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bash_oneliners [2020/06/10 15:26] adminbash_oneliners [2023/07/27 13:28] (current) admin
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   * To find the largest file in all sub-directories:   * To find the largest file in all sub-directories:
 <code> <code>
-find /path/to/folder -type f -exec ls -s {} \; | sort -nr | awk 'NR==1 { $1=""; sub(/^ /, ""); print }'+find -type f -exec ls -s {} \; | sort -nr | awk 'NR==1 { $1=""; sub(/^ /, ""); print }'
 </code> </code>
   * grep for valid IP Addresses.   * grep for valid IP Addresses.
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 <code> <code>
 free && sync && echo 3 > /proc/sys/vm/drop_caches && free free && sync && echo 3 > /proc/sys/vm/drop_caches && free
 +</code>
 +  * rescan all SCSI buses
 +<code>
 +for i in /sys/class/scsi_host/host{0..32}/scan; do echo "- - -" > $i; done
 +</code>
 +  * enlarge LVM
 +<code>
 +fdisk /dev/sdk
 +#set partition type to Linux LVM (type 8e)
 +pvcreate /dev/sdk1
 +vgextend VolGroupDB /dev/sdk1
 +lvextend -l +100%FREE /dev/mapper/VolGroupDB-data
 +resize2fs -p /dev/mapper/VolGroupDB-data
 +#for xfs use xfs_growfs /dev/mapper/VolGroupDB-data
 +parted -a optimal /dev/sdc mklabel gpt
 +parted -a optimal /dev/sdc mkpart p 0% 100%
 +parted -a optimal /dev/sdc set 1 lvm on
 +vgextend VGEXL /dev/sdf1
 +lvresize -l +100%free /dev/mapper/VGEXL-exllv
 +</code>
 +  * Enlarge LVM 2
 +<code>
 +echo '1' > /sys/class/scsi_disk/0\:0\:3\:0/device/rescan
 +yum install cloud-utils-growpart
 +growpart  /dev/sdd 1
 +pvresize /dev/sdd1
 +lvextend -l +100%FREE /dev/mapper/VGKUB-lv_kub
 +xfs_growfs /dev/mapper/VGKUB-lv_kub
 </code> </code>
bash_oneliners.1591802788.txt.gz · Last modified: 2020/06/10 15:26 by admin