linux-Configuration String-grep

Grep-rn "hello,world!" *

*: represents all files in the current directory, or it can be a file name

-R is recursive lookup

-N is the line number displayed

-R Find all files containing subdirectories

-I ignores case

Here are some interesting command-line arguments:

Grep-i pattern Files: Search by case-insensitive. The default case is case-sensitive,

grep-l pattern Files: Lists only the matching file names,

Grep-l pattern Files: Lists mismatched file names,

Grep-w pattern files: matches only the entire word, not part of the string (such as matching ' magic ', not ' magical '),

grep-c number pattern files: matching contexts display [number] lines, respectively,

grep pattern1 | PATTERN2 files: Displays rows that match pattern1 or pattern2.

grep pattern1 Files | grep pattern2: Displays rows that match both PATTERN1 and pattern2.

linux-Configuration String-grep