SED COMMANDS

SED COMMANDS

Insert a blank line after each line /Insert two blank lines

• sed G filename.txt
• sed 'G;G' filename.txt

Delete the blank lines

• sed '/^$/d' filename.txt

Insert 5 spaces to the left of every lines

• sed 's/^/     /' filename.txt

To delete the particular line

• sed '10d' filename.txt

To delete the lines range from p to q

• sed '5,10d' filename.txt

To delete nth to end line

• sed '10,$d' filename.txt

To delete the matched pattern

• sed '/Nagaraju/d' filename.txt

To delete the lines which matches the pattern and 5 lines after to that pattern

• sed '/Nagaraju/,+5d' filename.txt 

To print the lines range from 10 to 50 of the file

• sed -n '10,50p' filename.txt

To print the lines except that range from 5 to 10

• sed -n '5,10d' filename.txt

To print the particular line and to print the lines from 5 to end of the line

• sed -n '10p' filename.txt
• sed -m '5,$p' filename.txt

To print the line which matches the pattern

• sed -n /Nagaraju/p filename.txt

To prints lines from the nth line of the input ,up to that line matches the pattern ,if the pattern lines doesn't found then it print up to the end of the file

• sed -n '1,/Nagaraju/p' filename.txt

To replace the pattern matches in the entire file with g without g current position of the line

• sed 's/Raju/Nagaraju/g' filename.txt

To replacing the nth occurrence of the pattern

• sed 's/Raju/Nagaraju/2' filename.txt

To replacing pattern on a specific line number 

• sed '10 s/Raju/Nagaraju/' filename.txt

To replacing the pattern on a defined range and ignoring the case

• sed '10,20 s/Raju/Nagaraju/i' filename.txt

Replace one pattern followed by the another pattern

• sed '/is/ s/Raju/Nagaraju/' filename.txt

Replace a pattern with other except in the nth line

• sed -i '5!s/Raju/Nagaraju/' filename.txt

How to displace the alternative line

• sed -n '1~2p' filename.txt

How to print pattern1 to pattern 2

• sed -n '/pattern1/,//pattern2/p' filename.txt 

Tar the file
tar -cvf filename.tar filename
Untar the file
tar -xvf filename.tar