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tailf: deprecated 

We want to remove it in 2 years, March 2017.

See discussion "tailf, really needed?"
http://thread.gmane.org/gmane.linux.utilities.util-linux-ng/10967

[kzak@redhat.com: - move warning to usage()]

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Ruediger Meier 2015-03-13 16:09:36 +01:00 committed by Karel Zak
parent 77837afcd1
commit 3f8478a71c
4 changed files with 23 additions and 5 deletions
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5
Documentation/deprecated.txt
View File

@ -3,6 +3,11 @@ deprecated utils are in maintenance mode and we keep them in source tree for
backward compatibility only.
what: tailf
why: "tail -f" is better nowadays, tailf has unfixed bugs
--------------------------
what: sfdisk --show-size
why: this does not belong to fdisk, use "blockdev --getsz"

1
tests/expected/tailf/simple
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@ -1,2 +1,3 @@
tailf: warning: use of 'tailf' is deprecated, use 'tail -f' instead
a b c d e f g h i j k l m n o p q r s t u v w x y z
0 1 2 3 4 5 6 7 8 9

6
text-utils/tailf.1
View File

@ -29,6 +29,12 @@ tailf \- follow the growth of a log file
[option]
.I file
.SH DESCRIPTION
.B tailf is deprecated.
It may have unfixed bugs and will be removed in March 2017. Nowadays it's safe
to use
.B tail -f
(coreutils) in contrast to the original documentation below.
.PP
.B tailf
will print out the last 10 lines of the given \fIfile\fR and then wait
for this \fIfile\fR to grow. It is similar to

16
text-utils/tailf.c
View File

@ -19,13 +19,18 @@
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* less -F and tail -f cause a disk access every five seconds. This
* program avoids this problem by waiting for the file size to change.
* Hence, the file is not accessed, and the access time does not need to be
* flushed back to disk. This is sort of a "stealth" tail.
*/
/*
* This command is deprecated. The utility is in maintenance mode,
* meaning we keep them in source tree for backward compatibility
* only. Do not waste time making this command better, unless the
* fix is about security or other very critical issue.
*
* See Documentation/deprecated.txt for more information.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
@ -202,6 +207,7 @@ static void __attribute__ ((__noreturn__)) usage(FILE *out)
fputs(USAGE_HELP, out);
fputs(USAGE_VERSION, out);
fprintf(out, USAGE_MAN_TAIL("tailf(1)"));
fputs(_("Warning: use of 'tailf' is deprecated, use 'tail -f' instead.\n"), out);
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}