Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site umcp-cs.UUCP Path: utzoo!watmath!clyde!floyd!harpo!seismo!rlgvax!cvl!umcp-cs!chris From: chris@umcp-cs.UUCP Newsgroups: net.unix Subject: Re: Question about ustat(2) and free disk space / df, 4BSD Message-ID: <5591@umcp-cs.UUCP> Date: Thu, 1-Mar-84 23:25:45 EST Article-I.D.: umcp-cs.5591 Posted: Thu Mar 1 23:25:45 1984 Date-Received: Sat, 3-Mar-84 23:14:08 EST References: <16862@sri-arpa.UUCP> Organization: Univ. of Maryland, Computer Science Dept. Lines: 15 Under 4.1 "df" works by reading the superblock off the disk. 4.1 maintains a "tfree" value in the superblock which holds the amount of free space. df also has a "-l" option to go count up the free list (it's printed out under a column marked "hardway" -- pretty appropriate). The -l option is occasionally useful if you suspect your superblock is munged. For the adventurous, you can experiment with different disk-inode- table sizes based on the output of "df -i". -- In-Real-Life: Chris Torek, Univ of MD Comp Sci UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris.umcp-cs@CSNet-Relay