2
votes
2answers
136 views

Join two files with different number of columns and rows

I have two files. file_1.txt looks like this: R1 C1 C2 C3 C4 C5 R2 C1 C2 C3 C4 C5 R3 C1 C2 C3 C4 C5 R4 C1 C2 C3 C4 C5 ...
2
votes
1answer
915 views

intersection of two files according to the first column

I have two files in file A, there are sequence_numbers in the other file B, there are many columns, and the first column is sequnce numbers, I want to get a files with all the lines in the B with the ...