Shell 大小写
tags: 艺术
文章目录
1. Shell 大写转小写
$ cat test ABC
convertlowercase.sh
#!/usr/bin/env bash echo -n "Enter File Name: " read -r file if [ ! -f "$file" ]; then echo "Filename $file does not exists" exit 1 fi tr '[:upper:]' '[:lower:]' < "$file"
执行：
$ bash convertlowercase.sh Enter File Name: test abc
