mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-04 19:45:54 +00:00
f088ce558f
xjobs reads job descriptions line by line and executes them in parallel. Signed-off-by: Sirio Balmelli <sirio@b-ad.ch> Co-authored-by: legendofmiracles <30902201+legendofmiracles@users.noreply.github.com> Co-authored-by: Sandro <sandro.jaeckel@gmail.com>
66 lines
2 KiB
Nix
66 lines
2 KiB
Nix
{ lib, stdenv, fetchurl
|
|
, flex, installShellFiles, ncurses, which
|
|
}:
|
|
|
|
stdenv.mkDerivation rec {
|
|
pname = "xjobs";
|
|
version = "20200726";
|
|
|
|
src = fetchurl {
|
|
url = "mirror://sourceforge//xjobs/files/${pname}-${version}.tgz";
|
|
sha256 = "0ay6gn43pnm7r1jamwgpycl67bjg5n87ncl27jb01w2x6x70z0i3";
|
|
};
|
|
|
|
nativeBuildInputs = [
|
|
flex
|
|
installShellFiles
|
|
which
|
|
];
|
|
buildInputs = [
|
|
ncurses
|
|
];
|
|
|
|
checkPhase = ''
|
|
runHook preCheck
|
|
./${pname} -V
|
|
runHook postCheck
|
|
'';
|
|
|
|
installPhase = ''
|
|
runHook preInstall
|
|
mkdir -p $out/{bin,etc}
|
|
install -m755 ${pname} $out/bin/${pname}
|
|
install -m644 ${pname}.rc $out/etc/${pname}.rc
|
|
installManPage ${pname}.1
|
|
runHook postInstall
|
|
'';
|
|
|
|
meta = with lib; {
|
|
description = "A program which reads job descriptions line by line and executes them in parallel";
|
|
homepage = "https://www.maier-komor.de/xjobs.html";
|
|
license = licenses.gpl2Plus;
|
|
platforms = platforms.all;
|
|
maintainers = [ maintainers.siriobalmelli ];
|
|
longDescription = ''
|
|
xjobs reads job descriptions line by line and executes them in parallel.
|
|
|
|
It limits the number of parallel executing jobs and starts new jobs when jobs finish.
|
|
|
|
Therefore, it combines the arguments from every input line with the utility
|
|
and arguments given on the command line.
|
|
If no utility is given as an argument to xjobs,
|
|
then the first argument on every job line will be used as utility.
|
|
To execute utility xjobs searches the directories given in the PATH environment variable
|
|
and uses the first file found in these directories.
|
|
|
|
xjobs is most useful on multi-processor/core machines when one needs to execute
|
|
several time consuming command several that could possibly be run in parallel.
|
|
With xjobs this can be achieved easily, and it is possible to limit the load
|
|
of the machine to a useful value.
|
|
|
|
It works similar to xargs, but starts several processes simultaneously
|
|
and gives only one line of arguments to each utility call.
|
|
'';
|
|
};
|
|
}
|