http://www.cyberciti.biz/tips This is a Linux sys admin journal by Vivek about sys admin work, Linux tips & tricks, hacks, news and more. Fri, 03 Feb 2012 22:45:35 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 http://www.cyberciti.biz/tips/faq-updates-nov132010.html http://www.cyberciti.biz/tips/faq-updates-nov132010.html#comments Fri, 13 Nov 2009 12:58:17 +0000 Vivek Gite http://www.cyberciti.biz/tips/?p=7436

Linux Network IP Accounting - I need to know how much data are transmitted on my ppp0 network or eth0 Internet links? How do I set IP accounting by address such as 123.1.2.3 and 123.1.2.4? How do I set IP accounting per Apache virtual domain? How do I set accounting by service port (http, smtp) and protocol (tcp, udp, icmp)? How do I record how much traffic each of the clients computer is using?

Linux / UNIX: DNS Lookup Command - How do I perform dns lookup under Linux or UNIX or OS X operating systems without using 3rd party web sites for troubleshooting DNS usage?

Linux: Find Out Which Process Is Listening Upon a Port - How do I find out running processes were associated with each open port? How do I find out what process has open tcp port 111 or udp port 7000 under Linux?

Google Apps Domain Create SPF Records For BIND or Djbdns - I work for a small business and outsourced our email hosting to Google. However, I noticed that spammers are using our From: First Last to send their spam messages. All bounced messages come to our catch only account. How do I stop this? How do I validate our domain using SPF? How do I configure a SPF for Google Apps domain using BIND 9 or djbdns? Mac Os X: Mount NFS Share / Set an NFS Client - How do I access my enterprise NAS server by mounting NFS filesystem onto my Mac OS X based system using GUI and command line based tools?

Explains: echo Command (echo $”string”) Double-quoted String Preceded By a Dollar Sign - I noticed that many shell scripts in /etc/init.d/ directory use the following syntax - echo $"Usage $prog start|stop|reload|restart". Why a double-quoted string preceded by a dollar sign ($”string”) using the echo command under Linux / UNIX bash scripts?

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]]> http://www.cyberciti.biz/tips/faq-updates-nov132010.html/feed 0 http://www.cyberciti.biz/tips/linux-networking-cookbook.html http://www.cyberciti.biz/tips/linux-networking-cookbook.html#comments Thu, 20 Dec 2007 10:19:17 +0000 Vivek Gite http://www.cyberciti.biz/tips/linux-networking-cookbook.html Building Custom Gateways using Soekris 4521 embedded board => Linux Firewall [...]]]> http://www.cyberciti.biz/tips/linux-networking-cookbook.html/feed 0 http://www.cyberciti.biz/tips/linux-shutdown-command-and-logfile.html http://www.cyberciti.biz/tips/linux-shutdown-command-and-logfile.html#comments Mon, 26 Sep 2005 02:08:00 +0000 Vivek Gite http://www.cyberciti.biz/tips/linux-shutdown-command-and-logfile.html In the enterprise Linux setup, it is necessary to keep the track of server shutdown and reboot time. Most of you may have used the shutdown / reboot command.]]> http://www.cyberciti.biz/tips/linux-shutdown-command-and-logfile.html/feed 11