my bashrc

PS1='$'alias s='source ~/.bashrc'alias gcc='gcc -std=c99'alias bk='cp -a c/theCProgrammingLanguage/*  ~/data/ex.bak/'alias df='df -h'alias du='du -h' alias whence='type -a'                        # where, of a sortalias grep='grep --color'                     # show differences in colouralias egrep='egrep --color=auto'              # show differences in colouralias fgrep='fgrep --color=auto'              # show differences in colour alias dir='ls --color=auto --format=vertical'alias vdir='ls --color=auto --format=long'alias ll='ls -l'                              # long listalias ls='ls -h --color=tty'                  # classify files in colouralias la='ls -A'                              # all but . and ..alias l='ls -CF'                              #alias wch='which -a'alias vi='gvim'alias vim='gvim'alias cpanm='perl ~/bin/.cpanm  --force --local-lib=~/perl5 local::lib'alias perlmod='perl ~/bin/findModule.pl'alias ctags='/home/leizhou/ctags/ctags'