Diff on two variables

diff <(echo "$a") <(echo "$b")
You got some results in two variables within your shell script and would like to find the differences? Changes in process lists, reworked file contents, ... . No need to write to temporary files. You can use all the diff parameters you'll need. Maybe anything like $ grep "^>" is helpful afterwards.

26
By: olorin
2009-07-15 07:26:23

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    diff -Naur --strip-trailing-cr
    ruslan · 2011-02-10 14:32:42 0
  • get subversion diff output without distracting whitespace changes. good for when you are cleaning up code to make sure you didn't change anything important. also useful when working with old code, or someone else's code.


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    katylava · 2009-02-10 20:39:54 1
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    lsof -c diff -o -r1 | grep $file
    d0g · 2014-01-29 18:35:28 1
  • Diff 2 branches, for a type of file & having a string in the diff


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    git diff t1_clone tlocal4 --name-only | grep -i "swift" | xargs git diff t1_clone tlocal4 --word-diff-regex="NSLocalized"
    ashish2 · 2017-02-08 11:50:45 0

What Others Think

cool
arcarbut · 465 weeks and 6 days ago
curious what the bourne (as opposed to bash) equivalent to this would be.
Korla_Plankton · 356 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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