Questions tagged [at]
A utility used for scheduling an event to happen once at some point in the future.
177 questions
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How to see the content of an appointment in a queue of commands of AT command
I know i can see the schedule with atq, but this brings me only the timedate of the execution and not wich command wil be executed.
[root@myserver ~]# atq
1Thu Oct 31 04:45:00 2024 a root
Using at -...
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How to execute mpg123 at given time with at
I was testing few things, nothing is working.
I have this command called ~/bin/beep for sound notifications.
#!/bin/bash
mpg123 -q /home/kuba/Pobrane/beep-6.mp3
I usually use it like this:
sleep 4m &...
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start command at given time interactively in terminal
is there similar command to sleep, but where I can specify given time, so that my command will start at given time, INTERACTIVELY in my current open terminal window?
I know about at command, but that ...
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"at" command does not run desired program / script
I am trying to learn scheduling with the "at" command, and therefore, I want to test it out and keep things simple.
For example, when I type "at 00:28" (my time zone's format), and ...
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Can't shutdown Linux guest OS with `at` command
Here are three examples of what I did inside the terminal
(the third one has sudo):
at now + 5 minutes
(interactively:)
at> shutdown --poweroff now
echo "sbin/shutdown -h now" | at 14:...
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97
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How to run a one-off command at a specified future time in Guix?
I want to run a shell command once at a specific time in the future on Guix. My idea was to use the at command, but that seems to not be available on Guix.
The imperative nature of my desire goes ...
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How does at behave when going off the end of a month with a relative date?
When using at midnight next month and it is the 31 of January, how will it behave?
Will it be the 4th of March or 28 of February? or the 31 of March?
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at jobs: queue IDs and job files
root@calleva:/var/spool/cron/atjobs# echo "sleep 3000" | at 20:58
warning: commands will be executed using /bin/sh
job 161 at Sat Jun 3 20:58:00 2023
root@calleva:/var/spool/cron/atjobs# ...
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59
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How can Linux "at" be used to open a gnome-terminal window?
Using "at" to execute a shell command that writes to a file works. Using it to open a gnome-terminal does not work.
OS: Ubuntu 20.04
A file containing a command to write the date to a file ...
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How does atd store its job schedule?
On CentOS, scheduled at jobs are clearly stored in /var/spool/at, one file per job. However, what's not clear is where the start times for the jobs are stored. Job file names are a 14 character hex ...
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Listing 'at' jobs with custom time format
Hello I need to list 'at' jobs with the following format "year-month-day hours:minutes:seconds". From the 'at' man page the synopsis I need is the following:
at [-V] -l [-o timeformat] [job ...
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76
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Why does the at command not control my wifi via nmcli?
I have at installed on Manjaro. This works fine:
echo "echo 'hi' > /tmp/greetings" | at now + 1 minutes -M
But if I try to switch off my wifi after one minute it doesn't do anything:
...
- 183
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show command details with at
I am very new to using at and am wondering how to display the command by a scheduled job.
postgres@dcjsn-jv2526:/opt/db/backup/postgres/dumps> atq
29 Wed Nov 2 18:55:00 2022 a postgres
I see ...
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Delete jobs from at queue on startup
I'm on Ubuntu 18.04.6 LTS and I have a cronjob that schedules automatic shutdown commands to a specific at queue every minute:
$ crontab -e
*/1 * * * * [ -z "$(w -h)" ] && echo "...
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Is there a user-level utility which offers the features of "cron" or "at" and only within a particular session?
I want to run a some scheduled commands on a timed basis within a manually startedscreen session and only within that screen session, because it uses an ssh authentication tied to that session.
...
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Running `at` commands with macOS Shortcuts
I have a shortcut that I want to run in x minutes. I can run the shortcut from the command line as follows:
shortcuts run "turn lights off"
When I try to schedule it using at however, like ...
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726
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atd Job Didn't Run at Scheduled Time
I scheduled a one-time job with atd on an OracleLinux 7 server. However, it's still in the queue after the system clock has passed the scheduled time.
# atq
2 Mon Mar 14 00:00:00 2022 a root
# ...
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`atq` lists a job even if it was executed yesterday
I created an at job that executes a script with the -f flag. The script restarts tomcat. The job was scheduled to be executed at Feb 21 18:00:00 2022 which was yesterday. I just confirmed tomcat was ...
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What is the easiest way to run a program from time X to time Y?
There is a certain potentially failing process that I want to run until it succeeds, during the night time, say, from 23:00 to 7:00, but not later.
A possible solution would be to:
Add a cron job for ...
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What is the most efficient way to run a task every X hours of runtime, accumulated over all power-ons?
Let us assume that I have a machine which wakes up at 7:00, does some work, usually for 15 minutes, but sometimes for days (e.g., experiment supervision), and after the works is done, it powers ...
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Running at command ran the script immediately
I tried to use "at" command to stop and start the server at the certain time, but for some reason the script ran immediately. I tried different ways to do that, but it would always run. What ...
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Why doesn't the following call to 'at' execute the bash script?
I made a bash script called test.sh that contains the following:
#!/#bin/bash
echo "Done!"
I enter bash test.sh | at 1549:
myusername@machine:path$ bash test.sh | at 1549
warning: commands ...
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'at' job fails: Script not found in the directory (raspberry pi)
I am trying to run an 'at' job. The job is in ~/mydir/first.sh. It executes second.sh using (sh second.sh) which is in the same directory. I get an error saying that the file is not found.
This is ...
- 219
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using systemd-run to replace 'at' commands
What is the best way of using systemd-run in place of a simple
sudo -u xxx at -f backupJ-447.cmd 03:10
Our org has gone systemd mad and no longer installs 'at', 'batch' and cron is depricated on our ...
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What happens to at-scheduled job when PC is off? [duplicate]
Say I have job scheduled via at - what happens when the PC is off during that scheduled time?
Will the job be caught up for during reboot? Does this have to be specified?
Or comparing this to cron: Is ...
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How to check runtime log for a batch job submitted using `at` command?
I submit the batch job in Ubuntu 20.
at now -f myscript.sh
I get an email with a log when the job is completed. But for a time-spending job, I would like to see progress during the execution. How can ...
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260
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Pipe output of "at" delayed command to a file
I want to append to a file in a few minutes' time.
I naively thought I could do:
echo "hello world" >> /tmp/foo.txt | at NOW + 1 MINUTE
But that appends to the file immediately.
I ...
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122
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How to make `at` command to understand the bash alias or function?
I am having a function written inside bashrc like -
function build_image ()
{
...
}
This function will trigger compilation of the source code.
Now I need to trigger this image building/compilation ...
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How to run bash script with at command on freebsd
I have a bash script that it should start at a specific time. I used from at command. When I run it with at, the job create and after the time the job start but it doesn't do it's work. When I run the ...
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Bash script is not working when using case statement to make decision
I have the following script that will schedule a job based on input from the file "schedule.csv". The file contains 7 fields and the $f7 field contains a flag that either has "NOT_S&...
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sshpass Solaris one liner passing a command
I am trying to pass one liner sshpass command to Solaris box but won't work. those are the options I tried:
sshpass -p "passw" ssh "[email protected]" -o StrictHostKeyChecking=no `...
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213
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Why does $ echo "Testing" | write user pts/0 | at now + 1 min execute instantly?
I want to integrate the at command into a script, but that script is reliant upon the write command executing at the right time. So far, every time I try to do this, it just writes instantly, not at ...
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At command doesn't run scripts with f key
I tried to schedule a task with at command using the following:
at now + 1 minute -f alarm.sh
It didin’t run a chosen script. Then I tried:
echo "./alarm.sh" | at now + 1 minute
It didn’t ...
- 101
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83
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How to schedule an at job to take place in the past?
I have an interesting situation where it would be useful to schedule an at job in the past, to be triggered after a reboot on a system that doesn't maintain a real-time clock during power-down.
If I ...
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590
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Setting verbose option for at(1) and batch(1) commands
I'm trying to set automatically the verbose and xtrace options for shells which are reading their commands from a standard input which is not connected to a terminal (that test is a proxy for being ...
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“at” command does not execute shell script
I want to run a script at a specific time. I found that at command is the solution but the shell script i attached with it is not being executed. I used below multiple commands but no use.
echo "`...
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Command-line completion while using the 'at' command
When entering commands into the at> prompt, I am unable to activate command-line autocompletion using the Tab key.
$ at now + 4 hour
at>
Is there a way to turn on tab completion in the at>...
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Cannot turn on atrun to use "at" commands
In Mac OS 10.15.5, I can run the command:
echo "mkdir foldername" | at now + 1 minute
and it "runs" (i.e. it doesn't give me any error), and when I run atq, it lists it in the ...
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Why does `at` not execute GUI applications?
On my Ubuntu 20 desktop, I've scheduled gedit to run a minute from now, but nothing happens. Why is that?
$ echo "echo foo > at.sux" | at now + 1
warning: commands will be executed using /bin/sh
...
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Within a shell script, how can I schedule a function to run at a specified time?
In a bash script, I have some code that needs to run when the script is executed, then a function that I want executed at a specific time. How can I do that?
# Do this now
read -s -p "Password: " ...
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How to find out what a specific at job will do?
Is there a way to find out what an at job will do?
atq only gives the time and owner.
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at & rm - command executed before pipe
System: Redhat 7.8
Goal: I have a bash script which downloads a files to a folder named "logs" for viewing for a short time and removes them at the end of the day.
What I've tried:
rm -rfd logs | ...
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Pass the "at" command a string command instead of a path to a script whilst having it run immediately
Using the at command I can run a script once in the future:
at now + 1 minutes -f ~/script.sh
or run a string command now then return the result in the future:
echo "xyz" >> ~/testtest.txt | ...
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how to schedule a task that runs a command or script when a user logs on?
I want to program a script that is launched whenever a specific user, let's call it user log in.
For example, when you log on to the computer with that user or using the su command on a terminal.
I ...
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Custom id for "at" jobs
I've been using at to schedule emails to be sent at a specific date and time. Problem is that the command that I wish at to execute should take the job id as a parameter hence why I should be the one ...
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Is there a limit to the number of jobs that I can queue using "at"?
I'm using at to schedule email reminders. The number of jobs that I could queue could be several thousands at a time. Is this possible or do I have to find another solution?
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Schedule a script with arguments using 'at'
I have a bash script and I want to run it at a given time.
Usually I would write something like this to run it immediately:
./my_script.sh 1 1 n 8 3 keywords here
I am trying to execute the same ...
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Remove connman without disrupting ethernet connection
For a bunch of historical and justifiable reasons, I have a situation where I need to programmatically configure a device with a fresh Debian installation, over a ssh connection. Think of it like a ...
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How to pass command line arguments to bash script when executing with at?
I have a bash script needs run at a specific time and found out at is pretty much does what I need to do. But the problem is I'm not sure how can I pass command line arguments to the bash script ...
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Can i access the environment variables set when a script is added to linux "at" command queue?
I wanted to know if I can access the custom env variables that are set while adding a script to the "at" command queue before it runs ? I understand that certain system env variables like: TERM, ...
