辅助并行运算工具-GNU parallel
2013-12-10 18:10:27 
阿炯
GNU parallel is a shell tool for executing jobs in parallel using one or more computers. A job can be a single command or a small script that has to be run for each of the lines in the input. The typical input is a list of files, a list of hosts, a list of users, a list of URLs, or a list of tables. A job can also be a command that reads from a pipe. GNU parallel can then split the input and pipe it into commands in parallel.
GNU parallel是一个shell工具，可将一个或多个计算任务(作业)分解并以并行的方式来完成。作业可以是一个命令或一个小的脚本，典型的输入处理可心是一个文件列表，主机的列表，用户列表，网址列表，或者表中的列。作业可以是从管道读取的命令，GNU parallel 可以可以将其输入拆分并且以并行的方式来运行。采用C/C++开发并在GPLv2协议下使用。
If you use xargs and tee today you will find GNU parallel very easy to use as GNU parallel is written to have the same options as xargs. If you write loops in shell, you will find GNU parallel may be able to replace most of the loops and make them run faster by running several jobs in parallel.
GNU parallel makes sure output from the commands is the same output as you would get had you run the commands sequentially. This makes it possible to use output from GNU parallel as input for other programs.
For each line of input GNU parallel will execute command with the line as arguments. If no command is given, the line of input is executed. Several lines will be run in parallel. GNU parallel can often be used as a substitute for xargs or cat | bash.
最新版本：
项目主页：https://www.gnu.org/software/parallel/
GNU parallel是一个shell工具，可将一个或多个计算任务(作业)分解并以并行的方式来完成。作业可以是一个命令或一个小的脚本，典型的输入处理可心是一个文件列表，主机的列表，用户列表，网址列表，或者表中的列。作业可以是从管道读取的命令，GNU parallel 可以可以将其输入拆分并且以并行的方式来运行。采用C/C++开发并在GPLv2协议下使用。
If you use xargs and tee today you will find GNU parallel very easy to use as GNU parallel is written to have the same options as xargs. If you write loops in shell, you will find GNU parallel may be able to replace most of the loops and make them run faster by running several jobs in parallel.
GNU parallel makes sure output from the commands is the same output as you would get had you run the commands sequentially. This makes it possible to use output from GNU parallel as input for other programs.
For each line of input GNU parallel will execute command with the line as arguments. If no command is given, the line of input is executed. Several lines will be run in parallel. GNU parallel can often be used as a substitute for xargs or cat | bash.
最新版本：
项目主页：https://www.gnu.org/software/parallel/