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Rot13 using the tr command

Terminal - Rot13 using the tr command
alias rot13="tr '[A-Za-z]' '[N-ZA-Mn-za-m]'"
2009-03-30 19:08:49
User: penpen
Functions: alias
Rot13 using the tr command

rot13 maps a..mn..z (A..MN..Z) to n..za..m (n..za..m) and so does this alias.


There are 3 alternatives - vote for the best!

Terminal - Alternatives
alias rot13="tr a-zA-Z n-za-mN-ZA-M"
function rot13 { if [ -r $1 ]; then cat $1 | tr '[N-ZA-Mn-za-m5-90-4]' '[A-Za-z0-9]'; else echo $* | tr '[N-ZA-Mn-za-m5-90-4]' '[A-Za-z0-9]'; fi }
2011-03-18 09:59:41
User: twjolson
Functions: cat echo tr
Tags: Linux unix tr

Will rot 13 whatever parameter follows 'rot13', whether it is a string or a file. Additionally, it will rot 5 each digit in a number

Know a better way?

If you can do better, submit your command here.

What others think

No need for quotes or square brackets:

alias rot13="tr a-zA-Z n-za-mN-ZA-M"
Comment by mathias 245 weeks and 5 days ago

That's a great solution. The second one, the function only needs a small correction. As written, the digit part only rotates the digit 10 places. To rotate it 13 places, use the following range: [3-90-2]

Comment by xizdaqrian 11 weeks and 3 days ago

Your point of view

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