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--- shell [2009/10/28 13:16] – created alan
+++ shell [2010/06/11 12:17] (current) – removed 172.26.14.218
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-===== Shell tips =====
-===== Searching for a String in Multiple Files =====
-Ever need to search through all your files for a certain word or phrase? You probably know about the grep command, but did you know it's recursive?
-Here's an example. In this case we're searching for the word "modules":
-<code>grep -r "modules" .</code>
-By using the "-r" switch, we're telling grep to scan files in the current directory and all sub-directories. It will return a list of files the string was found in, and a copy of the line it was found on.
-If you'd rather just get the file names and skip the rest of the output, use the "-l" switch, like so:
-<code>grep -lr "modules" .</code>
-Here's another tip: grep also supports regular expressions, so matching against a wildcard pattern is easy:
-<code>grep -lr "mod.*" .</code>
-That command will print a list of files containing any word starting with "mod".
-You can also use grep to search for multiple words:
-<code>grep -r "drupal\|joomla\|wordpress" .</code>
-And, of course, grep supports file name wildcards in the standard unix fashion. In this example, grep will search only file names starting with "log":
-<code>grep -lr "mod.*" ./log*</code>