TLDR
Enter a command. For example: hcloud, watchexec, gmssl, spark.

parallel

 
Run commands on multiple CPU cores. More information: https://www.gnu.org/software/parallel.
 
  • Gzip several files at once, using all cores:
     
    parallel gzip ::: {{file1}} {{file2}} {{file3}}
     
  • Read arguments from stdin, run 4 jobs at once:
     
    ls *.txt | parallel -j4 gzip
     
  • Convert JPG images to PNG using replacement strings:
     
    parallel convert {} {.}.png ::: *.jpg
     
  • Parallel xargs, cram as many args as possible onto one command:
     
    {{args}} | parallel -X {{command}}
     
  • Break stdin into ~1M blocks, feed each block to stdin of new command:
     
    cat {{big_file.txt}} | parallel --pipe --block 1M {{command}}
     
  • Run on multiple machines via SSH:
     
    parallel -S {{machine1}},{{machine2}} {{command}} ::: {{arg1}} {{arg2}}

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