ruby - 打印作业编程未取消

Question

我创建了一个程序，它将扫描用户指定的服务器并输出该服务器上的打印作业列表，从那里它将输出所有早于 2016 年的作业，以及 gsub直到工作 ID 号。

然后它应该做的是取消作业，但它正在做的是说:

Cancelling job: 829116
cancel: cancel-job failed: Job #829116 does not exist!
Cancelling job: 795259
cancel: cancel-job failed: Job #795259 does not exist!
Cancelling job: 795260
cancel: cancel-job failed: Job #795260 does not exist!
Cancelling job: 797216
cancel: cancel-job failed: Job #797216 does not exist!
Cancelling job: 797217
cancel: cancel-job failed: Job #797217 does not exist!

当它确实存在时，如果我转到特定服务器并运行 prt_jobs，作业就会弹出。示例:

#On the server I ran prt_jobs
cdprt11-829116          dij             244736   Mon Aug 24 06:07:12 2015
closing_2-795259        dlc             228352   Tue Jul 28 13:43:08 2015
closing_2-795260        dlc             228352   Tue Jul 28 13:44:05 2015
closing_2-797216        tkb             286720   Wed Jul 29 13:56:27 2015
closing_2-797217        tkb             250880   Wed Jul 29 13:56:41 2015

谁能告诉我为什么它不取消指定的作业？

来源:

#!/usr/local/bin/ruby

require 'rubygems'
require 'net/ssh'
require 'etc'

class PrintJobs

 HOST = ARGV[0]
 USERNAME = Etc.getlogin
 PASSWORD = nil

 def scan_for_jobs
   check_jobs = Net::SSH.start(HOST, USERNAME, :password => PASSWORD) do |ssh|
     cmd = "prt_jobs"
     info = ssh.exec!(cmd)
     if info == nil
       puts "No print jobs on server #{HOST}"
     else
       res = info.split("\n").reject {|line| line.match(/\s+2016/s+/)}.join("\n")
       puts res
       print "Process into kill que: "
       input = STDIN.gets.chomp.upcase
       if input == "YES"
         kill_que(check_jobs, res)
       else
         exit 1
       end
     end
   end
 end

 def kill_que(check_jobs, res)
   puts "Loading jobs into kill que.."
   column = 0
   job_ids = res.lines.map { |job| job.split(/\s+/)[0] }.each do |task_id|
     kill_jobs(task_id)
   end
 end

 def kill_jobs(task_id)
    id_to_strip = task_id.gsub(/\-/," ")
    column = 1
    stripping_id = id_to_strip.lines.map { |task| task.split(/\s+/)[1] }.each do |id|
      id.strip
      puts "Cancelling job: #{id}"
      `sudo cancel #{id}`
      # puts id
    end
  end
end

test = PrintJobs.new
test.scan_for_jobs

Answer 1

正如问题评论中所指出的，cancel 命令是在本地服务器上发出的，而不是在远程服务器上发出的。您需要将 ssh 对象传递给 kill_jobs 并在 ssh 连接上执行命令。

第 1 步:将 ssh 传递给 kill_que 方法。

   if input == "YES"
     kill_que(ssh, check_jobs, res)  # *** Pass ssh object

第 2 步:更新kill_que 方法以使用ssh 对象

def kill_que(ssh, check_jobs, res)
   puts "Loading jobs into kill que.."
   column = 0
   job_ids = res.lines.map { |job| job.split(/\s+/)[0] }.each do |task_id|
     kill_jobs(ssh, task_id)  # *** Pass ssh to kill_jobs
   end
end

第 3 步:在 kill_jobs 中使用 ssh

def kill_jobs(ssh, task_id)
    id_to_strip = task_id.gsub(/\-/," ")
    column = 1
    stripping_id = id_to_strip.lines.map { |task| task.split(/\s+/)[1] }.each do |id|
      id.strip
      puts "Cancelling job: #{id}"
      ssh.exec!("sudo cancel #{id}")  # *** Issue this command via ssh
      # puts id
    end
end