update stored variables in shell script

Question

I am doing a simple script. I have to update the stored date value. For example

ss=date; sleep 5; echo $ss;

It is showing old date. How to update the date after 5 seconds

Nahuel Fouilleul · Accepted Answer · 2017-10-18 08:50:52Z

0

to update a variable it must be re assing: $(..) is a command substitution it is expanded to output of specified command.

ss=$(date)
...
ss=$(date)

SECONDS is a special variable which contains the number of seconds since bash process is running, to have a value changed every 5 seconds, following can be used.

echo $((SECONDS/5))

answered Oct 18, 2017 at 8:50

Nahuel Fouilleul

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2 Comments

Brighter side Over a year ago

duplicate from stackoverflow.com/questions/10402537/change-variables-in-bash

peer mohammed Over a year ago

Thanks Nahuel. how to reassign the same variable. If i am having an variable a=date;if i am going call in a loop after some time. how to reassign the current date. is there any other way

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