Combine columns from two text files
94756
Join two files, adding values in certain columns
5872
Combining the entries of two lists
43180
Extract data from a file and place in different files based on one column value
31517
Using awk to sum the values of a column, based on the values of another column
59721
Horizontal file concatenation
58443
Merge alternate lines from two files
111706
Join lines from two files
13743
Fill a column of a numpy array with another array
60311
Compare two files: lines present in one, not in the other, by one column comparison
47605
Merging very large csv files with common column
68439
How do I "merge" two text files?
137162
Appending two CSV files column-wise
74591
Merging multiple text files in R with a constraint
11349
Compare 1st column of the 1st file and 2nd column of the 2nd file and matching
95667
Combine rows / concatenate rows
99598
Changing column of multiple csv files
6090
Transposing rows and columns