linux 清理semaphores ruby脚本 | 张志明的个人博客




		
		
			
			
Ruby
			
			#!/usr/bin/env oo-ruby
#
#
#

require 'etc'

def get_ps_users()
    uids = %x[ps -o user -e].split("\n").grep(/^[1-6]{4}/).uniq!
    usernames = uids.collect do |uid|
        Etc.getpwuid(uid.to_i).name
    end
    return usernames
end

def main()
    kernel_sem = %x[/sbin/sysctl kernel.sem].split[-1]

    results = %x[ /usr/bin/ipcs -s -c].split("\n")[1..-1]
    user_semaphores = Hash.new(Array.new)
    results.each do |result|
        values = result.split
        next unless values[2] =~ /[a-z0-9]{24}/
        user_semaphores[values[2]] += [values[0]]
    end

    users_with_procs =  get_ps_users()

    users_without_procs = user_semaphores.keys - users_with_procs

    all_semaphores = []
    users_without_procs.collect do |user|
        all_semaphores += user_semaphores[user]
    end

    cmd_str = ("-s %s " * all_semaphores.size) % all_semaphores
    puts %x[/usr/bin/ipcrm #{cmd_str}]

    puts "Cleaned #{all_semaphores.size} semaphores."
end


if __FILE__ == $0
    main()
end
			
				
					
				
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						#!/usr/bin/env oo-ruby
#
#
#
 
require 'etc'
 
def get_ps_users()
    uids = %x[ps -o user -e].split("\n").grep(/^[1-6]{4}/).uniq!
    usernames = uids.collect do |uid|
        Etc.getpwuid(uid.to_i).name
    end
    return usernames
end
 
def main()
    kernel_sem = %x[/sbin/sysctl kernel.sem].split[-1]
 
    results = %x[ /usr/bin/ipcs -s -c].split("\n")[1..-1]
    user_semaphores = Hash.new(Array.new)
    results.each do |result|
        values = result.split
        next unless values[2] =~ /[a-z0-9]{24}/
        user_semaphores[values[2]] += [values[0]]
    end
 
    users_with_procs =  get_ps_users()
 
    users_without_procs = user_semaphores.keys - users_with_procs
 
    all_semaphores = []
    users_without_procs.collect do |user|
        all_semaphores += user_semaphores[user]
    end
 
    cmd_str = ("-s %s " * all_semaphores.size) % all_semaphores
    puts %x[/usr/bin/ipcrm #{cmd_str}]
 
    puts "Cleaned #{all_semaphores.size} semaphores."
end
 
 
if __FILE__ == $0
    main()
end