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df
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Description
df est une commande assez pratique car elle permet d’avoir rapidement des informations sur l’usage des disques durs et des points de montage du système. Avec l’option -h on obtiens les informations sous une forme plus appréciable (MB, GB, etc..). Il s’agit d’une commande assez répandu sur les sytèmes Unix.
Quelques options sont également intéressantes comme –total qui rajoute une ligne avec un total de l’ensemble des disques. On peut également donner en paramètre à df un point de montage ou un dossier et il retournera l’information sur l’usage disque spécifique au chemin donné en paramètre, cela a le double avantage de connaître l’usage mais aussi de savoir quel point de montage est utilisé sur ce dossier.
df s’utilise généralement avec la commande mount.
Exemple
root@solaris:~# df Filesystem 1K-blocks Used Available Use% Mounted on rpool/ROOT/solaris 7234607 2173132 5061475 31% / swap 858260 368 857892 1% /etc/svc/volatile /usr/lib/libc/libc_hwcap1.so.1 7234607 2173132 5061475 31% /lib/libc.so.1 swap 857896 4 857892 1% /tmp swap 857936 44 857892 1% /var/run rpool/export 5061507 32 5061475 1% /export rpool/export/home 5061507 32 5061475 1% /export/home rpool/export/home/axel 5061509 34 5061475 1% /export/home/axel rpool 5061568 93 5061475 1% /rpool /export/home/axel 5061509 34 5061475 1% /home/axel root@solaris:~# df -h Filesystem Size Used Avail Use% Mounted on rpool/ROOT/solaris 6,9G 2,1G 4,9G 31% / swap 839M 368K 838M 1% /etc/svc/volatile /usr/lib/libc/libc_hwcap1.so.1 6,9G 2,1G 4,9G 31% /lib/libc.so.1 swap 838M 4,0K 838M 1% /tmp swap 838M 44K 838M 1% /var/run rpool/export 4,9G 32K 4,9G 1% /export rpool/export/home 4,9G 32K 4,9G 1% /export/home rpool/export/home/axel 4,9G 34K 4,9G 1% /export/home/axel rpool 4,9G 93K 4,9G 1% /rpool /export/home/axel 4,9G 34K 4,9G 1% /home/axel
Man solaris de la commande df
NAME df - report file system disk space usage SYNOPSIS df [OPTION]... [FILE]... DESCRIPTION This manual page documents the GNU version of df. df displays the amount of disk space available on the file sys- tem containing each file name argument. If no file name is given, the space available on all currently mounted file systems is shown. Disk space is shown in 1K blocks by default, unless the environment variable POSIXLY_CORRECT is set, in which case 512-byte blocks are used. If an argument is the absolute file name of a disk device node containing a mounted file system, df shows the space available on that file system rather than on the file system containing the device node (which is always the root file system). This version of df cannot show the space available on unmounted file systems, because on most kinds of systems doing so requires very nonportable intimate knowledge of file system structures. OPTIONS Show information about the file system on which each FILE resides, or all file systems by default. Mandatory arguments to long options are mandatory for short options too. -a, --all include dummy file systems -B, --block-size=SIZE use SIZE-byte blocks --total produce a grand total -h, --human-readable print sizes in human readable format (e.g., 1K 234M 2G) -H, --si likewise, but use powers of 1000 not 1024 -i, --inodes list inode information instead of block usage -k like --block-size=1K -l, --local limit listing to local file systems --no-sync do not invoke sync before getting usage info (default) -P, --portability use the POSIX output format --sync invoke sync before getting usage info -t, --type=TYPE limit listing to file systems of type TYPE -T, --print-type print file system type -x, --exclude-type=TYPE limit listing to file systems not of type TYPE -v (ignored) --help display this help and exit --version output version information and exit Display values are in units of the first available SIZE from --block-size, and the DF_BLOCK_SIZE, BLOCK_SIZE and BLOCK- SIZE environment variables. Otherwise, units default to 1024 bytes (or 512 if POSIXLY_CORRECT is set). SIZE may be (or may be an integer optionally followed by) one of following: KB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P, E, Z, Y. AUTHOR Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert. REPORTING BUGS Report df bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> Report df translation bugs to <http://translationproject.org/team/> COPYRIGHT Copyright O 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistri- bute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO The full documentation for df is maintained as a Texinfo manual. If the info and df programs are properly installed at your site, the command info coreutils df invocation should give you access to the complete manual. ATTRIBUTES See attributes(5) for descriptions of the following attri- butes: ___________________________________________ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |____________________|_____________________| | Availability | file/gnu-coreutils | |____________________|_____________________| | Interface Stability| Uncommitted | |____________________|_____________________| NOTES Source for GNU coreutils is available on http://opensolaris.org.