Bernhard Voelker 169161fa0e xargs: wait for process before prompting in interactive mode (-p) ...

In interactive mode, there is a race between xargs prompting
about the next command to be run, vs. the execution of the
echo command:

  $ echo 1 2 | xargs -n 1 -p
  /bin/echo 1 ?...y
  /bin/echo 2 ?...1
  y
  2

This behavior violates POSIX:
(http://pubs.opengroup.org/onlinepubs/9699919799/utilities/xargs.html):

  The xargs utility shall then invoke the constructed command line
  and wait for its completion. This sequence shall be repeated until
  one of the following occurs: [...]

* xargs/xargs.c (xargs_do_exec): Move the code for waiting for forked
processes up, so that the child process terminates before we prompt
for the next command.
* NEWS: Mention the fix.

Reported by jidanni@jidanni.org in
http://lists.gnu.org/archive/html/bug-findutils/2013-07/msg00015.html

2013-09-21 23:18:19 +01:00

..

testsuite

Document that -0/-d turns off logical end-of-file processing.

2013-03-29 16:39:01 +00:00

.cvsignore

Merged changes made for version 4.1.20 onto the trunk

2003-06-14 15:41:26 +00:00

.gitignore

Ignore generated files for the convenience of non-VPATH users.

2010-04-03 12:22:57 +01:00

Makefile.am

Bugfix to "make clean": do not delete header files.

2013-03-24 14:09:14 +00:00

xargs.1

Refer to the info manual in a clearer and more explicit way.

2013-09-20 17:56:29 +01:00

xargs.c

xargs: wait for process before prompting in interactive mode (-p)

2013-09-21 23:18:19 +01:00