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

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