여니 블로그

vgchange -a n [VG Name]

vgexport [VG Name]

disk split

disk add

vgimport [VG Name]

vgchange -a y [VG Name]

vi 로 열어볼때

:set fileformat=unix

노트패드로 볼때

:set fileformat=dos

## drop cache
echo 1 > /proc/sys/vm/drop_caches
## drop inode/dentry
echo 2 > /proc/sys/vm/drop_caches

### reclaim cache
echo 1000~10000 > /proc/sys/vm/vfs_cache_pressure

vi /etc/sysctl.conf
  vm.vfs_cache_pressure=1000~10000
sysctl -p

#vi /etc/profile

function history_to_syslog {

declare CMD

CMD=$(history 1)

USER=`who am i`' : '$LOGNAME

logger -p local6.notice -- SESSION = $$, WHO = $USER, CMD = $CMD

}

trap history_to_syslog DEBUG

#vi /etc/rsyslog.conf

local6.notice        /var/log/history_cmd.log

#systemctl restart rsyslog

#vi /etc/logrotate.d/history_cmd

/vat/log/history_cmd.log

{

monthly

rotate 12

missingok

notifempty

create

postrotate

   systemctl restart rsyslog

endscript

}

#logrotate -f /etc/logrotate.d/history_cmd

참조 :  https://lklingling.tistory.com/106

쉘 스크립트 수행시 다음 오류 발생

/bin/bash^M: bad interpreter: no such file or directory

sed -i s/ctrl+VM// [file]