实例详解Linux 中的命令链接操作符

eg:cat test.sh #!/bin/bash[ -e /etc/hosts ] && echo "ok" || echo "fail"bash test.sh okeg:cat test.sh #!/bin/bash[ -e /etc/hostssssss ] && echo "ok" || echo "fail"bash test.sh fail注意这里 && 必须在 || 之前

[ -f /home/tecmint/Downloads/xyz1.txt ] || {touch /home/tecmint/Downloads/xyz.txt; echo "The file does not exist"}“The file does not exist”