I have a tab delimited file with four columns. I would like to grep for the lines that have a specific pattern in column 1, where it says apple M of N.
I only want to extract the lines that have the ...
Is it possible to have just one regex which can extract the pattern "Mango-1.whatever.." in any of these 3 conditions (i.e. $dummy). I keep printing everything after this pattern. If I use comma in ...
I'm trying to grab only matching lines from a file using grep. The problem is that, when for example I use the following expression:
grep -w AFFX-KIT-000088 textfile
it will return:
There are two ways to read all files under the current working directory:
grep -rw pip | wc -l
grep -r "\bpip\b" | wc -l
Assuming 1 and 2 both search the working directory for the whole word "pip", ...
Say I have a large CSV file with a header and several columns. For the purpose of this question I will consider a small file with just two columns. We can call it use_rep.
I've exported my email archive of 10 years which is very large.
I want to parse all the text for any string that is 64 characters long in search of a bitcoin private key.
How can I parse strings of ...
I have a file that contains multiple instances of code that I need to delete. Here is an example:
I have a sequence file:
$ cat file
I want to calculate the longest stretch of C+T. I ...
I have a file in which I want to print all the lines between two patterns. Pattern1 = # Begin TRACE A Data and Pattern 2 =# Done Data $capture, I want to print every line between pattern1 and pattern2....
I'm trying to print only a matching word that are found through a regular expression. Below, I want all the OPENSSL_NO_* options that are present in the source code:
$ grep -IR OPENSSL_NO