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cron 脚本找不到 logwatch 和 chkrootkit

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cron 脚本找不到 logwatch 和 chkrootkit

我有一个可能与变量有关的问题PATH。

这是我收到的一封电子邮件，其中包含关于 cron 中运行的脚本的错误：

Cron Daemon <mail.org>

    05:08 (15 hours ago)

    to root, bcc: me
    mail: Null message body; hope that's ok
    tar: Fjerner indledende '/' fra medlemsnavne
    mail: Null message body; hope that's ok
    /home/user/bin/checkSystem: linje 16: chkrootkit: command not found
    mail: Null message body; hope that's ok
    /home/user/bin/checkSystem: linje 21: logwatch: command not found
    /home/user/bin/checkSystem: linje 22: logwatch: command not found
    /home/uesr/bin/checkSystem: linje 23: logwatch: command not found
    mail: Null message body; hope that's ok
    mail: Null message body; hope that's ok
    mail: Null message body; hope that's ok

我刚刚将脚本的所有者从 user 更改为 root

$ls -sail /home/user/bin/checkSystem 
541784 4 -rwxr-x--- 1 root root 1235 aug 23 14:05 /home/user/bin/checkSystem

crontab -e

 1 # Edit this file to introduce tasks to be run by cron.
 2 #
 3 # Each task to run has to be defined through a single line
 4 # indicating with different fields when the task will be run
 5 # and what command to run for the task
 6 #
 7 # To define the time you can provide concrete values for
 8 # minute (m), hour (h), day of month (dom), month (mon),
 9 # and day of week (dow) or use '*' in these fields (for 'any').#
10 # Notice that tasks will be started based on the cron's system
11 # daemon's notion of time and timezones.
12 #
13 # Output of the crontab jobs (including errors) is sent through
14 # email to the user the crontab file belongs to (unless redirected).
15 #
16 # For example, you can run a backup of all your user accounts
17 # at 5 a.m every week with:
18 # 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
19 #
20 # For more information see the manual pages of crontab(5) and cron(8)
21 #
22 # m h  dom mon dow   command
23 0 5 * * 1 /home/user/bin/checkSystem

这是脚本：

#!/bin/bash
 2 date=`date +%d-%m-%y`
 3 mail="mail.org"
 4
 5 ## rkhunter
 6 #rkhunter --update
 7 rkhunter --checkall --cronjob --report-warnings-only > rkhunter-check-$date.log
 8 mail -A rkhunter-check-$date.log -s "rkhunter-check" $mail < /dev/null 2>&1
 9 rm rkhunter-check-$date.log
10 tar -cf rkhunter-log-$date.tar /var/log/rkhunter.log
11 gzip rkhunter-log-$date.tar
12 mail -A rkhunter-log-$date.tar.gz -s "rkhunter-log" $mail < /dev/null 2>&1
13 rm rkhunter-log*.tar.gz
14
15 ## chkrootkit
16 chkrootkit > chkrootkit-$date.log
17 mail -A chkrootkit-$date.log -s "chkrootkit" $mail < /dev/null 2>&1
18 rm chkrootkit-$date.log
19
20 ## logwatch
21 logwatch --output html --detail High --range All > logwatch-all-$date.html
22 logwatch --output html --detail High --range Today > logwatch-today-$date.html
23 logwatch --output html --detail High --range Yesterday > logwatch-yesterday-$date.html
24 mail -A logwatch-all-$date.html -s "logwatch all" $mail < /dev/null 2>&1
25 mail -A logwatch-today-$date.html -s "logwatch today" $mail < /dev/null 2>&1
26 mail -A logwatch-yesterday-$date.html -s "logwatch yesterday" $mail < /dev/null 2>&1
27 rm -f logwatch-*.html
28
29 ## testing command
30 #echo "Just testing my sendmail gmail relay" | mail -s "Sendmail gmail Relay" mail.org

这是怎么回事？

编辑：

(root@host)-(20:39:01)-(/home/user)
$which logwatch
/usr/sbin/logwatch
(root@host)-(20:39:06)-(/home/user)
$which chkrootkit
/usr/sbin/chkrootkit
(root@host)-(20:39:16)-(/home/user)
$which rkhunter
/usr/bin/rkhunter
(root@host)-(20:39:22)-(/home/user)
$

答案1

当 cronjob 运行时，找不到“logwatch”。由于安装了 logwatch，这可能意味着路径中缺少它。您可以通过将“/usr/sbin”添加到 /etc/crontab 文件中的 PATH 来解决此问题。

如果您没有编辑 /etc/crontab 的权限，解决此问题的另一种方法是直接在脚本中使用可执行文件的完整路径。

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