Is parallel buggy or is it just me? For example if i have a list of ip addresses:

  $ cat ips.txt | sort | uniq -c | sort -rn

   3 127.0.0.1
   2 192.168.1.1
   1 192.168.1.2 

Now i want to reformat the output of uniq -c, i want the count to the last column:

  $ cat ips.txt | sort | uniq -c | sort -rn | parallel --colsep ' ' echo {2} {1}

But gives empty output.. what gives? It only works if I double pipe it thru parallel like this:

  $ cat ips.txt | sort | uniq -c | sort -rn | \
      parallel --trim lr echo | parallel --colsep ' ' echo {2} {1}

  127.0.0.1 3
  192.168.1.1 2
  192.168.1.2 1