Linux distributions set some global aliases around that for bash to do that)."
    – Jeff Schaller
    Jan 31 at 1:20











  • See also: unix.stackexchange.com/q/322817/117549
    – Jeff Schaller
    Jan 31 at 1:21






  • 3




    that's not a script, it's a shell function.
    – cas
    Jan 31 at 5:04












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I encounterd the following output while using which 



[user@localhost ~]$ which gem
gem ()



I have seen which show aliases but not bash scripts before.



This script obviously came from RVM but how did it get in to which and where can I find it on my filesystem? It isn't in .bashrc.




bash which




share|improve this question












I encounterd the following output while using which 



[user@localhost ~]$ which gem
gem ()



I have seen which show aliases but not bash scripts before.



This script obviously came from RVM but how did it get in to which and where can I find it on my filesystem? It isn't in .bashrc.





bash which





share|improve this question











share|improve this question




share|improve this question










asked Jan 31 at 0:34









Qwertie

241210




241210











  • Related: unix.stackexchange.com/a/85250/117549 -- quoting: "There is a GNU which which is probably the most extravagant one. It tries to extend what the which csh script did to other shells: you can tell it what your aliases and functions are so that it can give you a better answer (and I believe some Linux distributions set some global aliases around that for bash to do that)."
    – Jeff Schaller
    Jan 31 at 1:20











  • See also: unix.stackexchange.com/q/322817/117549
    – Jeff Schaller
    Jan 31 at 1:21






  • 3




    that's not a script, it's a shell function.
    – cas
    Jan 31 at 5:04
















  • Related: unix.stackexchange.com/a/85250/117549 -- quoting: "There is a GNU which which is probably the most extravagant one. It tries to extend what the which csh script did to other shells: you can tell it what your aliases and functions are so that it can give you a better answer (and I believe some Linux distributions set some global aliases around that for bash to do that)."
    – Jeff Schaller
    Jan 31 at 1:20











  • See also: unix.stackexchange.com/q/322817/117549
    – Jeff Schaller
    Jan 31 at 1:21






  • 3




    that's not a script, it's a shell function.
    – cas
    Jan 31 at 5:04















Related: unix.stackexchange.com/a/85250/117549 -- quoting: "There is a GNU which which is probably the most extravagant one. It tries to extend what the which csh script did to other shells: you can tell it what your aliases and functions are so that it can give you a better answer (and I believe some Linux distributions set some global aliases around that for bash to do that)."
– Jeff Schaller
Jan 31 at 1:20





Related: unix.stackexchange.com/a/85250/117549 -- quoting: "There is a GNU which which is probably the most extravagant one. It tries to extend what the which csh script did to other shells: you can tell it what your aliases and functions are so that it can give you a better answer (and I believe some Linux distributions set some global aliases around that for bash to do that)."
– Jeff Schaller
Jan 31 at 1:20













See also: unix.stackexchange.com/q/322817/117549
– Jeff Schaller
Jan 31 at 1:21




See also: unix.stackexchange.com/q/322817/117549
– Jeff Schaller
Jan 31 at 1:21




3




3




that's not a script, it's a shell function.
– cas
Jan 31 at 5:04




that's not a script, it's a shell function.
– cas
Jan 31 at 5:04










1 Answer
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Try this:



shopt -s extdebug
declare -F gem


From man builtins:



extdebug
 If set, behavior intended for use by debuggers is enabled:
 1. The -F option to the declare builtin displays the source file
 name and line number corresponding to each function name sup‐
 plied as an argument.





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    1 Answer
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    up vote
    0
    down vote













    Try this:



    shopt -s extdebug
    declare -F gem


    From man builtins:



    extdebug
     If set, behavior intended for use by debuggers is enabled:
     1. The -F option to the declare builtin displays the source file
     name and line number corresponding to each function name sup‐
     plied as an argument.





    share|improve this answer
























      up vote
      0
      down vote













      Try this:



      shopt -s extdebug
      declare -F gem


      From man builtins:



      extdebug
       If set, behavior intended for use by debuggers is enabled:
       1. The -F option to the declare builtin displays the source file
       name and line number corresponding to each function name sup‐
       plied as an argument.





      share|improve this answer






















        up vote
        0
        down vote










        up vote
        0
        down vote









        Try this:



        shopt -s extdebug
        declare -F gem


        From man builtins:



        extdebug
         If set, behavior intended for use by debuggers is enabled:
         1. The -F option to the declare builtin displays the source file
         name and line number corresponding to each function name sup‐
         plied as an argument.





        share|improve this answer












        Try this:



        shopt -s extdebug
        declare -F gem


        From man builtins:



        extdebug
         If set, behavior intended for use by debuggers is enabled:
         1. The -F option to the declare builtin displays the source file
         name and line number corresponding to each function name sup‐
         plied as an argument.






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Feb 2 at 0:07









        m0dular

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