NOTE: This was tested on Ubuntu 20.04 LTS
I live in a Eastern Standard Time Zone and I want to change my server to reflect this! How? See below for the Tada! 😀
Below I crafted a handy Perl one liner to the rescue!
sudo perl -i"_$(date +%s).bak" -0777 -pse '$_ = $tz; END { system "$save && date" }' -- -tz='America/Toronto' -save='sudo dpkg-reconfigure --frontend noninteractive tzdata' /etc/timezone
Perl Parameter Breakdown:
- -i”_$(date +%s).bak” = Inline edit mode. The added syntax makes a backup of the file with an epoch timestamp.
- -0777 = This is equivalent to a file slurp, it loads all the contents into memory at once.
- -p = loop & print, this creates a while continue loop that auto prints the $_ variable, used in conjunction with -i it forces it to write to the file instead of STDOUT.
- -s = switch mode lets you create variables after the
--construct. For example -go=”contents” creates a $go variable. - -e = Execute the code wrapped in the single quote delimiter.
Time Zone Related Items
- /etc/timezone = location of the time zone info
- sudo dpkg-reconfigure –frontend noninteractive tzdata = the command that initializes the new configuration