Linux grep key word search

ASCII文件：more "文件名"|grep "关键字"

Binary文件：more "文件名"|grep -a "关键字"

 

Check path and find file which contains the key words

grep -R <key words> <path>

Example: grep -R '192.168.0.1' /etc

 

Check path and find file which contains the key words, only display the file name

grep -R -l <key words> <path>

Example: grep -R -l '192.168.0.1' /etc

 

Display the before and after lines around the keywords

grep -A<number> -B<number> <keyword> <path>

grep -A2 -B3 'abc' /etc/passwd