How To Install "flex-old" Package on Ubuntu

Quick Install Instructions of flex-old on Ubuntu Server. It’s Super Easy! simply click on Copy button to copy the command and paste into your command line terminal using built-in APT package manager.

See below for quick step by step instructions of SSH commands, Copy/Paste to avoid miss-spelling or accidently installing a different package.


Quick Install Steps:
Step 1
sudo apt-get update -y
Step 2
sudo apt-get install -y flex-old
Step 3
Check the system logs to confirm that there are no related errors. You can use ZoomAdmin to check the logs, manager servers, host multiple websites and apps on your servers and more. The apps run in docker containers, to learn more
see ZoomAdmin Features for list of features and demo videos. And you can start with the Free Plan.
Execute the commands above step by step. You can simply hit the copy button to copy the command and paste into the command line interface.
Note: -y flag means to assume yes and silently install, without asking you questions in most cases.

Old version of the fast lexical analyzer generator
flex is a tool for generating scanners: programs which recognize lexical patterns in text. This is the old 2.5.4a version, which is no longer being developed. You should normally choose flex, unless you have legacy lexer files that do not work with a modern flex. Old version of the fast lexical analyzer generator
flex is a tool for generating scanners: programs which recognize lexical patterns in text. This is the old 2.5.4a version, which is no longer being developed. You should normally choose flex, unless you have legacy lexer files that do not work with a modern flex.

Detailed Instructions:
Step 1
Run update command to update package repositories and get latest package information.
sudo apt-get update -y
Step 2
Run the install command with -y flag to quickly install the packages and dependencies.
sudo apt-get install -y flex-old
Step 3
Check the system logs to confirm that there are no related errors. You can use ZoomAdmin to check the logs, manager servers, host multiple websites and apps on your servers and more. The apps run in docker containers, to learn more
see ZoomAdmin Features for list of features and demo videos. And you can start with the Free Plan.