UNIX Command $file vmlinuz-3.1.0-1-amd64 vmlinuz-3.1.0-1-amd64: Linux kernel x86 boot executable bzImage, version 3.1.0-1-amd64 (unknown@Debian) #1 SMP Tue Nov 29 13:47:12 UTC 2, RO-rootFS, swap_dev 0x2, Normal VGA $ UNIX Explanation file tests each argument in an attempt to classify it. There are three sets of tests, performed in this order: filesystem tests, magic tests, and …
Monthly Archives: January 2012
Tools
1. GNU core utilities http://savannah.gnu.org/projects/coreutils 2. Miscellaneous system utilities http://userweb.kernel.org/~kzak/util-linux/ 3. utilities for making and checking MS-DOS FAT filesystems http://www.daniel-baumann.ch/software/dosfstools/ 4. Undelete utility for the ext2 file system http://e2undel.sourceforge.net 5. utilities for manipulating files in an ext2/ext3 filesystem http://home.earthlink.net/~k_sheff/sw/e2tools/index.html 6. Determines file type using “magic” numbers http://www.darwinsys.com/file/ 7. filesystem activity monitoring tool http://mytty.org/fspy 8. realtime …
ls ( -L option )
UNIX Command $ls -l vmlinuz lrwxrwxrwx 1 root root 26 Dec 1 02:44 vmlinuz -> boot/vmlinuz-3.1.0-1-amd64 $ls -lL vmlinuz -rw-r–r– 1 root root 2725680 Nov 29 19:49 vmlinuz $ UNIX Explanation -L, –dereference when showing file information for a symbolic link, show information for the file the link references rather than for the link …
stackable filesystems . Wrapfs filesystem .
Classroom. Wrapfs is a full-fledged stackable null-layer (or loopback) filesystem that simply passes all operations and objects (unmodified) between the VFS and the lower filesystem. Wrapfs itself, however, is not easy to write for one main reason; it has to treat the lower filesystem as if it were the VFS, while appearing to the real …
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