DF(1) COMMAND REFERENCE DF(1) NAME df - disk free SYNOPSIS df [ -i ] [ -t type | [ filesystem ... ] [ filename ... ]] DESCRIPTION The df command prints out the amount of free disk space available on the specified filesystem, e.g. /dev/rp0a, or on the file system in which the specified file, e.g. $HOME, is contained. If no file system is specified, the free space on all normally mounted file systems is printed; the reported numbers are in kilobytes. There are two output formats. The following columns are listed normally: Filesystem kbytes used avail capacity Mounted on The Filesystem column lists the name of the device for the file system, such as /dev/hp0a; The kbytes column lists the number of kilobytes on the device; the used column lists the number of kilobytes allocated to files; the avail column lists the number of kilobytes still available for files; the capacity column lists the percentage of the file system space that is allocated; the Mounted on column lists the name of the root of the filesystem, such as /. When the -i option is given, the following columns are also given: iused ifree %iused The iused column lists the number of inodes allocated; the ifree column lists the number of inodes still available; the %iused column lists the percentage of the total number of inodes that are allocated. OPTIONS -i Report the number of inodes used and the number of inodes that are free. Under some circumstances it may be impossible to obtain reliable statistics about inodes on a remote file system when using this option. If this is the case, the iused, ifree and %iused fields will be printed as "---" for that file system. Printed 5/12/88 1
DF(1) COMMAND REFERENCE DF(1) -t type | filesystem filename Specify type 4.2 or nfs; if you specify a filesystem or filename df reports information about those objects too. EXAMPLES The following example prints a report of the free and used disk space and inodes in the file system /tmp: df -i /tmp FILES /etc/fstab file containing the list of normally mounted file systems /etc/mtab file containing the mounted file system table RETURN VALUE [NO_ERRS] Command completed without error. [USAGE] Incorrect command line syntax. Execution terminated. [NP_WARN] An error warranting a warning message occurred. Execution continues. [P_WARN] A system error occurred. Execution continues. See intro(2) for more information on system errors. [P_ERR] A system error occurred. Execution terminated. See intro(2) for more information on system errors. CAVEATS The capacity of a file system can be reported as more than 100% because swap space may be being used. The swap space is not normally included in the statistics. Under some circumstances it may be impossible to obtain reliable statistics about inodes on a remote file system when using the -i option. If this is the case, the iused, ifree and %iused fields will be printed as "---" for that file system. SEE ALSO fstab(5), mtab(5), icheck(8), and quot(8). Printed 5/12/88 2
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