دیسک‌ها، پارتیشن‌ها و فایل سیستم

df : disk free

بررسی size و usage پارتیشن ها

df -hT
  -h human-readable size, powers of 1024 (e.g., 1023M)
  -T print file system type

مثال

$ df -hT
Filesystem     Type      Size  Used Avail Use% Mounted on
udev           devtmpfs  3.9G     0  3.9G   0% /dev
tmpfs          tmpfs     794M  1.5M  793M   1% /run
/dev/md0       ext4      916G  584G  286G  68% /
tmpfs          tmpfs     3.9G  3.1M  3.9G   1% /dev/shm
tmpfs          tmpfs     5.0M   16K  5.0M   1% /run/lock
/dev/loop0     squashfs  128K  128K     0 100% /snap/bare/5
/dev/loop2     squashfs   64M   64M     0 100% /snap/core20/2105
/dev/loop3     squashfs   75M   75M     0 100% /snap/core22/1033
/dev/loop1     squashfs  106M  106M     0 100% /snap/core/16202
/dev/loop4     squashfs  248M  248M     0 100% /snap/dbeaver-ce/279
/dev/loop5     squashfs  248M  248M     0 100% /snap/dbeaver-ce/281
/dev/loop6     squashfs  350M  350M     0 100% /snap/gnome-3-38-2004/143
/dev/loop7     squashfs   95M   95M     0 100% /snap/gnome-boxes/11
/dev/loop8     squashfs  497M  497M     0 100% /snap/gnome-42-2204/141
/dev/loop9     squashfs   92M   92M     0 100% /snap/gtk-common-themes/1535
/dev/md1       ext4      916G  632G  238G  73% /home
tmpfs          tmpfs     794M  2.5M  792M   1% /run/user/1000

Other commands

* du -hscS
* ncdu / gdu
* fdisk / gdisk
* mount / umount / eject , (cdrom, usb) , fstab
* dd / Duplicating Disks
      dd if=/dev/zero of=/test.fs bs=1M count=8192 status=progress
      mkfs.ext4 /test.fs
      mount -o loop /test.fs /disk
      df -hT | grep disk
      losetup --list /dev/loop6
      losetup --list --noheadings -O BACK-FILE /dev/loop6
      cat /sys/block/loop6/loop/backing_file
      
      dd if=/dev/zero of=/swap.fs bs=1M count=8192 status=progress
      chown root:root /swap.fs
      chmod 0600 /swap.fs
      mkswap /swap.fs
      swapon /swap.fs
      swapon --show
      free -h
      grep -i --color swap /proc/meminfo
      
      #/etc/fstab
      /swap.fs swap swap defaults 0 0
      /test.fs /disk ext4 defaults 0 1

* ls -lh /dev/disk/by-uuid/
* blkid /dev/sda1
* lsblk -p