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“a growing collection of the unix tools that nobody thought to write thirty years ago”

  • errno - look up errno names and descriptions
  • ifdata - get network interface info without parsing ifconfig output
  • ifne - Run command if the standard input is not empty
  • isutf8 - check whether files are valid UTF-8
  • lckdo - run a program with a lock held (see also flock)
  • mispipe - pipe two commands, returning the exit status of the first