What is the difference between grep -e and grep -E option?
I am trying to understand the difference between grep -e and grep -E. Now from grep manpage I got:-E, --extended-regexp. Interpret PATTERN as an extended regular expression (see …
How can I use grep to find a word inside a folder?
Nov 8, 2010 · Now let's consider both possibilities for grep -nr MobileAppSer* . 1. Assume we have 3 files in the current directory matching MobileAppSer* wildcard pattern: named …
Grep: how to add an "OR" condition? - Unix & Linux Stack Exchange
Dec 1, 2011 · Apart from that, the shell parses the command line before it can see what the command name is, e.g. it first finds where the ; or newline is that ends the command and only …
Find all files containing a specific text (string) on Linux?
Jun 6, 2013 · This grep command will give you a precise result when you are searching for specific text on Linux - grep -inRsH "Text to be searched" /path/to/dir (it can be '.') i stands for …
How do I recursively grep all directories and subdirectories?
Jan 1, 2010 · Get the first matched files from grep command and get all the files don't contain some word, but input files for second grep comes from result files of first grep command. grep …
Grep only the first match and stop - Stack Overflow
Oct 20, 2016 · Reading the grep manual (man grep) this is the minimum command to find first match with Extended regexp. Example getting the ethernet name that in my laptop is NOT …
How to perform grep operation on all files in a directory?
In Linux, I normally use this command to recursively grep for a particular text within a directory: grep -rni "string" * where. r = recursive i.e, search subdirectories within the current directory; n …
unix - Extract column using grep - Stack Overflow
Sep 18, 2016 · I have a data frame with >100 columns each labeled with a unique string. Column 1 represents the index variable. I would like to use a basic UNIX command to extract the index …
unix - How to use grep command on zip files - Stack Overflow
Sep 2, 2014 · A script calling grep assumes that every line in the output is a match, and if there are no matches, then nothing is printed. A line saying "oh, we found nothing, but that's maybe …
How can I exclude directories from grep -R? - Stack Overflow
Jul 3, 2011 · SOLUTION 2 (recursive use of grep, using the -R and --exclude-dir option of grep): You know this solution already (recursive search), but I add it since it's the most recent and …