Merges files by the first column

[Duy Dinh]

Input Files:

File1.txt

A 1
B 1
C 1

File2.txt

A 2 2
B 2 2
C 2 2

File3.txt

A 3 3 3
B 3 3 3
C 3 3 3

File4.txt

A 4 4 4 4
B 4 4 4 4
C 4 4 4 4

---

Output:

Number of input files: 4
A 4 4 4 4 1 3 3 3 2 2
B 4 4 4 4 1 3 3 3 2 2
C 4 4 4 4 1 3 3 3 2 2

$bash /home/duy/workspace/tests.sh -d /home/duy/workspace/tests -e "txt"

$sh mergeFiles.sh ./
(merge all files under current directory)

or by specifying file extension

$sh mergeFiles.sh ./ trec_eval
(merge all trec_eval files under current directory)

or by using specific options

$sh mergeFiles.sh -d inputDir -e txt -b 2
(... but skip second column from original files)

$sh mergeFiles.sh -d inputDir -e txt -r
(... but skip first column (header) in the final result file)