I have a file where some of the lines are duplicates.
How do I use bash to print all the lines that have duplicates?
awk 'arr[$0]++; END {for(i in arr ){ if(arr>1){print i} } }' inputfile
awk '$0==s{print s RS $0}{s=$0}' file
I have a file where some of the lines are duplicates.
How do I use bash to print all the lines that have duplicates?
awk 'arr[$0]++; END {for(i in arr ){ if(arr>1){print i} } }' inputfile
awk '$0==s{print s RS $0}{s=$0}' file