Basic types of Unix shell

• Bourne shell (sh)
• C shell (csh)
• TC shell (tcsh)
• Korn shell (ksh)
• Bourne Again SHell (bash)

If that's not the case, next time you got a command that you're not sure
about (from a script for example), paste it to explainshell.com. It may
be quicker to learn shell this way.




Ref: http://unixhelp.ed.ac.uk/shell/oview2.html

C shell basic

The C Shell recognizes the following operators, in order of precedence.

     ()       - parenthesis - change order of evaluation
     -        - unary minus/negation
     ~        - one's complement
     !        - logical negation
     %        - remainder
     /        - divide
     *        - multiply
     -        - subtract
     +        - addition
     >>       - shift right
     <<       - shift left
     >        - greater than
     <        - less than
     >=       - greater than or equal
     <=       - less than or equal
     !=       - not equal to (strings)
     ==       - equal to (strings)
     &        - bitwise AND 
     ^        - bitwise exclusive OR
     |        - bitwise inclusive OR
     &&       - logical AND
     ||       - logical OR

Ref: 1 2

Colorize unix shell prompt

Color Prompts

BASH shell:
alias ll='/opt/sfw/bin/ls -althp --color=auto'

PATH=$PATH:/usr/local/new/aps2/MSC_R-14-1_U/bin:$HOME/workspace/doPERL:$HOME/bin

alias toolbox='toolbox-MSC_R-14 &'
alias goplex='cd /home/xviengu/workspace/doPLEX/'
alias goperl='cd /home/xviengu/workspace/doPERL/'
alias gos37='ssh xviengu@seasx037.rnd.as.sw.ericsson.se'
alias gos74='ssh xviengu@seasx074.rnd.as.sw.ericsson.se'

alias pm='pm.pl'
alias pb='pb.pl'
alias csrv='csrv.pl'
alias cpf='cpf.pl'

#alias ana='ana.pl'
#alias gen='gen.pl'
#alias com='com.pl'
#alias pb='pb.pl'

if [ $CLEARCASE_ROOT ]; then
    export PS1='\e[0;31m[\u@\e[1;32m\h \e[0;36m`basename $CLEARCASE_ROOT` \e[0;35m${PWD#${PWD%/*/*/*}/}]\\$ \e[m';
else
    export PS1='\e[0;31m[\u@\e[1;32m\h \e[0;35m${PWD#${PWD%/*/*/*}/}]\\$ \e[m';
fi

VIMRUNTIME=$HOME/.vim;
export VIMRUNTIME

alias vim='/home/xviengu/bin/vim'
alias ctags='/home/xviengu/bin/ctags'
alias cscope='/home/xviengu/bin/cscope'


CSCOPE_EDITOR=$HOME/bin/vim;
export CSCOPE_EDITOR

CSCOPE_DB=$HOME/cscope/cscope.out;
export CSCOPE_DB

VPATH=$HOME/cscope:$HOME:.
export VPATH