FTEST(1) FTEST(1)
NAME
ftest, newer - test file attributes
SYNOPSIS
ftest test arg
newer file1 file2
DESCRIPTION
Ftest checks the specified attribute of arg according to
test and yields an exit status signifying the result. For
all tests apart from -t, arg is the name of the file to be
tested; for -t, it is the number of a file descriptor.
Available tests are:
-d True if the file exists and is a directory.
-e True if the file exists.
-f True if the file exists and is a regular file.
-r True if the file exists and is readable.
-s True if the file exists and has non-zero size.
-t True if the open file represented by the number arg
represents the same file as /dev/cons.
-w True if the file exists and is writable.
-x True if the file exists and is executable.
Newer checks whether file1 exists and is no older than
file2, which must also exist; if so, it yields a true exit
status. Otherwise, it yields an error status. Neither file
may be a directory.
SOURCE
/appl/cmd/ftest.b
/appl/cmd/newer.b
SEE ALSO
sys-stat(2)
BUGS
These commands work only with sh(1) as none of the other
Inferno shells can check the exit status of a command.
Checking for read, write and execute capabilities is specu-
lative - the file server has the last say. Group
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FTEST(1) FTEST(1)
permissions are ignored.
Page 2 Plan 9 (printed 12/21/24)