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If you’ve ever used GNU/Linux, chances are good that you’ve used bash. Some people hold the belief that using a GUI is faster than using a CLI. These people have obviously never seen someone who uses a shell proficiently. In this tutorial, I hope to show you just a few of the amazing features bash provides that will increase your productivity in the shell. Bang Bang and history Everyone knows abou
For the last three and a half years, every single command I’ve run from the command line on my MacBook Pro has been logged to a set of log files. Uncompressed, these files take up 16 MB of disk space on my laptop. But the return I’ve gotten on that small investment is immense. Being able to go back and find any command you’ve run in the past is so valuable, and it’s so easy to configure, you shoul
By default, the Bash shell keeps the history of your most recent session in the .bash_history file, and the commands you’ve issued in your current session are also available with a history call. These defaults are useful for keeping track of what you’ve been up to in the shell on any given machine, but with disks much larger and faster than they were when Bash was designed, a little tweaking in yo
Say, I have a script that gets called with this line: ./myscript -vfd ./foo/bar/someFile -o /fizz/someOtherFile or this one: ./myscript -v -f -d -o /fizz/someOtherFile ./foo/bar/someFile What's the accepted way of parsing this such that in each case (or some combination of the two) $v, $f, and $d will all be set to true and $outFile will be equal to /fizz/someOtherFile?
Rerun is a simple framework that turns loose shell scripts into modular automation. Rerun will help you organize your scripts into user friendly commands. Collections of rerun modules can be archived and delivered as a single executable or as RPMs or Debian packages to facilitate handoffs between teams. The included "stubbs" module, helps you develop your own rerun modules, generating option parsi
Well, what now? We got the dreaded “argument list too long” error. What to do? To explain the problem, let’s consider what the shell does (we won’t get into system calls, to make things simple). The shell (Bourne compatible shells, actually) will first scan the line typed in. One of the first things to do is to expand file globs. For example, the command: ls a* will be translated by the shell into
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