Some very useful examples for grep
tweet.sh, a Twitter client written in simple Bash script
rlwrap is a 'readline wrapper', a small utility that uses the GNU
readline library to allow the editing of keyboard input for any
command. I couldn't find anything like it when I needed it, so I wrote
this one back in 1999. By now, there are (and, in hindsight, even
then there were) a number of good readline wrappers around, like rlfe,
distributed as part of the GNU readline library, and the amazing socat
(http://freecode.com/projects/socat). You should consider rlwrap
especially when you need user-defined completion (by way of completion word
lists) and persistent history, or if you want to program 'special
effects' using the filter mechanism. rlwrap compiles and runs on a
fairly wide range of Unix-like systems.
Inspired by a similar post by Ben Boyter this a list of useful command line tools that I use. It’s not a list of every tool I use. These are tools that are new or typically not part of a standard POSIX command line environment.
This post is a living document and will be updated over time. It should be obvious that I have a strong preference for fast tools without a large runtime dependency like Python or node.js. Most of these tools are portable to *BSD, Linux, macOS. Many also work on Windows. For OSes that ship up to date software many are available via the system package repository.