Sed remove line containing

sed '/pattern to match/d' ./infile

Delete a line starting with sed

# Delete all lines starting with '#'
$ sed -i '/^#/d' filepath

Delete line in sed

# -i here update the file, try with and without -i, 
sed -i -e "/your_pattern/d" file 
sed -i -e "/your_pattern/,+2 d" file  # 2 lines after the pattern
sed -i -e '5,5d" file # remove 5th line

Sed delete line before match

Use d option at the end of sed command string for deleting line of matches.
tac | sed -i "" "s/matching_pattern/I+1 d" file.txt | tac #

Sed remove line

$ sed 's|http://||' <<EOL
http://url1.com
http://url2.com
http://url3.com
EOL

Source: catonmat.net

Similar codes

0 vote163 views1 answer
Docker see containers full command
Shell/Bash
11 votes174 views3 answers
ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?
Shell/Bash
0 vote177 views1 answer
Where is the .zshrc file on Mac?
Shell/Bash
4 votes182 views2 answers
Selinux disable
Shell/Bash
48 votes175 views6 answers
For loop in shell script
Shell/Bash
0 vote174 views1 answer
Daily bing ubuntu
Shell/Bash
0 vote167 views1 answer
Invert mouse left right scroll in ubuntu 18.04
Shell/Bash
0 vote173 views1 answer
Bash command to find the highest PID in your system
Shell/Bash
0 vote167 views1 answer
Delete merge branch git
Shell/Bash
3 votes181 views1 answer
How to check if in which folder are you present in linux
Shell/Bash