To extract certain lines from the command history of Linux, you can make use of various commands:
- Using grep command:
history | grep "keyword"
Replace "keyword" with the specific word or phrase you want to search for in your command history. This command will display only the lines that match the keyword.
- Using grep with line numbers:
history | grep -n "keyword"
The -n option will display the line numbers along with the matching lines.
- Using awk command:
history | awk '/keyword/'
This command will display only the lines containing the keyword.
- Using sed command:
history | sed -n 'Xp'
Replace "X" with the line number you want to extract from the command history. This command will display only that specific line from the history.
These commands can be combined with other Linux utilities to further manipulate or process the extracted lines as needed.