linux 命令 atq与 atrm 介绍
一：介绍
atq列出当前用户的at任务列表
atrm删除待执行任务队列中的指定任务
二：安装部署
root@meng:~# atq
Command 'atq' not found, but can be installed with:
apt install at
root@meng:~# atrm
Command 'atrm' not found, but can be installed with:
apt install at
root@meng:~# apt install at
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Suggested packages:
default-mta | mail-transport-agent
The following NEW packages will be installed:
at
0 upgraded, 1 newly installed, 0 to remove and 214 not upgraded.
Need to get 41.1 kB of archives.
After this operation, 166 kB of additional disk space will be used.
Get:1 http://mirrors.tuna.tsinghua.edu.cn/ubuntu jammy/universe amd64 at amd64 3.2.5-1ubuntu1 [41.1 kB]
Fetched 41.1 kB in 1s (47.4 kB/s)
Selecting previously unselected package at.
(Reading database ... 75008 files and directories currently installed.)
Preparing to unpack .../at_3.2.5-1ubuntu1_amd64.deb ...
Unpacking at (3.2.5-1ubuntu1) ...
Setting up at (3.2.5-1ubuntu1) ...
Created symlink /etc/systemd/system/multi-user.target.wants/atd.service → /lib/systemd/system/atd.service.
Processing triggers for man-db (2.10.2-1) ...
Scanning processes...
Scanning linux images...
Running kernel seems to be up-to-date.
No services need to be restarted.
No containers need to be restarted.
No user sessions are running outdated binaries.
No VM guests are running outdated hypervisor (qemu) binaries on this host.
三：案例介绍
root@meng:~# atq
1 Tue Aug 13 10:00:00 2024 a root
root@meng:~# at 11:00
warning: commands will be executed using /bin/sh
at Tue Aug 13 11:00:00 2024
at> ls /root
at> <EOT>
job 2 at Tue Aug 13 11:00:00 2024
root@meng:~# atq
2 Tue Aug 13 11:00:00 2024 a root
1 Tue Aug 13 10:00:00 2024 a root
root@meng:~# atq
2 Tue Aug 13 11:00:00 2024 a root
1 Tue Aug 13 10:00:00 2024 a root
root@meng:~# atrm 1
root@meng:~# atq
2 Tue Aug 13 11:00:00 2024 a root
root@meng:~#
