sed change entire line

Here I use sed to replace the entire 2nd line in a lot of files with a new 2nd line. The shell script: for fle in `ls *.msg` do # copy file first so as can keep permissions and ownership identical cp -p $fle test_$fle # replace entire 2nd line with a new 2nd line […]

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June 8, 2011

RAID internal hard disks linux

Useful commands to show RAID level of internal hard disks. On HP blade servers: /usr/sbin/hpacucli controller all show status /usr/sbin/hpacucli controller slot=0 logicaldrive all show On other servers: cat /proc/mdstat

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June 6, 2011