Sed command delete pattern match keyword from file

# cat emaillist

shahzad@example.com

shahzad.in@example.com

shahzad.out@example.com

alam@example.com

alam.out@example.com

alam.in@example.com

Delete any matched keyword form file.  I am deleting here .in@example.com

Use following sed command:

# sed '/.in@example.com/d' emaillist

Output:

shahzad@example.com

shahzad.out@example.com

alam@example.com

alam.out@example.com

Redirect output in new file

# sed '/.in@example.com/d' emaillist >emailnew

# cat emailnew

shahzad@example.com

shahzad.out@example.com

alam@example.com

alam.out@example.com

Delete keyword using –I option under file

# sed -i '/.in@example.com/d' emaillist

# cat emaillist

shahzad@example.com

shahzad.out@example.com

alam@example.com

alam.out@example.com

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About Penguin Technology

I am a passionate cloud and DevOps professional specializing in Linux and open-source solutions. Through this blog, I share my knowledge and experience with the community, offering tips and insights on cloud technologies and DevOps practices.