Free space:
$ df
Free space in MB:
$ df -m
Free space in human readable format:
$ df -h
Number of free nodes:
$ df -i
ext4 uses 32-bit inode numbers so number of files limited to 2^32.
| fs | name | inode | sub-dir | file | fs total |
|---|---|---|---|---|---|
| ext2 | 255 | 2 TiB | 16 TiB | ||
| ext3 | 255 | 32000 | 2 TiB | 16 TiB | |
| ext4 | 255 | 2^32 | 64000 | 16 TiB | 16 TiB |
| btrfs | 255 | 2^64 | 16 EiB | 16 EiB | |
| fat32 | 255 | 268e+6 | 2^16 | 2 GiB | 8 TiB |
| ntfs | 255 | 2^32 | 2^32 | 16 TiB | 256 TiB |
| xfs | 255 | 100 TiB | 100 TiB | ||
| gfs2 | 255 | 100 TiB | 100 TiB |
The volume name can be up to 11 characters long:
$ sudo mlabel -i /dev/<device> ::my-label
or when create FAT32 file system:
$ sudo mkdosfs -n <vol-name> /dev/<device>
$ convmv --nosmart -f cp-1251 -t utf-8 -r $dir
POSIX define 3 file time attributes: atime (access time, only a few OS/fs update this parameter), ctime (attribute/inode modification time), mtime (modification time).
To get time you can use 'ls' command but it print time in locale dependent irregular form:
$ ls -l file.txt # last file modification $ ls -lc file.txt # last file status modification $ ls -lu file.txt # last access
GNU coreutils provide more robust 'stst' utility:
$ stat -c %Y file.txt # last file modification $ stat -c %Z file.txt # last file status modification $ stat -c %X file.txt # last access
Include UUID (Universally Unique Identifier) and labels:
$ ls -l /dev/disk/by-uuid/ lrwxrwxrwx 1 root root 10 2010-11-01 23:41 46B6-1FD4 -> ../../sdb2 lrwxrwxrwx 1 root root 10 2010-11-01 23:41 4C30299030298256 -> ../../sda1 $ ls -l /dev/disk/by-label/ lrwxrwxrwx 1 root root 10 2010-11-01 23:41 bin -> ../../sda3 lrwxrwxrwx 1 root root 10 2010-11-01 23:41 inst -> ../../sda2 lrwxrwxrwx 1 root root 10 2010-11-01 23:41 media -> ../../sdc5 $ sudo vol_id /dev/dm-2 ID_FS_USAGE=filesystem ID_FS_TYPE=ext3 ID_FS_VERSION=1.0 ID_FS_UUID=f7484fc9-75ec-4e46-8539-50b1e371b7ef ID_FS_UUID_ENC=f7484fc9-75ec-4e46-8539-50b1e371b7ef ID_FS_LABEL= ID_FS_LABEL_ENC= ID_FS_LABEL_SAFE= $ /sbin/blkid ## from 'e2fsprogs' package /dev/sdc2: UUID="46B6-1FD4" TYPE="vfat" /dev/sdb2: TYPE="ntfs" UUID="BC48D3FD48D3B47C" LABEL="inst" /dev/sda5: UUID="5240AED140AEBB5D" LABEL="music" TYPE="ntfs" /dev/sdc1: UUID="81c4444f-0b70-429a-9d97-8c13e8651f5b" TYPE="ext3" /dev/sdc3: UUID="KOpHWz-clDR-2MqV-vAkE-cPvY-uZrY-kjYJIb" TYPE="lvm2pv" $ udevinfo --query=all --name /dev/sdb ## from 'udev' package P: /block/sdb N: sdb S: disk/by-id/ata-WDC_WD1600JS-00MHB0_WD-WCANM5835587 S: disk/by-id/scsi-SATA_WDC_WD1600JS-00_WD-WCANM5835587 S: disk/by-path/pci-0000:00:08.0-scsi-1:0:0:0 E: ID_VENDOR=ATA E: ID_MODEL=WDC_WD1600JS-00M E: ID_REVISION=02.0 ...
Ext2Fsd is an open source linux ext3/ext4 file system driver for Windows systems (NT/2K/XP/Win7/Win8, X86/AMD64) and only alive project.
It provides Windows NT4.0/2000/XP/2003/Vista/2008 with full access to Linux Ext2 volumes (read access and write access). This may be useful if you have installed both Windows and Linux as a dual boot environment on your computer.
The "Ext2 Installable File System for Windows" software is freeware.
After install use 'ifsdrives.cpl' control panel to modify settings.
Allows you to access ReiserFS partitions from a Windows 95/98/ME/NT/2000/XP system. It also allows you to access ReiserFS partitions from Linux. It is a complete rewrite of the ReiserFS functions needed to list directories, copy files, and backup metadata.
$ find . -type f -iname "*.log" -print0 | du --files0-from=- -c -m | tail -n 1 \
| (read first rest; echo $first)
Mount in rw mode:
$ man 8 ntfs-3g $ cat /etc/fstab ... UUID=D474CB9874CB7C2C /mnt/winbin ntfs-3g rw,default_permissions,gid=1000,fmask=113,dmask=002,noatime,silent 0 0 ...
Check current settings:
$ tune2fs -l /dev/$DISK
and tune them:
$ tune2fs -c 0 /dev/$DISK $ tune2fs -i 2w /dev/$DISK
Or disable checks in /etc/fstab completely (by setting last colon to 0 value)!