join

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

$ cat employee.txt

100

200

300

400

Jason Smith

John Doe

Sanjay Gupta

Ashok Sharma

$ cat bonus.txt

100

200

300

400

$5,000

$500

$3,000

$1,250

$ join employee.txt bonus.txt

100

200

300

400

Jason Smith $5,000

John Doe $500

Sanjay Gupta $3,000

Ashok Sharma $1,250

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