****Setting PATH:


Here is one example of path selection that everyone should be using:

PATH=.:/usr/bin:/usr/sbin:/p/gcc-2.8.1:/p/gnu:/p/perl:/p/gdb-4.17/bin:/usr/local/bin:/usr/ccs/bin:/usr/ucb/:/usr/openwin/bin:/usr/openwin/

To make this your own path, find out what shell you are running. Do this by going into a terminal (console) window and typing ps. One of tcsh, csh, sh, ksh, or bash should appear. This will tell you which initiation file to modify, if you are running tcsh, then your initiation file is .tcshrc (just add a period at the start, and rc at the end). In this file, there should (but may not be) a line like the one below:

     set path=( . /usr/bin\
               /usr/sbin /p/gcc-2.8.1 /p/gnu /p/perl \
               /p/gdb-4.17/bin /usr/local/bin\
               /usr/ccs/bin /usr/ucb/ /usr/openwin/bin /usr/openwin/\
              )
Make sure you add the current directory, . into your path as the above. 
Add this path selection, and make sure the order is correct. The next time you login, if you type env, you should see your path, and it should be the one above. If you have trouble doing this, please come see me during office hours, or email me for another appointment.



****Setting MANPATH:

setenv MANPATH /usr/local/man:$MANPATH

or

you can edit your shell script file ( if your shell is csh, your shell script file is .cshrc ) with the above command.



****Here is my .tcshrc file as an example.


#This is a start up script for the tcsh (t-shell) program. 
#It sets your path, prompt and other useful aliases

#Man pages:  The online manuals are here
    setenv MANPATH /usr/man:/usr/local/man

#News: This is useful for news readers
    setenv NNTPSERVER    "usenet.ins.cwru.edu"
    setenv NAME          $USER
    setenv ORGANIZATION "Computer Engineering and Science, CWRU, Cleveland OH."
    setenv DOMAINNAME   "ces.cwru.edu"

#Open Windows:  This is where all the open windows stuff is kept
    setenv OPENWINHOME  /usr/openwin
    setenv MANPATH      $OPENWINHOME/man:$MANPATH


#Netscape: Netscape needs to know where this directory is
    setenv XNLSPATH /usr/lib/X11/nls

#This tells the shell to keep track of previous commands
    set history=300 savehist=100   

set LD_LIBRARY_PATH=(/usr/lib: \
			/usr/openwin/lib/X11:/usr/ucblib: \
			/usr/openwin/lib:/appl/SUNWmotif/lib \
			/usr/local/X11/lib: \
		    )

#This sets the paths which the shell will search for commands

set path=( . /usr/bin\
               /usr/sbin /p/gcc-2.8.1 /p/gnu /p/perl \
               /p/gdb-4.17/bin /usr/local/bin\
               /usr/ccs/bin /usr/ucb/ /usr/openwin/bin /usr/openwin/ \
	      /p /p/www /p/jdk-1.1.6 /p/jdk-1.1.6/bin /p/ssh \
	      $LD_LIBRARY_PATH \
              /usr/bin/X11 \

              )


# Aliases: The following aliases do useful stuff

alias setprompt  'set prompt="`hostname`:$PWD> "'      # To set your prompt
setprompt
alias cd 'chdir \!* && setprompt'
#alias cd 'cd \!* ; echo ]2\;$cwd' 
alias rm rm -i                       # You don't want to accidently erase files
alias mv  'mv -i'                    # Don't accidently overwrite files
limit coredumpsize 0k                # prevent the creation of core files


# Optional aliases: You decide whether you want to keep any of these aliases
alias cls clear                      # To clear your screen,  ^L will also work
alias dir 'pwd;ls -l'                # If you like the DOS command
alias library 'telnet catalog'       # Contact the CWRU library catalog
alias rn  'rn -m=s -M -q'            # Set some default read news options

alias vt100 setenv TERM vt100        
alias new 'frm | tail'                # Use new to check if you have new mail
alias phonenumber  'whois -h whois'   # Use phonenumber <name> to search the  
                                      # campus directory
alias psv 'ps -aux|grep -v root|sort' # To check the process running on your 
                                      # machine

alias m more
alias h head
alias k9 'kill -9'   # To kill processes
alias l 'ls -l'
alias qt 'quota -v ' # Check your disk quota




--------------------------------------------------------------------------------
Changing shells:

Ex) changing to tcsh
passwd -e nis -r /bin/tcsh

There are 5 basic supported shells in our UNIX system, and which one you choose should not greatly affect the assignments in any way. I personally use tcsh (T-Shell), and I believe the default is csh (C-Shell), which is very useful. If you have used UNIx before, or if you have read about UNIX and would prefer another shell, such as Bash, enter passwd -r nis -e, and you will have to enter your password, and then a shell directory, each one of which is listed below:
/bin/sh
/bin/csh (C-Shell... default)
/bin/tcsh (T-Shell)
/bin/ksh (Korn shell... )
/bin/bash (Bash Shell)