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find . -name "*.php" | xargs grep -i -n "searchstring" >output.txt
Here I am trying to write data into a file which is not happening...
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Method 1: Use redirection to save command output to file in Linux. You can use redirection in Linux for this purpose. With redirection operator, instead of showing the output on the screen, it goes to the provided file. The > redirects the command output to a file replacing any existing content on the file.
grep is very often used as a "filter" with other commands. It allows you to filter out useless information from the output of commands. To use grep as a filter, you must pipe the output of the command through grep . The symbol for pipe is " | ".
grep -n 'string' filename : Force grep to add prefix each line of output with the line number within its input file. grep --with-filename 'word' file OR grep -H 'bar' file1 file2 file3 : Print the file name for each match.
How about appending results using >>?
find . -name "*.php" | xargs grep -i -n "searchstring" >> output.txt
I haven't got a Linux box with me right now, so I'll try to improvize.
the xargs grep -i -n "searchstring" bothers me a bit.
Perhaps you meant xargs -I {} grep -i "searchstring" {}, or just xargs grep -i "searchstring"?
Since -n as grep's argument will give you only number lines, I doubt this is what you needed.
This way, your final code would be
find . -name "*.php" | xargs grep -i "searchstring" >> output.txt
find . -name "*.php" -exec grep -i -n "function" {} \; >output.txt
But you won't know what file it came from. You might want:
find . -name "*.php" -exec grep -i -Hn "function" {} \; >output.txt
instead.
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