bionic (1) pegasus-invoke.1.gz

NAME

       pegasus-invoke - invokes a command from a file

SYNOPSIS

       pegasus-invoke ( app | @fn ) [ arg | *@fn [..]]

DESCRIPTION

       The pegasus-invoke tool invokes a single application with as many arguments as your Unix permits (128k
       characters for Linux). Arguments are come from two places, either the command-line as regular arguments,
       or from a special file, which contains one argument per line.

       The pegasus-invoke tool became necessary to work around the 4k argument length limit in Condor. It also
       permits to use arguments inside argument files without worry about shell, Condor or Globus escape
       necessities. All argument file contents are passed as is, one line per argument entry.

ARGUMENTS

       -d
           This option increases the debug level. Currently, only debugging or no debugging is distinguished.
           Debug message are generated on stdout . By default, debugging is disabled.

       -h
           This option prints the help message and exits the program.

       --
           This option stops any option processing. It may only be necessary, if the application is stated on
           the command-line, and starts with a hyphen itself.The first argument must either be the application
           to run as fully-specified location (either absolute, or relative to current wd), or a file containing
           one argument per line. The PATH environment variables is not used to locate an application.
           Subsequent arguments may either be specified explicitely on the commandline. Any argument that starts
           with an at (@) sign is taken to introduce a filename, which contains one argument per line. The
           textual file may contain long arguments and filenames. However, Unices still impose limits on the
           maximum length of a directory name, and the maximum length of a file name. These lengths are not
           checked, because pegasus-invoke is oblivious of the application (e.g. what argument is a filename,
           and what argument is a mere string resembling a filename).

RETURN VALUE

       The pegasus-invoke tool returns 127, if it was unable to find the application. It returns 126, if there
       was a problem parsing the file. All other exit status, including 126 and 127, come from the application.

SEE ALSO

       pegasus-kickstart(1)

EXAMPLE

           $ echo "/bin/date" > X
           $ echo "-Isec" >> X
           $ pegasus-invoke @X
           2005-11-03T15:07:01-0600

       Recursion is also possible. Please mind not to use circular inclusions. Also note how duplicating the
       initial at (@) sign will escape its meaning as inclusion symbol.

           $ cat test.3
           This is test 3

           $ cat test.2
           /bin/echo
           @test.3
           @@test.3

           $ pegasus-invoke @test.2
           This is test 3 @test.3

RESTRICTIONS

       While the arguments themselves may contain files with arguments to parse, starting with an at (@) sign as
       before, the maximum recursion limit is 32 levels of inclusions. It is not possible (yet) to use stdin as
       source of inclusion.

HISTORY

       As you may have noticed, pegasus-invoke had the name invoke in previous incantations. We are slowly
       moving to the new name to avoid clashes in a larger OS installation setting. However, there is no
       pertinent need to change the internal name, too, as no name clashes are expected.

AUTHORS

       Mike Wilde <wilde at mcs dot anl dot gov>

       Jens-S. Vöckler <voeckler at isi dot edu>

       Pegasus http://pegasus.isi.edu/