jiangtao

#!/bin/bash #program: #       this program get max long user name and min long user name #history: #2017.03.07                    first release #PATH=/bin:/sbin:/user/bin:user/sbin:/user/local/bin:/user/local/sbin:~bin export PATH for username in $(cut -d ':' -f1 /etc/passwd) do     if [ ${#minname} -eq 0 -o ${#username} -lt ${#minname} ] ;then         minname=$username     fi     if [ ${#username} -gt ${#maxname} ] ;then         maxname=$username     fi done