Start rescue 1.Check and Note backup start time # date 2. Insert Red Hat Enterprise Linux 4 AS(Update5) installation CD into CD-ROM 3. Reboot # shutdown -r now 4. After reboot, type “linux rescue” (start rescue) and press enter key in prompt on the screen below. boot:linux rescue 5. A screen to choose language is […]
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#!/bin/sh ########################################## # # SYSTEM NAME : # SUBSYSTEM : # SHELL_NAME : BAK_***backup.sh # FUNCTION : backup OS image for **** # USAGE : SYSTEM Backup # CALLED BY : NONE # CALL TO : NONE # RETURNS : 0=OK, 1=NG # DESCRIPTION : backup OS image for **** # HISTORY : # 2009/04/10
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Start rescue 1.Check and Note backup start time # date 2. Insert Red Hat Enterprise Linux 4 AS(Update5) installation CD into CD-ROM 3. Reboot # shutdown -r now 4. After reboot, type “linux rescue” (start rescue) and press enter key in prompt on the screen below. boot:linux rescue 5. A screen to choose language is
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One method to move filesystems around, particularly if you are moving your root filesystem, is to use dump. Dump is a lower level backup program than tar, but this also makes dump quicker, because it doesn’t have all of the overhead. Another advantage is that depth of directories, symlinks, etc. aren’t a big deal. In
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If you don’t want to take any chances with your data, it is recommended that you backup hard disk partition table. Last Friday I was discussing some issues with one of our customer and he pointed out me dd command. Backup MBR with dd command dd the old good command which now backup partition tables
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Red Hat Enterprise Linux 4.6 and 5.0 introduced /proc/sys/vm/drop_caches, which allows the pagecache and slabcache to be cleared on demand. To free the pagecache: # sync; echo 1 > /proc/sys/vm/drop_caches To free dentries and inodes: # sync; echo 2 > /proc/sys/vm/drop_caches To free pagecache, dentries and inodes: # sync; echo 3 > /proc/sys/vm/drop_caches It is
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List top 5 files or directory Using your disk space in current dir #du -hsx * | sort -rh | head -5 List top 10 files or directory Using your disk space in current dir #du -hsx * | sort -rh | head -10 List top files or directory Using your disk space in current
Unix list top 5 files or directory Using your disk space in current dir Read More »
It’s not often you need a USB spy camera, but when you do, this is a quick and easy method. The setup is putting a USB camera into your your pocket then running the camera from your laptop stuffed in a computer bag. The situation reminds me of a perfect setup for college days where
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Use the following steps to change the TCP/IP timeout value for your computer. On AIX, run the following command: no -o tcp_keepinit=<timeout_value> where <timeout_value> is the length of the timeout period, in half seconds. To configure a timeout of 30 seconds, set the <timeout_value> value to 60. On Solaris and HP-UX, run the following command:
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The Universally Unique Identifier can be used to identify a device independent form its mount point or device name. This is more and more important as many devices today support hot-plugging or are external anyway. Therefore it makes sometimes sense to access a device (for example in fstab) not by device name but by the
How to Get UUID of Hard Disks and Mount using UUID in Linux Read More »