Unix : Merge the contents of two files using common key present in the files
141526
Why isn't this awk command doing a full outer join?
25681
Piping contents of multiple files between programs while keeping contents separate
15101
How do I append text to the beginning and end of multiple text files in Bash?
117063
Find records present in file 1 also in both file 2 and file 3
145207
Remove all lines in file A which contain the strings in file B
11349
Compare 1st column of the 1st file and 2nd column of the 2nd file and matching
45385
Finding contents of one file in another file
94888
match first column of file a with paragraphs of file b
148125
How can I copy files from A to B, only including files that exist in B?
76717
Merging files by rows
96432
Merge some tab-delimited files
111706
Join lines from two files
64304
An efficient way to transpose a file in Bash
137786
How to remove the lines which appear on file B from another file A?
36913
How to remove lines included in one file from another file?
148665
Combine the output of two commands in bash
83932
What's the best way to join files again after splitting them?