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Recursive grep with only certain types of files

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# 1  
Old 01-17-2014
Recursive grep with only certain types of files
Can I please have some ideas on how to do a recursive grep with certain types of files? The file types I want to use are *.c and *.java.

I know this normally works with all files.

Code:
grep -riI 'scanner' /home/bob/ 2>/dev/null

Just not sure how to get it to work *.c and *.java files.
# 2  
Old 01-17-2014
Like this ???

Code:
$ grep --include="*.c" -RIHn "scanner"

# 3  
Old 01-20-2014
Quote:
Originally Posted by Akshay Hegde
Like this ???

Code:
$ grep --include="*.c" -RIHn "scanner"

Do you think there is an error? I tried that and didn't get any output. I let the program run for about an hour until I finally killed it.
# 4  
Old 01-20-2014
Quote:
Originally Posted by cokedude
Do you think there is an error? I tried that and didn't get any output. I let the program run for about an hour until I finally killed it.

Sorry its my fault missed dot (.) Smilie

Try :

Code:
$ grep --include="*.java" -RIHn "pattern" .

Example :

Code:
$ grep --include="*.java" -RIHn "public static void main" .
./9.java:3:    public static void main(String[] args) {
./test1.java:3:    public static void main(String[] args) {
./8.java:3:    public static void main(String[] args) {
./7.java:3:    public static void main(String[] args) {
./10.java:3:    public static void main(String[] args) {
./3.java:3:    public static void main(String[] args) {
./2.java:3:    public static void main(String[] args) {
./5.java:3:    public static void main(String[] args) {
./4.java:3:    public static void main(String[] args) {
./1.java:3:    public static void main(String[] args) {
./6.java:3:    public static void main(String[] args) {
./test.java:3:    public static void main(String[] args) {

# 5  
Old 01-20-2014
Quote:
Originally Posted by Akshay Hegde
Sorry its my fault missed dot (.) Smilie

Try :

Code:
$ grep --include="*.java" -RIHn "pattern" .

Example :

Code:
$ grep --include="*.java" -RIHn "public static void main" .
./9.java:3:    public static void main(String[] args) {
./test1.java:3:    public static void main(String[] args) {
./8.java:3:    public static void main(String[] args) {
./7.java:3:    public static void main(String[] args) {
./10.java:3:    public static void main(String[] args) {
./3.java:3:    public static void main(String[] args) {
./2.java:3:    public static void main(String[] args) {
./5.java:3:    public static void main(String[] args) {
./4.java:3:    public static void main(String[] args) {
./1.java:3:    public static void main(String[] args) {
./6.java:3:    public static void main(String[] args) {
./test.java:3:    public static void main(String[] args) {

Works perfectly Smilie. Thank you. Any idea why you need to include the "."? Usually grep is smart enough to start in your current directory.
# 6  
Old 01-20-2014
Quote:
Originally Posted by cokedude
Works perfectly Smilie. Thank you. Any idea why you need to include the "."? Usually grep is smart enough to start in your current directory.
As far as I know include is just for pattern "." is to start in current directory as you said. similar to find . -type f | xargs .......
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