Created
October 1, 2010 21:34
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#!/usr/bin/env ruby | |
require 'optparse' | |
# Parse arguments | |
OPTIONS = {} | |
op = OptionParser.new do |x| | |
x.banner = 'killjava [-9] [-n] [java_main_class]' | |
x.separator '' | |
x.on("-9", "--KILL", "Send KILL signal instead of TERM") do | |
OPTIONS[:kill] = true | |
end | |
x.on("-n", "--no-prompt", "Do not prompt user, kill all matching processes") do | |
OPTIONS[:no_prompt] = true | |
end | |
x.on("-h", "--help", "Show this message") do | |
puts op | |
exit | |
end | |
end | |
op.parse!(ARGV) | |
OPTIONS[:main_class] = ARGV.first | |
# Figure out terminal characteristics | |
lines, columns = `stty size`.split.map { |x| x.to_i } rescue [25, 80] | |
# Obtain list of java processes | |
processes = `jps -lv`.split("\n") | |
# Print/filter process ids | |
pids = [] | |
i = 0 | |
processes.each do |p| | |
main = p.split(" ")[1] | |
if !OPTIONS[:main_class] || main[OPTIONS[:main_class]] | |
pids << p.split(" ")[0].to_i | |
command = p.split(" ").drop(1).join(" ") | |
puts "#{i}: #{command[0..columns-7]}" # display 1-line per process | |
i += 1 | |
end | |
end | |
if pids.size == 0 && OPTIONS[:main_class] | |
puts "No matching processes" | |
exit | |
end | |
if pids.size == 0 | |
puts "No Java processes" | |
exit | |
end | |
def kill(pid) | |
cmd = ["kill"] | |
cmd << "-9" if OPTIONS[:kill] | |
cmd << pid | |
cmd = cmd.join(" ") | |
puts cmd | |
`#{cmd}` | |
end | |
def invalid() | |
puts "Invalid process" | |
exit | |
end | |
if OPTIONS[:no_prompt] | |
# Kill all matching processes | |
pids.each { |pid| kill(pid) } | |
else | |
puts "Kill which java process?" | |
pid = STDIN.gets | |
if pid && pid.chomp != "" | |
pid = Integer(pid) rescue invalid | |
invalid if (pid < 0) || (pid >= pids.size) | |
kill(pids[pid]) | |
end | |
end |
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