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

1 vote327 views1 answer
Elementary-tweaks
Shell/Bash
0 vote336 views1 answer
Debian install ab
Shell/Bash
1 vote307 views1 answer
Linux test port
Shell/Bash
0 vote349 views1 answer
"${PROJECT_DIR}/FirebaseCrashlytics/run"
Shell/Bash
0 vote357 views1 answer
Quasar pug
Shell/Bash
16 votes369 views5 answers
Install numpy
Shell/Bash
0 vote347 views1 answer
Bash check if string ends with slash
Shell/Bash
3 votes413 views3 answers
Debloat windows 10
Shell/Bash
0 vote320 views1 answer
Gpg encrypt decrypt
Shell/Bash
61 votes365 views6 answers
Revert last commit
Shell/Bash