I have to change the output of uniq -c: (example)
92 root
80 user
in
root 92
user 80
how can I do without using awk force?
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1What is wrong with awk?– jesse_bMar 23, 2018 at 14:01
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Nothing I would like to know if there are other ways– F.G.Mar 23, 2018 at 14:03
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3 Answers
Here you go with GNU sed:
... | sed -E 's/(\S*) (\S*)/\2 \1/'
Or POSIXly,
... | sed 's/\([^ ]*\) \(.*\)/\2 \1/'
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@Stéphane Chazelas - fwiw, none of these works with actual
uniq -coutput - the quantifier in the 1st group has to be+(or\{1,\}) to deal with the leading whitespace Mar 23, 2018 at 15:22 -
@don_crissti, that would depend on the
uniqimplementation. The OP's seems to not output leading spaces. In any case, yes, using+would help making it work withuniqimplementations that output leading spaces. Mar 23, 2018 at 15:49
Here is a solution with cut and paste, given your input is a file and the delimiter is a space:
cut -d' ' -f1 input > temp1
cut -d' ' -f2 input > temp2
paste -d' ' temp2 temp1 > output
rm temp*
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If somebody knows how to have a tab as a delimiter in
cutother than copy/paste i'd be very very thankful.– 3nrique0Mar 23, 2018 at 14:22 -
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and btw, if that
uniq -coutput is exactly as posted by the OP (no leading spaces, columns separated by a single space) and if it's saved in a file you don't need temporary files etc you can simply run:paste -d' ' infile infile | cut -d' ' -f2,3Mar 23, 2018 at 19:09
