Scientific Operations



FIND(I)                      5/15/74                      FIND(I)



NAME
     find - find files

SYNOPSIS
     find pathname expression

DESCRIPTION
     Find recursively descends the directory hierarchy from path-
     name seeking files that match a boolean  expression  written
     in  the primaries given below.  In the descriptions, the ar-
     gument n is used as a decimal integer where  +n  means  more
     than n, -n means less than n and n means exactly n.

     -name  filename  True  if  the filename argument matches the
                     current file name.   Normal  Shell  argument
                     syntax may be used if escaped (watch out for
                     `[', `?' and `*').

     -perm onum      True if the file  permission  flags  exactly
                     match  the octal number onum (see chmod(I)).
                     If onum is prefixed by a  minus  sign,  more
                     flag bits (017777, see stat(II)) become sig-
                     nificant  and  the   flags   are   compared:
                     (flags&onum)==onum.

     -type  c         True  if the type of the file is c, where c
                     is b, c, d or  f  for  block  special  file,
                     character  special  file, directory or plain
                     file.

     -links n        True if the file has n links.

     -user uname     True if the file belongs to the user  uname.

     -group gname    As it is for -user so shall it be for -group
                     (someday).

     -size n         True if the file is n blocks long (512 bytes
                     per block).

     -atime  n        True  if  the  file  has been accessed in n
                     days.

     -mtime n        True if the file  has  been  modified  in  n
                     days.

     -exec  command   True  if  the executed command returns exit
                     status zero (most commands do).  The end  of
                     the  command  is  punctuated  by  an escaped
                     semicolon.  A command argument `{}'  is  re-
                     placed by the current pathname.

     -ok command     Like -exec except that the generated command
                     line is printed with a question mark  first,
                     and is executed only if the user responds y.


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FIND(I)                      5/15/74                      FIND(I)


     -print          Always true; causes the current pathname  to
                     be printed.

     The  primaries may be combined with these operators (ordered
     by precedence):

     !               prefix not

     -a              infix and, second operand evaluated only  if
                     first is true

     -o              infix  or,  second operand evaluated only if
                     first is false

     ( expression )  parentheses  for  grouping.   (Must  be  es-
                     caped.)

     To  remove  files named `a.out' and `*.o' not accessed for a
     week:

          find / "(" -name a.out -o -name "*.o" ")" -a -atime  +7
          -a -exec rm {} ";"

FILES
     /etc/passwd

SEE ALSO
     sh(I), if(I), file system(V)

BUGS
     There is no way to check device type.
     Syntax should be reconciled with if.


























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