Grep only the first match and stop

-m 1 means return the first match in any given file. But it will still continue to search in other files. Also, if there are two or more matched in the same line, all of them will be displayed. You can use head -1 to solve this problem: explanation of each grep option:

Using grep and ls -a commands

Using an ls –a and grep, how would you list the name of all of the files in /usr starting with the letter p or the letter r or the letter s using a single grep command? would this be right?

Is there a Pattern Matching Utility like GREP in Windows?

I also found one more way of utilizing GREP like functionality in Windows 7 and above without any extra application to install and on older systems you can use install Powershell. In Powershell, User can use Where-Object it has quite comprehensive set of feature that provides all the functionality of GREP plus more. Hope It helps.

How to grep and replace

I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string. I know that the command to find it might look like this: But how can I replace every instance of string_to_find with another string?

How to get the process ID to kill a nohup process?

When using nohup and you put the task in the background, the background operator (&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process if needed, via kill PID or kill -9 PID (if you need to force kill). …

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