shell个人常用函数定义：
alias utf8-to-gbk="iconv -cf utf8 -t gbk"
alias gbk-to-utf8="iconv -cf gbk -t utf8"
# @usage : find-content cpp content
find-content () { find ./ -name "*.$1" | xargs grep -n --color $2 ; }
find-file () { find ./ -name "*.$1" | grep "$2" | awk '{print "vi\t"$0}' ;}
gen-wget () { a=`hostname` b=`pwd`; echo "wget -r -nd "$a"$b"/$1 ;}
gen-pwd () { a=`pwd`; echo "$a/$1" ; }
gen-ftp () { hostname=`hostname` pwd=`pwd`; echo "ftp://$hostname:$pwd"/$1 ;}