Em co van de the nay voi cron, mong duoc moi nguoi giup do:
1. Em co file shell killsn.sh noi dung nhu sau:
#!/bin/sh
s=$(ps -A | grep VirtualBox | head -c 5;)
x=$(($s+1-1))
if [ $x -gt 0 ]
then
kill $x
fi
Chuong trinh nay co the lay ID cua VirtualBox roi sau do giet no neu no
dang chay.
Sau do, em them dong nay vao crontab (bang cach chay crontab -e):
30-59 * * * * /home/hungdc/killsn.sh
Muc dich cua em la giet VirtualBox trong khoang thoi gian tu phut 30 den
59 neu no dang chay.
Den day thi tat ca deu OK. VirtualBox bi giet dung nhu y em.
2. Bay gio em them vao crontab dong nay (van bang cach chay crontab -e):
4 * * * * /usr/bin/thunderbird
Thi doi moi ca mat cha thay thunderbird chay gi ca. Em da thay 4 bang du
cac so khac nhau, thay //usr/bin/thunderbird/ bang /thunderbird/ hay
/hungdc thunderbird/ roi /root thunderbird/, cac chuong trinh khac
(pidgin, skype), van van va van van. Tom lai deu khong duoc. Em cung sua
ca trong //etc/crontab/, khong duoc van hoan khong duoc. Khong hieu
system cua em lam sao ma no dan the khong biet!
Mong cac bac chi giao.
Thanks nhieu.
