shell脚本学习(一)

#!/bin/bash
#echo "hello!"

[zyc@localhost shell]$ ./shell.sh
-bash: ./shell.sh: Permission denied
[zyc@localhost shell]$ ll
total 4
-rw-rw-r--. 1 zyc zyc 26 Jun  7 01:33 shell.sh
[zyc@localhost shell]$ chmod +x shell.sh
[zyc@localhost shell]$ ll
total 4
-rwxrwxr-x. 1 zyc zyc 26 Jun  7 01:33 shell.sh