Contents
- 1 How do you delete a line containing a pattern in Unix?
- 2 How do I delete a range of lines in Linux?
- 3 What is the command to delete the current and previous line at the same time?
- 4 How do you delete awk lines?
- 5 How to delete the last line in a SED?
- 6 How to delete a pattern in a Unix file?
- 7 How to delete lines matching patterns in Linux?
How do you delete a line containing a pattern in Unix?
Delete last line only if it contains the pattern Here $ indicates the last line. If you want to delete Nth line only if it contains a pattern, then in place of $ place the line number. Note: In all the above examples, the sed command prints the contents of the file on the unix or linux terminal by removing the lines.
How do I delete a range of lines in Linux?
The “d” next to the range of lines instructs “sed” to delete the given range of lines. If you need more then one of range deleting, separate them with a semicolon like this “1714,1793d;24457,24679d”. If you have the need of the opposite (to include only the lines specified) the command would look like this.
How do I delete a Unix pattern?
N command reads the next line in the pattern space. d deletes the entire pattern space which contains the current and the next line. Using the substitution command s, we delete from the newline character till the end, which effective deletes the next line after the line containing the pattern Unix.
What is the command to delete the current and previous line at the same time?
In normal mode, press d for delete. Then, press k for upward motion. This is a shorthand for d1k . You can increase the count to delete more than the current and previous line.
How do you delete awk lines?
1: This is a test file. 2: Use the awk command NR variable to delete a specific line 3: Use the sed command action option d to delete a specific line 4: Awk command supports condition judgment 5: awk command supports loop function 6: The sed command has rich action options: a, d, g …
How do I delete a whole line in terminal?
# Deleting whole words ALT+Del Delete the word before (to the left of) the cursor ALT+d / ESC+d Delete the word after (to the right of) the cursor CTRL+w Cut the word before the cursor to the clipboard # Deleting parts of the line CTRL+k Cut the line after the cursor to the clipboard CTRL+u Cut/delete the line before …
How to delete the last line in a SED?
Delete the last line ONLY if it contains the pattern ‘AIX’: $ is for the last line. To delete a particular line only if it contains the pattern AIX, put the line number in place of the $. This is how we can implement the ‘if’ condition in sed. 19. Delete the last line ONLY if it contains either the pattern ‘AIX’ or ‘HPUX’: 20.
How to delete a pattern in a Unix file?
Delete only the next line containing the pattern ‘Unix’, not the very line: Using the substitution command s, we delete from the newline character till the end, which effective deletes the next line after the line containing the pattern Unix. 23. Delete the line containing the pattern ‘Linux’, also the line before the pattern:
When to delete a line in a file?
To delete a particular line only if it contains the pattern AIX, put the line number in place of the $. This is how we can implement the ‘if’ condition in sed. 19. Delete the last line ONLY if it contains either the pattern ‘AIX’ or ‘HPUX’:
How to delete lines matching patterns in Linux?
The convention is to use a forward slash, but when it becomes awkward, switch it to something else. Note, if you want to change the file itself, rather than output the result, you need the “in place” flag -i: Is this answer outdated?