nprocs — Portable Network Process Viewer

Nprocs is a lightweight, portable shell tool that displays active network connections grouped by process in a clean, human-readable table. It works on macOS and Linux, using only standard UNIX tools and a POSIX-compatible shell.

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Installation

1. One-liner installation:

   mkdir -p ~/.local/bin && \
   curl -fsSL https://raw.githubusercontent.com/iocron/nprocs/main/nprocs -o ~/.local/bin/nprocs && \
   chmod +x ~/.local/bin/nprocs && \
   export PATH="$HOME/.local/bin:$PATH" && \
   echo "Installation complete! Run 'nprocs' to start."
   

2. Make sure .local/bin is in your shellprofile (~/.bash_profile or ~/.zshrc):

   export PATH="$HOME/.local/bin:$PATH"

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Features

• Groups network connections by process (PID)
• Displays:
  • File descriptor
  • Address family (IPv4 / IPv6)
  • Connection state (LISTEN, ESTABLISHED, etc.)
  • Local and remote endpoints
• Shows the full command line of each process
• Works with default awk (BSD and GNU)
• /bin/sh compatible (no Bash required)

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Example Output

PID 37662 /usr/bin/myapp
  FD   TYPE   STATE        LOCAL                     REMOTE
  4u   IPv4   LISTEN       127.0.0.1:61606           123.123.123.123