Parallel
suggest changeIntroduction
Jobs in GNU Linux can be parallelized using GNU parallel. 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.
Syntax
- parallel [options] [command [arguments]] < list_of_arguments >
Parameters
Option | Description |
—— | —— |-j n
| Run n jobs in parallel |-k
| Keep same order |-X
| Multiple arguments with context replace |--colsep regexp
| Split input on regexp for positional replacements |{} {.} {/} {/.} {#}
| Replacement strings |{3} {3.} {3/} {3/.}
| Positional replacement strings |-S sshlogin
| Example: foo@server.example.com
--trc {}.bar
| Shorthand for –transfer –return {}.bar –cleanup |--onall
| Run the given command with argument on all sshlogins |--nonall
| Run the given command with no arguments on all sshlogins |--pipe
| Split stdin (standard input) to multiple jobs. |--recend str
| Record end separator for –pipe. |--recstart str
| Record start separator for –pipe. |