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Top Forums Shell Programming and Scripting Why does my /bin/csh take longer than /bin/perl? Post 302275846 by acheong87 on Monday 12th of January 2009 10:15:16 AM
Old 01-12-2009
csh is already my default shell. If I'm running csh scripts, are all of those files (/etc/csh.cshrc, /etc/csh.login, $HOME/.cshrc, $HOME/.login, $HOME/.tcshrc, $HOME/.history) still processed? If so, that explains it. The .cshrc file is huge.

How can I make csh skip those files? You see, csh is the default shell at my company, and the .cshrc is necessary because it sets up a lot of environment variables for our software. I can't remove the .cshrc... so can I skip it?
 

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getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME
getusershell, setusershell, endusershell - get legal user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as defined by the system manager in the file /etc/shells. If /etc/shells does not exist, the following locations of the standard system shells are used in its place: /bin/bash /bin/csh /bin/jsh /bin/ksh /bin/pfcsh /bin/pfksh /bin/pfsh /bin/sh /bin/tcsh /bin/zsh /sbin/jsh /sbin/pfsh /sbin/sh /usr/bin/bash /usr/bin/csh /usr/bin/jsh /usr/bin/ksh /usr/bin/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/bin/zsh /usr/xpg4/bin/sh The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells. The setusershell() function rewinds the file or the list. The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells. RETURN VALUES
The getusershell() function returns a null pointer on EOF. BUGS
All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved. SunOS 5.10 30 Aug 2004 getusershell(3C)
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