multiplexer
v1.4.1 log multiplex
Multiplexer CLI tool
Takes a filename as an argument. It will then treat each line from this file as a command and spawn a process with it. Finally it will multiplex the output of each of those processes, prefixing each line with the PID of that process.
Usage (CLI)
npm install -g multiplexer
echo "\
while [ 1 ] ; do echo beep ; sleep 1 ; done
while [ 1 ] ; do echo boop ; sleep 1 ; done
while [ 1 ] ; do echo baap ; sleep 1 ; done" > example-commands
multiplexer example-commands
Output:
25242 beep
25244 boop
25246 baap
25242 beep
25244 boop
25246 baap
25242 beep
25244 boop
25246 baap
Usage (as a module)
npm install multiplexer
const multiplexer = require('multiplexer')
multiplexer([
'while [ 1 ] ; do echo beep ; sleep 1 ; done',
'while [ 1 ] ; do echo beep ; sleep 1 ; done',
'while [ 1 ] ; do echo beep ; sleep 1 ; done'
])
Instead of a string, each command can be an object with the following fields:
cwd
... Set working directoryenv
... Set of environment key-value pairsuid
... Run as User IDgid
... Run as Group IDdetached
... Detach from parent processalias
... Custom log prefix (default: process id)waitFor
... Wait for process to print given string to stdout before spawning next process