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Top Forums Shell Programming and Scripting identify function
# 8  
Old 04-04-2006
Did they mean ctags?
Some development environments (IDE's) for Linux have that kind of thing. It's a pane with all of the functions listed.

www.freshmeat.net and search for C or C++ IDE. They work only under a given windowing environment, e.g. gnome, kde....

Also UltraEdit, which runs under Windows, will show a window that lists all of the functions in a given C file. You can download a demo version, and use it to look at the source file(s) you want to check.

www.ultredit.com

I think what those folks are talking about is nm. nm lists all of the symbols in a compiled C binary, if it has not been stripped. It also lists all of the external entry points, all of the global variables. I have never seen one that does this for C source.

They may also mean ctags - this creates an index file of functions. The somewhat human readable file is usually just called tags. Maybe you can use that. The first "column" is a list of functions, and you can write some perl or sed to extract the names.
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chsh

CHSH(1) 							   User Commands							   CHSH(1)

NAME

       chsh - change your login shell

SYNOPSIS

       chsh [-s shell] [-l] [-u] [-v] [username]

DESCRIPTION

       chsh is used to change your login shell.  If a shell is not given on the command line, chsh prompts for one.

       chsh is used to change local entries only. Use ypchsh, lchsh or any other implementation for non-local entries.

OPTIONS

       -s, --shell shell
	      Specify your login shell.

       -l, --list-shells
	      Print the list of shells listed in /etc/shells and exit.

       -u, --help
	      Print a usage message and exit.

       -v, --version
	      Print version information and exit.

VALID SHELLS

       chsh  will  accept  the full pathname of any executable file on the system.  However, it will issue a warning if the shell is not listed in
       the /etc/shells file.  On the other hand, it can also be configured such that it will only accept shells listed in this	file,  unless  you
       are root.

EXIT STATUS

       Returns 0 if operation was successful, 1 if operation failed or command syntax was not valid.

SEE ALSO

       login(1), passwd(5), shells(5)

AUTHOR

       Salvatore Valente <svalente@mit.edu>

AVAILABILITY

       The chsh command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux							     July 2009								   CHSH(1)