Ljackson at 05:07, 18 November 2020

Ljackson — Wed, 18 Nov 2020 05:07:58 GMT

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=== Echo date values current, past, future based on SYSTIME ===

<pre>
date --date='5 minutes ago'
date --date='24 hours ago'
date --date='24 hours ago' '+%b %d %T'
date --date='1 day ago' '+%b %d %T'
</pre>

<pre>
date -d '-1 day' '+%b %d %T'
date -d '-1 day' '+%b'
date -d '-24h' '+%b'
date -d '-24 h' '+%b'
date -d '-24 hours' '+%b'
</pre>

=== Convert 3 Char month text to integer ===

echo "Jan" | awk 'BEGIN{months=" JanFebMarAprMayJunJulAugSepOctNovDec"}{print index(months,$0)/3}'

Date - Revision history

Ljackson at 05:07, 18 November 2020