Unix Tech notes URLS !!!

1> NFS FAQ
 http://nfs.sourceforge.net/
http://www.cs.bgu.ac.il/~arik/usail/man/sunos/fstab.5.html
http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch29_:_Remote_Disk_Access_with_NFS#.UdVIyDv0FsM



1>
How to clear Memory Cache on Linux:-
http://www.unixmen.com/how-to-clear-memory-cache-on-linux-servers/



nfs filesystem on my Linux machine without doing a reboot.

Finally to resolve failing nfs mount issue i commented the entry in /etc/mtab file :

http://www.linux-consulting.com/Amd_AutoFS/autofs-5.html

http://ramblings.narrabilis.com/umount-nfsvers3

Open the vsftpd.conf file, enter:
# vi vsftpd.conf

Find line that read as follows
listen_port=21

Replace port 21 with new port such as 201:
listen_port=201

Save and close the file. Please make sure no other service is using port # 201. Finally, restart the vsftpd server:
# /etc/init.d/vsftpd restart
OR
# service vsftpd restart

All ftp client need use the tcp port # 201 while connecting to the ftp server. For example:
$ ftp ftp.cyberciti.biz 201

Starting and stopping the automounter

 --- --- WARNING: do NOT stop the automount daemon if you have any directories --- automounted at the time such as /home, /var/spool/mail, etc --- --- autofs daemon will not reload nor restart itself...therefore no --- new filesystems, partitions can be mounted... 

 To stop the daemon root# /etc/rc.d/init.d/autofs stop To start the daemon root# /etc/rc.d/init.d/autofs start To stop and start the daeon with one command root# kill -HUP "pid_of_the_autofs_daemon" ( automount ) Check the log files and the status of the autofs automounter root# /etc/rc.d/init.d/autofs status root# cat /etc/mtab root# df root# showmount -e root# tail -100 /var/log/messages 

1. System Startup and Initialization:

http://docstore.mik.ua/orelly/linux/run/ch05_03.htm   :

Take a look in one of those directories; you will see a number of filenames of the form Snnxxxx or Knnxxxx where nn is a number from 00 to 99, and xxxx is the name of some system service. The scripts whose names begin with K are executed by /etc/rc.d/rc first to kill any existing services, then the scripts whose names begin with S are executed to start new services.