查看“Wiki异地备份脚本”的源代码



=脚本主体=
<pre>
#!/bin/bash
#run on root user  file name tran
#var 
#on freebsd yesterday
TODAY=`date -v -1d +%Y%m%d`

#on linux 
#TODAY=`date +%Y%m%d`
#TODAY=`date -d '1 days ago'  +%Y%m%d` #yesterday
#20180813

#显示前一天为
#DATE1=`date -d '1 days ago' +%Y%m%d` 加-d参数可以设置与当前日期的计算时间，同样，前2天为'2 days ago'，去掉ago则为当前日期之后多少天

rsync -avz   /data/www/wiki.linuxchina.net/  /home/evan/wiki/
cp  -a /data/backup/wikilinuxchina_${TODAY}.sql.gz /home/evan/

sleep 4
chown -R evan:evan  /home/evan

su - evan -c "rsync -avz  /home/evan/wiki/   evan@45.77.26.20:~/wikibak/"
su - evan -c "rsync -avz  /home/evan/wikilinuxchina_${TODAY}.sql.gz  evan@45.77.26.20:~/wikibak/"

rm -f /home/evan/wikilinuxchina_${TODAY}.sql.gz

#10  20  * * * /bin/bash /data/mon/tran  2>&1 >/dev/null
</pre>

=知识点=
shell脚本中使用其他用户执行脚本
 su - root -c "ls -l /root"
<pre>
Warning: Permanently added '119.23.28.89' (RSA) to the list of known hosts.
root@119.23.28.89's password: 
bash: rsync: command not found
rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: remote command not found (code 127) at io.c(226) [Receiver=3.1.2]

原因server 没有安装rsync</pre>

=see also=
[https://www.cnblogs.com/bodhitree/p/6018369.html 其他用户身份运行程序—— su、sudo、runuser]

[https://www.cnblogs.com/bigben0123/archive/2013/05/07/3064843.html shell脚本中使用其他用户执行脚本]

[https://blog.csdn.net/ljx0305/article/details/4278836 FreeBSD下取得昨天日期的方法]

[[category:shell]] [[category:ops]]