JavaScript Forever Loop
while(0 == 0) {
//whatever
}
Cautious Cardinal
while(0 == 0) {
//whatever
}while (true) {
//your code
} $ forever --help
usage: forever [action] [options] SCRIPT [script-options]
Monitors the script specified in the current process or as a daemon
actions:
start Start SCRIPT as a daemon
stop Stop the daemon SCRIPT by Id|Uid|Pid|Index|Script
stopall Stop all running forever scripts
restart Restart the daemon SCRIPT
restartall Restart all running forever scripts
list List all running forever scripts
config Lists all forever user configuration
set <key> <val> Sets the specified forever config <key>
clear <key> Clears the specified forever config <key>
logs Lists log files for all forever processes
logs <script|index> Tails the logs for <script|index>
columns add <col> Adds the specified column to the output in `forever list`. Supported columns: 'uid', 'command', 'script', 'forever', 'pid', 'id', 'logfile', 'uptime'
columns rm <col> Removed the specified column from the output in `forever list`
columns set <cols> Set all columns for the output in `forever list`
cleanlogs [CAREFUL] Deletes all historical forever log files
options:
-m MAX Only run the specified script MAX times
-l LOGFILE Logs the forever output to LOGFILE
-o OUTFILE Logs stdout from child script to OUTFILE
-e ERRFILE Logs stderr from child script to ERRFILE
-p PATH Base path for all forever related files (pid files, etc.)
-c COMMAND COMMAND to execute (defaults to node)
-a, --append Append logs
-f, --fifo Stream logs to stdout
-n, --number Number of log lines to print
--pidFile The pid file
--uid DEPRECATED. Process uid, useful as a namespace for processes (must wrap in a string)
e.g. forever start --uid "production" app.js
forever stop production
--id DEPRECATED. Process id, similar to uid, useful as a namespace for processes (must wrap in a string)
e.g. forever start --id "test" app.js
forever stop test
--sourceDir The source directory for which SCRIPT is relative to
--workingDir The working directory in which SCRIPT will execute
--minUptime Minimum uptime (millis) for a script to not be considered "spinning"
--spinSleepTime Time to wait (millis) between launches of a spinning script.
--colors --no-colors will disable output coloring
--plain Disable command line colors
-d, --debug Forces forever to log debug output
-v, --verbose Turns on the verbose messages from Forever
-s, --silent Run the child script silencing stdout and stderr
-w, --watch Watch for file changes
--watchDirectory Top-level directory to watch from
--watchIgnore To ignore pattern when watch is enabled (multiple option is allowed)
-t, --killTree Kills the entire child process tree on `stop`
--killSignal Support exit signal customization (default is SIGKILL),
used for restarting script gracefully e.g. --killSignal=SIGTERM
Any console output generated after calling `forever stop/stopall` will not appear in the logs
-h, --help You're staring at it
[Long Running Process]
The forever process will continue to run outputting log messages to the console.
ex. forever -o out.log -e err.log my-script.js
[Daemon]
The forever process will run as a daemon which will make the target process start
in the background. This is extremely useful for remote starting simple node.js scripts
without using nohup. It is recommended to run start with -o -l, & -e.
ex. forever start -l forever.log -o out.log -e err.log my-daemon.js
forever stop my-daemon.js
while(2 == 2) {
//your code here
}x = 2;
while (x == x) {
//please add your code here
}while (1 == 1) {
// Add the code for the forever loop
}