shell常用操作积累

1. 拼接字符串*

#!/bin/sh

write_log(){
    local up_name=$
    local num=${#string}

    while [ $num -le  ]; do
        up_name="$up_name*"
        num=$(($num + ))
    done
    echo $up_name
}

write_log "wang"

输出：

wang*****************************************************************************************************************************************************************************************************************************************************************