shell 判断文件是否是可执行文件

测试变量指定的文件是否存在且是可执行文件。如果存在且是可执行文件,则执行该文件,否则通过chmod命令赋予该文件可执行权限。

//test.sh

#!/bin/bash
echo "enter the name:"
read filename
if test -x $filename ; then
./$filename
else
sudo chmod +x $filename
ls -l $filename
fi

  //sss.sh

#!/bin/bash

echo "What is your favourite OS?"
select var in "Linux" "Gnu Hurd" "Free BSD" "Other"; do
  break;
done
echo "You have selected $var"

运行

./test.sh

输出:

enter the name:
sss.sh
-rwxrwxr-x 1 f f 0 Dec  7 06:59 sss.sh

再次运行

./test.sh

输出

enter the name:
sss.sh
What is your favourite OS?
1) Linux
2) Gnu Hurd
3) Free BSD
4) Other
#? 1
You have selected Linux

原文地址:https://www.cnblogs.com/sea-stream/p/10085789.html