bash run multiple commands in parallel
# Basic syntax: # If you want to run a bunch of shell commands simultaneously, you can # put them in a file followed by " &" and then bash the file, e.g.: commands_to_run.txt # contains the following lines: command 1 & command 2 & command 3 & # Running the file with bash will cause all commands to be run in parallel bash commands_to_run.txt # Where this can be practical when you want to build up a set of similar # shell commands to e.g. process a set of samples. # Note, # - in Vim, you can type :%s/^/text to add before/ to add text at the # beginning of every line and :%s/$/text to add after/ to add text at the # end of every line. # Example usage: # Say you have a directory of files that you want to process in parallel with # the same shell command. To do this, I'll often do the following: # Send filenames to a file: ls /directory/of/files > commands_to_run.txt # Initial contents of file: cat commands_to_run.txt file1 file2 file3 file4 # Prepend and append relevant parts of the command: vi commands_to_run.txt :%s/^/beginning of command/ :%s/$/ \&/ # Final contents of file: cat commands_to_run.txt beginning of command file1 & beginning of command file2 & beginning of command file3 & beginning of command file4 & # Run all commands in parallel bash commands_to_run.txt
Source: saveriomiroddi.github.io
bash start two processes at the same time
prog1 & prog2 && fg
Source: stackoverflow.com