./ Why? Post: 61010

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Top Forums UNIX for Dummies Questions & Answers ./ Why? Post 61010 by 98_1LE on Wednesday 26th of January 2005 08:38:03 PM

01-26-2005

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It has nothing at all to do with $HOME not being in $PATH, well unless the script is in $HOME.

UNIX uses an environment variable $PATH as a colon delimited list to define directories to be searched for commands entered into the shell. If $PATH is st to /usr/bin only, when you type ls, it looks in /usr/bin for something called ls, then tries to execute it. If ls is not in /usr/bin, it returns a file not found error.

Typically the path is set to a limited number of directories to make searches quick. If you want to exectute something not in a directory in $PATH, you have to specify the path to it. You can do this explicitely from root (example: /usr/bin/ls ), relative to where you are ( cd / ; usr/bin/ls ), or if it is in the directory you are in, with ./ ( cd /usr/bin ; ./ls ).

You may also use ./ if you want to use a specific version of a program. Say there are two ps commands, one in /usr/bin, the other in /usr/ucb/bin/ps. You want to use the latter, you can type the full path, or cd to /usr/ucb/bin, then run ./ps

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lint

lint(1B)                                             SunOS/BSD Compatibility Package Commands                                             lint(1B)

NAME

       lint - C program verifier

SYNOPSIS

       /usr/ucb/lint [options]

DESCRIPTION

       /usr/ucb/lint  is  the  interface  to  the  BSD  Compatibility  Package  C  program  verifier.   It  is  a  script  that looks for the link
       /usr/ccs/bin/ucblint to the C program verifier. /usr/ccs/bin/ucblint is available only with the SPROcc package, whose default  location  is
       /opt/SUNWspro.  /usr/ucb/lint  is  identical to /usr/ccs/bin/ucblint, except that BSD headers are used and BSD  libraries are linked before
       base libraries.  The /opt/SUNWspro/man/man1/lint.1 man page is available only with the SPROcc package.

OPTIONS

       /usr/ucb/lint accepts the same options as /usr/ccs/bin/ucblint, with the following exceptions:

       -Idir           Search dir for included files whose names do not begin with a slash (/) prior  to  searching  the  usual  directories.  The
                       directories for multiple -I options are searched in the order specified. The preprocessor first searches for #include files
                       in the directory containing sourcefile, and then in directories named with -I options (if any), then  /usr/ucbinclude,  and
                       finally, in /usr/include.

       -Ldir           Add  dir  to  the  list  of  directories  searched  for  libraries  by  /usr/ccs/bin/ucblint.  This  option  is  passed  to
                       /usr/ccs/bin/ld. Directories specified with this option are searched before /usr/ucblib and /usr/lib.

       -Y P, dir       Change the default directory used for finding libraries.

EXIT STATUS

       The following exit values are returned:

       0               Successful completion.

       >0              An error occurred.

FILES

       /usr/lint/bin/ld        link editor

       /usr/lib/libc           C library

       /usr/ucbinclude         BSD Compatibility directory for header files

       /usr/ucblib             BSD Compatibility directory for libraries

       /usr/ucblib/libucb      BSD Compatibility C library

       /usr/lib/libsocket      library containing socket routines

       /usr/lib/libnsl         library containing network functions

       /usr/lib/libelf         library containing routines to process ELF object files

       /usr/lib/libaio         library containing asynchronous I/O routines

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWscpu                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       ld(1), a.out(4), attributes(5)

SunOS 5.10                                                          1 Feb 1995                                                            lint(1B)