Someone

PATH1=/sbin:/usr/sbin:/usr/local/sbin
PATH2=/bin:/usr/bin:/usr/local/bin
PATH3=/usr/games:/usr/local/games
PATH4=/usr/bin/X11:~/bin
 PATH=$PATH1:$PATH2:$PATH3:$PATH4
  PS1='\u@\h:\w\$ '

eval    `dircolors`
alias   ls='ls --color=auto '
export  PATH  PS1
umask   022


#iteration
for i in /etc/profile.d/*.sh ; do
    if [ -r "$i" ]; then
        . $i
    fi
done