[英]How can I match parameters in command line with one regular expression?
I have a script, and I want to forbid some commands in command line (shutdown, rm, init). 我有一个脚本,并且我想禁止命令行中的某些命令(关闭,rm,init)。 But it seems doesn´t work because it seems to match everything: How could I do that?
但这似乎不起作用,因为它似乎可以匹配所有内容:我该怎么做?
[root@devnull hunix]# cat p.sh
#!/bin/bash
string=$1;
if [[ "$string" =~ [*shut*|*rm*|*init*] ]]
then
echo "command not allowed!";
exit 1;
fi
[root@devnull hunix]# ./p.sh shutdown
command not allowed!
[root@devnull hunix]# ./p.sh sh
command not allowed!
[root@devnull hunix]# ./p.sh rm
command not allowed!
[root@devnull hunix]# ./p.sh r
command not allowed!
[root@devnull hunix]#
You're mixing up shell glob with regex. 您正在将Shell Glob与正则表达式混合在一起。
Correct regex is: 正确的正则表达式为:
if [[ "$string" =~ ^(shut|rm|init) ]]; then
echo "command not allowed!"
exit 1
fi
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