find(1)
NAME
find − find files
SYNTAX
find pathname-list expression
DESCRIPTION
The find command recursively descends the directory hierarchy for each pathname in the pathname-list (that is, one or more pathnames) seeking files that match a boolean expression written in the primaries given below. In the descriptions, the argument n is used as a decimal integer where +n means more than n, −n means less than n and n means exactly n.
OPTIONS
−atime n
Tests true if the file has been accessed in n days.
−cpio device
Writes current file on device in cpio() format (5120-byte records).
−exec command
Tests true if specified command returns a 0 on exit. The end of the command must be punctuated by an escaped semicolon. A command argument ‘{}’ is replaced by the current pathname.
−group gname
Tests true if group ID matches specified group name.
−inum n
Tests true if the file has inode number n.
−links n
Tests true if the file has n links.
−mount
Tests true if the current file is on the same file system as the current starting pathname.
−mtime n
Tests true if the file has been modified in n days.
−name filename
Tests true if the filename argument matches the current file name. Normal Shell argument syntax may be used if escaped (watch out for ‘[’, ‘?’ and ‘*’).
−newer file
Tests true if the current file has been modified more recently than the argument file.
−ok command
Executes specified command on standard output, then standard input is read and command executed only upon response y.
−perm onum
Tests true if file has specified octal number. For further information, see chmod(.). If onum is prefixed by a minus sign, more flag bits (017777) become significant and the flags are compared: (flags&onum)==onum. For further information, see stat(.).
−print
Prints current pathname.
−size n
Tests true if the file is n blocks long (512 bytes per block).
−type c
Tests true if file is c type ( c = b, block special file: c, character special file: d, directory: f, plain file: l, symbolic link).
−user uname
Tests true if file owner is login name or numeric user ID.
The primaries may be combined using the following operators (in order of decreasing precedence):
1) A parenthesized group of primaries and operators (parentheses are special to the Shell and must be escaped).
2) The negation of a primary (‘!’ is the unary not operator).
3) Concatenation of primaries (the and operation is implied by the juxtaposition of two primaries).
4) Alternation of primaries (‘−o’ is the or operator).
EXAMPLE
To remove all files named ‘a.out’ or ‘*.o’ that have not been accessed for a week:
find / \( −name a.out −o −name ’*.o’ \) −atime +7 −exec rm {} \;
To find all files on the root file system use:
find / -mount -print
To find all the mount points on the root file system use:
find / ! -mount -print
FILES
/etc/passwd
/etc/group