[See a real screenshot]
[See an ANIMATED screenshot (v2.2)] (may be slow on older machines)
In a typical usage, a user might need to check a few things and run a number of commands on five different machines. After setting up all the windows to work with xlax (see below), and with send strings set to hostnames, the user will type "ssh " and then click "Send String", and then type return, and the user will simultaneously log into those five different machines. They can then type the commands once and see them run on all machines at the same time.
This method of setup can be tedious, and xlax also allows for automated setup. If you press the "Find xlax:" button, or if you start xlax with -find, it will search for windows with a Name hint that starts with "xlax:" and add them automatically. Additionally, any text after the "xlax:" will be used as the send string. The "xlax:" prefix can be changed to some other string with the "-prefix" option. For xterms, the name hint is set with the "-name" option. Here's an example:
example% xterm -xrm 'XTerm*allowSendEvents: true' -name xlax:string1 &  555 example% xterm -xrm 'XTerm*allowSendEvents: true' -name xlax:string2 &  556 example% xterm -xrm 'XTerm*allowSendEvents: true' -name xlax:string3 &  557 example% xlax -find &While all this is an improvement, it is still tedious to prepare all of the windows with the proper Name hint. The real use for this method is to make window setup script-able, for cases where you repeatedly need the same layout of windows. One such script (mkxlax) is included in this package, and is described below.
mkxlax host1 host2 host3 host4 host5This command will create 5 xterms, with sendEvents enabled, and with the name hints set to the arguments, e.g. the first window will have a name hint of "mkxlax:host1". mkxlax then starts up "xlax -find -prefix mkxlax", to find all the windows that have been set up.
mkxlax also has options for controlling the positioning of the windows, allowing them to be tiled or stacked, overlapped or not. It also has options for using different xlax prefixes (with "-group") so that you can run multiple mkxlax commands at the same time without interfering with each other.
All of these options can be stored in a configuration file that lets you have simple presets that you can bring up as needed. This can include the list of send strings, but it doesn't have to. The presets can be overridden on the command line. You can then have a quick command like "mkxlax -layout macservers" to bring up all of your mac servers in a particular arrangement on the screen, or run a command "mkxlax -layout stack_vertical host1 host2 host3" to layout an arbitrary set of windows in an arrangement that you've predefined.
mkxlax is further described in a man page included in the distribution.
It does of course multiply your ability to shoot yourself in the foot.
xlax was modified by me in 2007 to allow for automatically finding windows based on the name hint. Also added was automatic dropping of dead windows, and an improved interface for manually setting the send string.
A different version of mkxlax was written by me initially in maybe 1998. It was completely rewritten in 2007 to accomodate xlax' ability to automatically find and add windows.
(Version 2.3 can be downloaded here.
June 11, 2008 - paste current selection
(Version 2.2 can be downloaded here. June 6, 2008 - mkxlax: control xterm size and options)
(Version 2.1 can be downloaded here. March 6, 2008 - mkxlax configuration file support)
(Version 2.0 can be downloaded here. Aug 21, 2007)
(Prehistoric version can be downloaded here. Nov 4, 1992)
xlax is now listed at freshmeat.net. If you want to be notified of changes on this project, please subscribe there (freshmeat account required).
cd (to some place where you have write access, and a spare 200KB) cp /path/to/xlax2.3.tar.gz . (if it is not already in this directory) gunzip xlax2.3.tar.gz tar xvf xlax2.3.tar cd xlax2.3 xmkmf makeInstallation must be done by hand, but there are only four files to install: xlax, mkxlax, xlax.man, and mkxlax.man (the man pages can be installed in section 1 or section 8 at the user's discretion).
mkxlax uses perl (any version should work). To install, the first line of the file may need to be changed to point to an existing copy of perl.
Two terminal programs apparently have some amount of built-in functionality to do what xlax does. konsole apparently allows you to type into all the tabs of a window at once. This would have the disadvantage that you can only see output from one of those tabbed subwindows. MGT also reportedly has some kind of functionality like this, but I don't know the details.
There's also tentakel, which is quasi-interactive, in that once you have connected to a group of systems, you can run multiple commands, but they are not executed fully interactive.
There's also something called c3, for Cluster Command and Control. And something called fanout, which may be different than the fanout which is available as part of bitcluster.
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