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C Library Functions  - which (3)

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NAME

which(3f) - [M_io:SCANNAMES] given a command name find the pathname by searching the directories in the environment variable $PATH (LICENSE:PD)

CONTENTS

Syntax
Description
Options
Returns
Examples
See Also
Author
License

SYNTAX

function which(command) result(pathname)

   character(len=*),intent(in)  :: command
   character(len=:),allocatable :: pathname

DESCRIPTION

Given a command name find the first file with that name in the directories specified by the environment variable $PATH.

OPTIONS

COMMAND
	the command to search for

RETURNS

PATHNAME
	the first pathname found in the current user path. Returns blank if the command is not found.

EXAMPLES

Sample program:

    program demo_which
    use M_io, only : which
    implicit none
       write(*,*)’ls is ’,which(’ls’)
       write(*,*)’dir is ’,which(’dir’)
       write(*,*)’install is ’,which(’install’)
    end program demo_which

SEE ALSO

M_system:system_dir(3f)

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

which (3)

June 29, 2025

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