[root@jiangbo ~]# crontab -u root -l

no crontab for root

[root@jiangbo ~]# crontab -u root -e

no crontab for root - using an empty one

crontab: installing new crontab

[root@jiangbo ~]# crontab -u root -l

*/ * * * * ls >> /tmp/ls.txt

[root@jiangbo ~]# 

<?php

$myfile = fopen("/var/www/html/newfile.txt", "a+");//这里写相对路径不行

//or die("Unable to open file!!");

$txt = "Bill Gates\n";

fwrite($myfile, $txt);

$txt = "Steve Jobs\n";

fwrite($myfile, $txt);

fclose($myfile);

?>

[root@jiangbo ~]# /etc/init.d/mysqld start

Another MySQL daemon already running with the same unix socket.

正在启动 mysqld：                                          [失败]

[root@jiangbo ~]# /etc/init.d/mysqld start

正在启动 mysqld：                                          [确定]

[root@jiangbo ~]#