Date: Difference between revisions
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=Internal= | =Internal= | ||
* [[Linux#Commands|Linux Commands]] | * [[Linux#Commands|Linux Commands]] | ||
* [[gdate]] | |||
=Overview= | =Overview= | ||
< | <syntaxhighlight lang='bash'> | ||
date +'%m/%d/%y %H:%M:%S' | date +'%m/%d/%y %H:%M:%S' | ||
</ | </syntaxhighlight> | ||
Output: | Output: | ||
03/07/11 16:07:17 | |||
03/07/11 16:07:17 | |||
</ | Double quotes also work: | ||
<syntaxhighlight lang='bash'> | |||
date +"%m/%d/%y %H:%M:%S" | |||
</syntaxhighlight> | |||
This also works: | |||
<syntaxhighlight lang='bash'> | |||
date "+%m/%d/%y %H:%M:%S" | |||
</syntaxhighlight> | |||
=Output Patterns= | |||
%s seconds since epoch (?) | |||
==Time Zone== | |||
+%z | |||
-0700 | |||
=AM/PM= | =AM/PM= | ||
| Line 28: | Line 49: | ||
Long year (2014) %Y | Long year (2014) %Y | ||
=Month= | |||
%m | |||
=Hour= | |||
24-hour hour: %H | |||
=Displaying Date in a Different Timezone= | |||
Configure the desired timezone by setting up the TZ environment variable: | |||
<syntaxhighlight lang='bash'> | |||
TZ="America/Los_Angeles" | |||
</syntaxhighlight> | |||
To list available timezones, either list files in /usr/share/zoneinfo or run: | |||
<syntaxhighlight lang='bash'> | |||
timedatectl list-timezones | |||
</syntaxhighlight> | |||
=File Name Format= | =File Name Format= | ||
date +'%y.%m.%d-%H.%M.%S' | |||
date +'%y.%m.%d-%H.%M.%S' | |||
or | |||
date +'%Y.%m.%d' | |||
=Setting Date and Time= | =Setting Date and Time= | ||
| Line 49: | Line 93: | ||
=Elapsed Time in Seconds= | =Elapsed Time in Seconds= | ||
Also see | <syntaxhighlight lang='bash'> | ||
local t0 t1 elapsed | |||
t0=$(date '+%s') | |||
sleep 2 | |||
t1=$(date '+%s') | |||
elapsed=$(("${t1}"-"${t0}")) | |||
echo "elapsed seconds: ${elapsed}" | |||
</syntaxhighlight> | |||
=ISO 8601 Format= | |||
date "+%Y-%m-%dT%H:%M:%S%z" | |||
Also see: {{Internal|Gdate#ISO_8601_Date_Format|gdate ISO 8601 Format}} | |||
Latest revision as of 21:05, 15 March 2024
External
Internal
Overview
date +'%m/%d/%y %H:%M:%S'
Output:
03/07/11 16:07:17
Double quotes also work:
date +"%m/%d/%y %H:%M:%S"
This also works:
date "+%m/%d/%y %H:%M:%S"
Output Patterns
%s seconds since epoch (?)
Time Zone
+%z
-0700
AM/PM
date +'%m/%d/%y %I:%M:%S %p'
Year
Short year (14) %y
Long year (2014) %Y
Month
%m
Hour
24-hour hour: %H
Displaying Date in a Different Timezone
Configure the desired timezone by setting up the TZ environment variable:
TZ="America/Los_Angeles"
To list available timezones, either list files in /usr/share/zoneinfo or run:
timedatectl list-timezones
File Name Format
date +'%y.%m.%d-%H.%M.%S'
or
date +'%Y.%m.%d'
Setting Date and Time
date 08311650
sets the date for 08/31 current year, time 16:50.
Getting the Time in Seconds
date '+%s'
Elapsed Time in Seconds
local t0 t1 elapsed
t0=$(date '+%s')
sleep 2
t1=$(date '+%s')
elapsed=$(("${t1}"-"${t0}"))
echo "elapsed seconds: ${elapsed}"
ISO 8601 Format
date "+%Y-%m-%dT%H:%M:%S%z"
Also see: