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So I was writing some sh script, and I wanted to to grab some token offset from the end of a line delimited by a give character. I was trying to figure out how to do this using the standard tools, and I stumbled upon a profound and simple truth: some of these tools are a pain in the ass!
I set out to write a tool to do the job myself, but it turns out someone's beaten me to the punch! Enter fex.
example:
$ echo one/two/three/four/five | fex 0/{1,2,3,-2,-1}
one two three four fiveDoes one thing and does it well. What a concept! :P
Grab the pkgbuild.
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That'll be fun:
[karol@black ~]$ echo one/two/three/four/five | tr '/' ' '
one two three four fiveIt's a new "Hello world!" test :-)
[karol@black ~]$ echo one/two/three/four/five | cut -d'/' --output-delimiter=' ' -f1-5
one two three four fivefex is a pretty neat app, but I'm not convinced that the standard tools are insufficient.
Last edited by karol (2012-02-16 07:27:55)
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$ echo one/two/three/four/five | sed 's:/: :g'
one two three four five:D
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fex is a pretty neat app, but I'm not convinced that the standard tools are insufficient.
I didn't say they were insufficient, I said they were a pain in the ass, more so for this particular purpose than they need to be.
Cut and fex solve similar problems, but cut cannot offset from the end of a line, a pretty big oversight (plus fex is nicer.). tr and sed are solving completely different problems in these examples. I'm sure we can some up with a million ways to replace slashes with spaces in unix. That they have the same effect in this example is a coincidence, and that wont be the case for variable inputs. I don't doubt it's possible (I know for a fact that it is), but I couldn't figure it out. One day I'll sit down and dedicate the whole day to learning awk. Scouts honor. :P
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