🖥️at

➡️This is a command-line reference manual for commands and command combinations that you don’t use often enough to remember it. This cheatsheet explains the at command with important options and switches using examples.

2 minute read

▁ ▂ ▃ ▄ ꧁ 🔴☠ COMMANDLINE-KUNGFU WITH CHEATSHEETS ☠🔴꧂▅ ▃ ▂ ▁

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#==============================#
# CMD AT
#==============================##==============================#
# To schedule a one time task
at {time}
{command 0}
{command 1}
Ctrl-d

# {time} can be either
now | midnight | noon | teatime (4pm)
HH:MM
now + N {minutes | hours | days | weeks}
MM/DD/YY

# To list pending jobs
atq

# To remove a job (use id from atq)
atrm {id}

# Schedule a one-time task using "at" command and intuitive date specifications
at now + 30 minutes
# Explanation: 
    # The example will run something 30 minutes from now.
    # Another example: at 0815 wed -- run something at 8:15am on the next Wednesday.
    # With atq you can see the list of scheduled jobs, this is good to confirm that you specified the date correctly and the job will run when you want.
    # With atrm you can cancel scheduled jobs, using the job id as parameter, which you can find in the atq output.

#==============================##==============================#
# CMD AT
#==============================##==============================#

Cheatsheets are an excellent complement to other information sources like Linux man-pages, Linux help, or How-To’s and tutorials, as they provide compact and easily accessible information. While man-pages and detailed tutorials often contain comprehensive explanations and extensive guides, cheatsheets summarize the most important options forthe command at in a clear format. This allows users to quickly access the needed information for at without having to sift through lengthy texts. Especially in stressful situations or for recurring tasks, cheatsheets for at are a valuable resource to work efficiently and purposefully.

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