/dev/null

When I type find . -type d -name "foo" command I get Permission denied error messages. How do I exclude all “permission denied: messages from the find command under Linux or Unix like operating systems?

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Q. How do I find out if all host computers on the LAN are alive or dead from a Linux or Windows XP computer? My network subnet range is 192.168.1.0/24 and I’m using dual boot Debian Linux / XP SP2 computer.

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Q. I’m using CentOS Linux server and how do I clear bash history in UNIX / Linux / BSD operating systems? A. Type the following command to clear your bash history: >~/.bash_history Another option is link ~/.bash_history to /dev/null: ln -sf /dev/null ~/.bash_history

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