Initial commit

.gitignore

@@ -0,0 +1,3 @@
+*.o
+mon.log
+mon

History.md

@@ -0,0 +1 @@
+

Makefile

@@ -0,0 +1,22 @@
+
+PREFIX = /usr/local
+SRC = src/mon.c
+OBJ = $(SRC:.c=.o)
+CFLAGS = -D_GNU_SOURCE -std=c99
+
+mon: $(OBJ)
+	$(CC) $^ -o $@
+
+%.o: %.c
+	$(CC) $< $(CFLAGS) -c -o $@
+
+install: mon
+	cp -f mon $(PREFIX)/bin/mon
+
+uninstall:
+	rm -f $(PREFIX)/bin/mon
+
+clean:
+	rm -f mon $(OBJ)
+
+.PHONY: clean install uninstall

Readme.md

@@ -0,0 +1,56 @@
+
+# mon(1)
+
+  Super-simple monitoring program.
+
+  Effectively all it does is daemonize some programs,
+  re-executing the program on failure, write pidfiles,
+  and provide status checks.
+
+## Installation
+
+```
+$ make install
+```
+
+## Usage
+
+```
+
+Usage: mon [options] <cmd>
+
+Options:
+
+  -s, --sleep <sec>    sleep seconds before re-executing [1]
+  -S, --status         check status of --pidfile
+  -l, --log <file>     specify logfile [mon.log]
+  -d, --daemonize      daemonize the program
+  -p, --pidfile <path> write pid to <path>
+  -P, --prefix <str>   add a log prefix <str>
+  -v, --version        output program version
+  -h, --help           output help information
+
+```
+
+## Example
+
+  `mon(1)` is designed to monitor a single program only, this means a few things,
+  firstly that a single `mon(1)` may crash and it will not influence other programs,
+  secondly that the "configuration" for `mon(1)` is simply a shell script,
+  no need for funky weird inflexible DSLs.
+
+```bash
+#!/usr/bin/env bash
+
+pids="/var/run"
+app="/www/example.com"
+
+mon -d redis-server -p $pids/redis.pid
+mon -d "node $app/app" -p $pids/app-0.pid
+mon -d "node $app/jobs" -p $pids/jobs-0.pid
+mon -d "node $app/jobs" -p $pids/jobs-1.pid
+mon -d "node $app/jobs" -p $pids/jobs-2.pid
+mon -d "node $app/image" -p $pids/image-0.pid
+mon -d "node $app/image" -p $pids/image-1.pid
+mon -d "node $app/image-broker" -p $pids/image-broker.pid
+```

example.sh

@@ -0,0 +1,9 @@
+
+echo one
+sleep 2
+echo two
+sleep 2
+echo three
+sleep 2
+echo exiting
+exit 1