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Full Discussion: How to get redirected filename inside unix script
Top Forums UNIX for Dummies Questions & Answers How to get redirected filename inside unix script Post 302451970 by cjcox on Wednesday 8th of September 2010 06:34:16 PM
Old 09-08-2010
Probably no good portable way across *ix. But if you have lsof you can use the pid of the current running process (stored as $$) and do something like:

Code:
lsof -p $$ -a -d 1

That says find open files for the current process and (-a) only those associated with file descriptor 1.

Just one soln (maybe)...
Last edited by Scott; 09-08-2010 at 07:40 PM.. Reason: Added code tags
 

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LEARN ABOUT CENTOS

pldd

PLDD(1)                                                          Linux User Manual                                                         PLDD(1)

NAME

       pldd - display dynamic shared objects linked into a process

SYNOPSIS

       pldd pid
       pldd option

DESCRIPTION

       The  pldd  command  displays a list of the dynamic shared objects that are linked into the process with the specified process ID.  The list
       includes the libraries that have been dynamically loaded using dlopen(3).

OPTIONS

       -?, --help
              Display program help message.

       --usage
              Display a short usage message.

       -V, --version
              Display the program version.

EXIT STATUS

       On success, pldd exits with the status 0.  If the specified process does not exist, the user does not have permission to access its dynamic
       shared  object  list, or no command-line arguments are supplied, pldd exists with a status of 1.  If given an invalid option, it exits with
       the status 64.

VERSIONS

       pldd is available since glibc 2.15.

CONFORMING TO

       The pldd command is not specified by POSIX.1.  Some other systems have a similar command.

NOTES

       The command

           lsof -p PID

       also shows output that includes the dynamic shared objects that are linked into a process.

       The gdb(1) info shared command also shows the shared libraries being used by a process, so that one can obtain similar output to pldd using
       a command such as the following (to monitor the process with the specified pid):

           $ gdb -ex "set confirm off" -ex "set height 0" -ex "info shared" 
                   -ex "quit" -p $pid | grep '^0x.*0x'

BUGS

       Since glibc 2.19, pldd is broken: it just hangs when executed.  It is unclear if it will ever be fixed.

EXAMPLE

       $ echo $$               # Display PID of shell
       1143
       $ pldd $$               # Display DSOs linked into the shell
       1143:     /usr/bin/bash
       linux-vdso.so.1
       /lib64/libtinfo.so.5
       /lib64/libdl.so.2
       /lib64/libc.so.6
       /lib64/ld-linux-x86-64.so.2
       /lib64/libnss_files.so.2

SEE ALSO

       ldd(1), lsof(1), dlopen(3), ld.so(8)

COLOPHON

       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU                                                                 2017-09-15                                                             PLDD(1)
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