z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

file is command and filename expanded and then tested to see if it has the
specified relationship to the real user. If file does not exist or is inaccessible or, for
the operators indicated by *, if the specified file type does not exist on the current
system, then all inquiries return false (0).
These operators may be combined for conciseness: –xy file is equivalent to –x file
&& –y file. For example, –fx is true (returns 1) for plain executable files, but not for
directories.
L may be used in a multiple-operator test to apply subsequent operators to a
symbolic link instead of to the file to which the link points. For example, -lLo is true
for links owned by the invoking user. Lr, Lw, and Lx are always ture for links and
false for non-links. L has a different meaning when it is the last operator in a
multiple-operator test.
It is possible but not useful, and sometimes misleading, to combine operators which
expect file to be a file with operators which do not (for example, X and t). Following
L with a non-file operator can lead to particularly strange results.
Other operators return other information, that is not just 0 or 1. They have the same
format as before where op may be one of:
A Last file access time, as the number of seconds since epoch
A: Like A, but in timestamp format, that is, ’Fri May 14 16:36:10 1993’
M Last file modification time
M: Like M, but in timestamp format
C Last inode modification time
C: Like C, but in timestamp format
D Device number
I Inode number
F Composite file identifier, in the form device : inode
L The name of the file pointed to by a symbolic link
N Number of (hard) links
P Permissions, in octal, without leading zero
P: Like P, with leading zero
P mode
Equivalent to -P mode & file, that is, -P22 file returns 22 if file is writable by
group and other, 20 if by group only, and 0 if by neither.
P mode:
Like P mode, with leading zero
U Numeric userid
U: Username, or the numeric userid if the username is unknown
G Numeric groupid
G: Groupname, or the numeric groupid if the groupname is unknown
Z Size in bytes
m file returns the seclabel of the file if one exists. Otherwise, returns false.
tcsh
Chapter 2. Shell command descriptions 649