What are the FORWARD policy and NAT Rules?
Most organizations are allotted a limited number of publicly routable IP addresses from their ISP. Due to this limited allowance, administrators must …
Starting a Kickstart Installation
To begin a kickstart installation, you must boot the system from a Red Hat Linux boot diskette, Red Hat Linux boot CD-ROM, …
One-Step Tutorial: Getting started with LAM
Booting LAM The user creates a file listing the participating machines in the cluster. shell$ cat lamhosts # a 2-node LAM node1.cluster.example.com …
Vi : Search and Replace
Change to normal mode with escape key. Search: Search STRING forward : /STRING Search STRING backward: ?STRING. Repeat search: n Repeat search …
/etc/fstab
## 編輯 /etc/fstab 檔案 /dev/sda1 /mnt/usbdrive ext3 noauto,user,kudzu 0 0 # 使用外接usb.讓其他使用者可以自由掛載(mount) USB硬碟 /dev/sda2 /mnt/dos vfat users,umask=000 0 0 # 讓其他使用者有權限寫入,掛載 Windows …
Preparing for a Network Installation
Note Make sure an installation CD (or any other type of CD) is not in your hosting partition’s drive if you are …
Howto reconstruct RAID 1
[root@localhost Desktop]# rpm -q raidtools raidtools-1.00.3-8 [root@localhost Desktop]# lsraid -p [dev 9, 0] /dev/md0 30820DF2.C88E49A4.8199EFC8.5B50C228 online [dev 8, 1] /dev/sda1 30820DF2.C88E49A4.8199EFC8.5B50C228 good …
Sending mail with attachment
mutt -s “the subject” -a attachment.zip who@gmail.com < messages.txt Link : nixCraft
watch command
[root@localhost ~]# watch Usage: watch [-dhntv] [–differences[=cumulative]] [–help] [–interval=] [–no-title] [–version] examples: # watch –interval=0.1 cat /proc/mdstat
Linux Notes – hosts
/etc/hosts.allow in.telnetd: 61.221.117.242/255.255.255.0, 163.26.198.1, .funny.net.tw : Allow in.proftpd: 61.221.117.242/255.255.255.0, 163.26.198.1, .funny.net.tw : Allow /etc/hosts.deny in.telnetd: ALL : Deny in.proftpd: ALL : Deny