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Full Discussion: Grep Command Help
Top Forums UNIX for Beginners Questions & Answers Grep Command Help Post 303045122 by vgersh99 on Thursday 12th of March 2020 09:13:59 AM
Old 03-12-2020
how about a little bit more "interesting" - with the menu:
Code:
#!/bin/bash

menu=$(fdisk -l | awk '/Device Boot/ {for(i=2;i<=NF;i++) print substr($i,1, index($i, " ")-1)}' RS= FS='\n';echo 'quit')

PS3='Which disk you want to increase the size?'

     select choice in ${menu}
     do
     case "$choice" in
          "")
               echo "You selected a non-existing item"
               ;;

          "quit")
               echo "You are leaving the loop"
               break
               ;;

          *)
               echo "You selected $choice"
               ;;
          esac

     done

This User Gave Thanks to vgersh99 For This Post:
 

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BLKDEACTIVATE(8)														  BLKDEACTIVATE(8)

NAME
blkdeactivate - utility to deactivate block devices SYNOPSIS
blkdeactivate [options] [device...] DESCRIPTION
blkdeactivate utility deactivates block devices. If a device is mounted, the utility can unmount it automatically before trying to deacti- vate. The utility currently supports device-mapper devices, including LVM volumes. LVM volumes are handled directly using the lvm command. Other device-mapper based devices are handled using the dmsetup command. OPTIONS
-e, --errors Show errors reported from tools called by blkdeactivate. Without this option, any error messages from these external tools are sup- pressed and the blkdeactivate itself provides only a summary message about device being skipped or not. -h, --help Display the help text. -u, --umount Unmount a mounted device before trying to deactivate it. Without this option used, a device that is mounted is not deactivated. -v, --verbose Run in verbose mode. -d, --dmoption dm_options Comma separated list of device-mapper specific options. -l, --lvmoption lvm_options Comma separated list of LVM specific options. DM_OPTIONS retry Retry removal several times in case of failure. force Force device removal. See dmsetup(8) for more information. LVM_OPTIONS retry Retry removal several times in case of failure. wholevg Deactivate the whole LVM Volume Group when processing a Logical Volume. Deactivating Volume Group as a whole takes less time than deactivating each Logical Volume separately. EXAMPLES
Deactivate all supported block devices found in the system. If a device is mounted, skip its deactivation. blkdeactivate Deactivate all supported block devices found in the system. If a device is mounted, unmount it first if possible. blkdeactivate -u Deactivate supplied device together with all its holders. If any of the devices processed is mounted, unmount it first if possible. blkdeactivate -u /dev/vg/lvol0 Deactivate all supported block devices found in the system. Retry deactivation of device-mapper devices in case the deactivation fails. Deactivate the whole Volume Group at once when processing an LVM Logical Volume. blkdeactivate -u -d retry -l wholevg Deactivate all supported block devices found in the system. Retry deactivation of device-mapper devices in case the deactivation fails and force removal. blkdeactivate -d force,retry SEE ALSO
lsblk(8) umount(8) dmsetup(8) lvm(8) Red Hat, Inc LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) BLKDEACTIVATE(8)
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