Question

How to use shell variables in perl command call in a bash shell script?

I have a perl command in my shell script to evaluate date -1.

How can i use $myDate in perl command call?

This is the section in my script:

myDate='10/10/2012'

Dt=$(perl -e 'use POSIX;print strftime '%m/%d/%y', localtime time-86400;")

I want use $myDate in place of %m/%d/%y.

Any help will be appreciated.

Thank you.

Answer 1

Variables from the shell are available in Perl's %ENV hash. With bash (and some other shells) you need to take the extra step of "exporting" your shell variable so it is visible to subprocesses.

mydate=10/10/2012
export mydate
perl -e 'print "my date is $ENV{mydate}
"'