Linux Reader 4.5Ext 2/3/4, UFS2, HFS and ReiserFS/4 for Windows
Linux Reader 4.5
Ext 2/3/4, UFS2, HFS and ReiserFS/4 for Windows

How to use a date shell script

Here you will find out:

  • what a bash date command is
  • how to format the bash date and how to use these scripts
  • when DiskInternals can help you

Are you ready? Let's read!

What is a bash date command?

Simply put, this is a command used to print the current system date and time. Also, it can be used to set the date and time on a Linux system. The bash date command is among the core Linux utilities, and it prints the date and time zone when a Unix/Linux system is configured.

The current date and time

If you run the bash date command without including a variable, the result will look like what you see below:

How to format the bash date

There are different ways to format the output of a bash date command.

To get date and time in U.S. format (MM/DD/YY HH:MM:SS), use the code below:

Output:

If you want to get the date and time in a different format (e.g., YYYY-MM-DD HH:MM:SS):

How to use these scripts

The easiest way to learn how to run bash date scripts is to run date --help to print the help information.

The following describes the bash date options:


Format option Output
%a Abbreviated weekday name (e.g., Mon)
%A Full weekday name (e.g., Monday)
%b Abbreviated month name (e.g., Aug)
%B Full month name (e.g., August)
%c Abbreviated local date and time (e.g., Mon Jan 5 24:20:54 2019)
%F Full date in this format: %Y-%m-%d
%s Seconds
%u Day of the week (1-7), where 1 represents Monday, 2 is Tuesday, etc.
%U Week number of the year (00-53), where Sunday is treated as the first day of the week

Examples of using a bash date script

For all these examples, take note of the capital and small letters, because “M” and “m” do not mean the same thing.

Get date in MM-YYYY

Get date and time in MM/DD/YY HH:MM:SS

Get date in MM-DD-YYYY

Get time on Unix epoch format

Get date and time in YYYY-MM-DD HH:MM:SS

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