4.11. Recursive grep (rgrep, grep -R)

4.11. Recursive grep ( rgrep , grep “R )

Unlike the members of the grep family, Linux's rgrep can recursively descend a directory tree. Rgrep has a number of command-line options and supports the same metacharacters as regular grep ( grep “R ). See Appendix A for a complete description of rgrep , or type rgrep “? for online help (not supported on regular versions of UNIX).

Example 4.52.

 %  grep -r 'Tom' ./dir  %  rgrep 'Tom' ./dir  

EXPLANATION

Searches recursively for all files containing Tom starting from under the ./dir directory.