Bash 脚本命令在 cron 中不起作用
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Bash script commands not working in cron
提问by Tarek Sawah
I have the following bash script to read logs and check for brute force then block violating IP using iptables.
我有以下 bash 脚本来读取日志并检查蛮力，然后使用 iptables 阻止违反 IP。
#!/bin/bash
#blah blah run some commands to get the IP
iptables -A INPUT -s $p -j REJECT --reject-with icmp-host-prohibited
echo "BANNED $p FOR $COUNT ATTEMPTS" |wall
I did chmod 755. When I run the command from terminal it works fine. But when I setup a cronjob using crontab -eas root, it gets the IP and echos the "BANNED ..." message to the wall but nothing is added to the iptables list.
我做了 chmod 755。当我从终端运行命令时，它工作正常。但是，当我crontab -e以 root 身份设置 cronjob 时，它会获取 IP 并将“BANNED ...”消息回显到墙上，但没有向 iptables 列表添加任何内容。
PS. I tried both #!/bin/bashand #!/bin/shbut no luck.
附注。我都试过#!/bin/bash，#!/bin/sh但没有运气。
回答by kpopovbg
Try to provide full path to iptables e.g.
尝试提供 iptables 的完整路径，例如
$ which iptables
/sbin/iptables
and than modify your script like that:\
而不是像这样修改你的脚本：\
#!/bin/bash
#blah blah run some commands to get the IP
/sbin/iptables -A INPUT -s $p -j REJECT --reject-with icmp-host-prohibited
echo "BANNED $p FOR $COUNT ATTEMPTS" |wall
回答by MLSC
Try the following solution should work for you:
尝试以下解决方案应该适合您：
cat cronjob
* * * * * /path/to/script.sh
Then:
然后：
chmod +x cronjob
chmod +x script.sh
/etc/init.d/crond start #redhat based servers like centos
/etc/init.d/cron start #debian based servers like ubuntu
crontab cronjob
NOTE: Sometimes you need to enter full path of IPTABLES command if your rules aren't added to /etc/sysconfig/iptables.
注意：如果您的规则没有添加到/etc/sysconfig/iptables.
