How to add a progress bar to a shell script?
When scripting in bash or any other shell in *NIX, while running a command that will take more than a few seconds, a progress bar is needed. For example, copying a big file, opening a big tar file. What ways do you recommend to add progress bars to shell scripts?
How to Monitor the Progress of Linux Commands (With pv and progress)
Instead of flying blind, use the Linux pv and progress commands to track a command's progress. These utilities will give you progress bars for commands that don't normally have any. You'll see an estimated time until completion, too. Starting a command from the terminal window can sometimes feel like a long-haul flight without a video screen. You have nothing to give any indication if all is well
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