Shell Scripting / Bash Tricks
Stop losing your place in deep shell pipelines
🧩 The Challenge
You know the pain of piping a command into three different tools and then realizing you have no idea where the data got mangled halfway through. I’ve spent way too many nights staring at broken outputs because I couldn’t see what the middle step actually produced.
đź’ˇ The Fix
Use the pipe viewer tool to stick a window in the middle of your chain so you can watch the data flow without breaking your command. It acts like a transparent screen that lets you count lines or monitor throughput on the fly.
command1 | pv -l | command2 > output.txt⚙️ Why It Works
Adding that middle link forces the data stream through a buffer that calculates statistics for you before passing it along to the next binary. It’s essentially a read-only tap that doesn’t mess with the integrity of your piped output.
🚀 Pro-Tip: Use the -N flag to give your pipe a name if you are running multiple monitoring windows at once.
Linux Tips & Tricks | © ngelinux.com | 7/18/2026