Finding a substring in files across subdirectories with a single built-in command?
In Windows, if I wanted to find a string across all files in all subdirectories, I would do something like
grep
List (or move) only files with a certain number of lines?
Dealing with a whole bunch of two-line config files, I’d like a way to exclude any files that have a different number of lines.
limit find output AND avoid signal 13
I have a directory with ~1M files and need to search for particular patterns. I know how to do it for all the files:
Number of files containing a given string
How can I count the number of files (in a directory) containing a given string as input in bash/sh?
How to use grep on column?
I want to apply grep on particular column in column command.
Insert new lines with missing values (NA)
I would like to insert new lines in text files if there are missing values.
I have for example the following text file (A.txt), for which line 5 is missing. In addition, as the file should have 12 lines the lines 11-12 are also missing.
grep on a variable
Let’s say I have a variable
Grep slow to exit after finding match?
I’m trying to write a bash script that polls btmon for device connections. I’ve got a working solution, but it’s absurdly slow, and it seems like the issue is grep being very slow to exit after finding a match (around 25 seconds). What can I do to either speed grep up or avoid using it altogether?
How to run grep on a single column?
I want to grep the output of my ls -l command:
How to grep lines which does not begin with “#” or “;”?
I want to grep smb.conf and see only lines which are not commented.