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

uucp
Execute Files
Execute files are data files containing commands that are created on other sites
and copied to your site. The files are treated as execute files when they arrive at
your site, where the commands are run by uuxqt.
On UUCP sites, execute files are named as:
X.remotX28A3003
where remot is the first five characters of the destination site’s name, X is the job
grade (execute files always have the grade X), and 28A3 is the sequence number.
Each execute file contains one command, and the necessary information to run the
command. The type of information on each line is identified by the first character in
the line. Not all lines are used in all files, and not all UUCP implementations support
all of these lines. The first line in an execute file must be a U line, and the last line
must be a C line.
# Indicates a comment. Comments and unrecognized commands are ignored.
C command
Requests that command be run. command is a string that includes the
program and arguments. This line must be present and must be the last line
in the execute file.
E Processes the command with execve(). If the E line is present, uuxqt runs
a fork()/ecec() sequence, unless the command contains a shell
metacharacter. In that case, uuxqt invokes a shell to run the command.
e Processes the command by the POSIX shell. It is intended to handle
commands that require special processing. If the e line is present, uuxqt
invokes the defined shell to run the command.
F filename [ xqtname ]
Names filename, a file required for the command to be run. This is usually
a file that is transferred from the site that uux was executed from, but it can
also be a file from the local site or some other site. If filename is not from
the local site, then it is usually a file in the spool directory. Multiple F lines
are allowed. Any file other than the standard input file requires the xqtname
argument and is copied to the execution directory as xqtname. If the
standard input file is not from the local site, it appears in both an F
command and an I command.
I stdin Names the file that supplies standard input to the command. If the standard
input file is not from the site running the command, the file is also in an F
command. If there is no standard input file, behavior depends on the site
implementation. uuxqt rejects the command; some UNIX implementations
use /dev/null as the standard input. Only one I line can be present in an
execute file; the corresponding F line must precede the file.
N No mail message should be sent, even if the command failed.
n Requests a mail message be sent if the command succeeded. Normally a
message is sent only if the command failed.
O stdout [ site ]
Names the standard output file. The optional second argument names the
site to which the file should be sent. If there is no second argument, the file
should be created on the executing site. Only one O line can be present in
an execute file; the corresponding F line must precede the O line.
928 z/OS V1R9.0 UNIX System Services Command Reference