Editing Linux 101 hacks (section)

=='''Hack 20. Join Command'''==


Join command combines lines from two files based on a common field.


In the example below, we have two files – employee.txt and salary.txt. Both have employee-id as common field. So, we can use join command to combine

the data from these two files using employee-id as shown below.


$ cat employee.txt


100 Jason Smith


200 John Doe


300 Sanjay Gupta


400 Ashok Sharma


$ cat bonus.txt


100 $5,000


200 $500


300 $3,000


400 $1,250


$ '''join employee.txt bonus.txt'''


100 Jason Smith $5,000


200 John Doe $500


300 Sanjay Gupta $3,000


400 Ashok Sharma $1,250