Provided by: pexec_1.0~rc8-4_amd64
pexec - executing commands in parallel
pexec [options] [-c|-m] [--] command [arguments] | 'compound command'
Execute commands or shell scripts in parallel on a single host or on remote hosts using a remote shell.
General options: -h, --help Gives general summary about the command line options. --long-help Gives a detailed list of command line options. --version Gives some version information about the program. -s, --shell <shell> Full path (e.g. /bin/sh) of the shell or interpreter to be used for script execution. -c, --shell-command Use the specified shell to interpret the command(s) instead of direct execution. -m, --multiple-command Allow multiple individual shell command scripts to be executed in parallel with the variation of the parameters. -e, --environment <variable> Name of an environmental variable which is set to the respective parameter before each execution. -n, --number <number> The maximal number of processes running simultaneously. The <number> itself can even be a complex specification of remote hosts (see documentation for more details). -C, --control <port> The control port of a hypervisor daemon (full path of a UNIX socket or an INET host specification). -p, --list <list> The single-argument form of main parameter list. -r, --parameters <list> The multiple-argument form of the main parameter list. -f, --listfile <file> The main parameter list file. -w, --column <index> The column index from where the parameters should be taken if they are read from a parameter file. -t, --complete Threat the whole line as a single parameter if the parameters are read from a file. -z, --nice Sets the scheduling priority of pexec and all children (executed processes) to the priority defined by this nice value. -- A marker after which the command to execute begins. Redirecting standard input, output and error: -i, --input <input> The (optionally formatted) name of the input file which is used for redirecting the standard input. -o, --output <output> The (optionally formatted) name of the output file which is used for redirecting the standard output. -u, --error <output> The (optionally formatted) name of the output error file, which is used for redirecting the standard error. -R, --normal-redirection Equivalent to specifying --output -, --error - and --input /dev/null. -a, --output-format <format> The format of the final standard output redirection if the output of all of the processes are gathered into the same file. -b, --error-format <format> The same final redirection format for the standard error. -x, --omit-newlines Disable automatic newlines after the output and error formats. Execution using remote hosts: -g, --remote-shell <remote_shell> The name or full path of the remote shell to be used for building the tunnel between the local and the peer host(s). Default: ``/usr/bin/ssh''. -P, --pexec <pexec> The full path of the pexec program on the remote hosts. If this option is omitted, pexec tries to figure out from the invoking syntax and/or the current path. -T, --tunnel Internal use only (pexec will start in tunnel daemon mode). Remote control, mutual exclusions and atomic command execution: -y, --bind <port> This option lets pexec to be remote controlled via INET or UNIX domain sockets. -E, --pexec-connection-variable <env> This option overrides the default environment name PEXEC_REMOTE_PORT to the specified value, which is used by the ``-p|--connect auto'' combination to determine the control socket with which the running pexec instance can be controlled. -j, --remote Used to remote control and/or poll the status of other running instances of pexec. -p, --connect <port> Remote control port to connect to. -t, --status Prints the actual status of the running jobs in a human-readable form. -l, --lock <mutex> Locks the specified mutex (if the mutex is not locked by someone else, otherwise it will block until the mutex is released). -u, --unlock <mutex> Unlocks the specified mutex. -m, --mutex <mutex> Name of the mutex. -d, --dump <filename> Dump the content of the given file to standard output, if ``-m|--mutex'' is given, this will be atomic. -s, --save <filename> Save the content of standard input to the given file, if ``-m|--mutex'' is given, this will be atomic. -a, --atomic <command> Execute the given command. If ``-m|--mutex'' is given, the exectution is going to be atomic with respect to that mutex. Hypervisor mode: -H, --hypervisor Starts pexec in hypervisor mode. -C, --control <port> The control port used by the hypervisor. -l, --load <window> Use load also to limit the number of simultaneous processes with the specified load average interval (0, 1 or 2, or 1min, 5min or 15min, respectively). -f, --fifo First in first out queue processing. -s, --lifo Last in first out (stack) queue processing (default). Logging: -L, --log <file> The name of the log file. -W, --log-level <level> The logging level. -V, --verbose Increase the log level by one.
Report bugs to <email@example.com>
Copyright © 2007, 2008-2009; Pal, Andras <firstname.lastname@example.org> This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law. This software was written by Andras Pal. The core part was written while working for the Hungarian-made Automated Telescope (HAT) project to make the data processing more easier and therefore find many-many extrasolar planets. See more information about this project: http://hatnet.hu. Another internal libraries (e.g. numhash.[ch]) were primarily written for other projects.
The full documentation for pexec is maintained as a Texinfo manual. If the info and pexec programs are properly installed at your site, the command info pexec should give you access to the complete manual.