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Sort by M display memory consumption order
Press p to display the sequence of CPU consumption
L Toggle Display average load and start time information.
m toggles display memory information.
T toggles the display of process and CPU status information.
The C toggle displays the command name and the full command line.
M sorts based on the size of the resident memory.
P is sorted according to the percentage size of CPU usage.
T is sorted by time/accumulated time.
W writes the current settings to the ~/.TOPRC file.
IP Addr Show
IP Route Show
Cat/etc/resolv.conf
Device=eth0
Bootproto=none
Onboot=yes
ipaddr=192.168.0.1
ntmask=255.255.255.0
gateway=192.168.0.254
Basic Format:
* * * * * command
Time- sharing weekly command
The 1th column represents minutes 1~59 per minute with * or */1
The 2nd column represents the hour 1~23 (0 means 0 points)
The 3rd column represents the date 1~31
The 4th column represents the month 1~12
5th Column Identification Number Week 0~6 (0 = Sunday)
6th List of commands to run
Some examples of crontab files:
* * * * * /usr/local/etc/rc.d/lighttpd Restart
The above example shows that 21:30 restarts Apache per night.
4 1,10,22 * */USR/LOCAL/ETC/RC.D/LIGHTTPD restart
The above example shows that 4:45 restarts Apache on the 1, 10, and 22nd of the month.
1 * * 6,0/usr/local/etc/rc.d/lighttpd restart
The above example shows that 1:10 restarts Apache every Saturday and Sunday.
0,30 18-23 * * */usr/local/etc/rc.d/lighttpd restart
The above example shows that Apache restarts every 30 minutes from 18:00 to 23:00 every day.
0 * * 6/usr/local/etc/rc.d/lighttpd restart
The above example shows the restart of Apache every Saturday at 11:00am.
* */1 * * * */usr/local/etc/rc.d/lighttpd restart
Restart Apache every hour
* 23-7/1 * * * */usr/local/etc/rc.d/lighttpd restart
from 11 o'clock to 7 in the morning, restart Apache every hour .
0 4 * mon-wed/usr/local/etc/rc.d/lighttpd restart
4th per month with 11-point restart from Monday to Wednesday Apache
0 4 1 Jan */usr/local/etc/rc.d/lighttpd restart
4-point restart of Apache on January 1
Name: Crontab
usage rights: All users
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