You can also use options like -exclude, -include, -exclude-dir, and -include-dir for more efficient and fast searching. Will search for exact "-Xms" text in all files, it is could to find the scripts where you are specifying your JVM arguments. If you also want to search for the entire word, instead of just matching a part of the text, then you cause add option -w, which matches the whole word like This will help you to learn more in a short time. then I suggest you first go through a basic course like Linux Command Line Basics on Udemy. The -R option will recursively search files in sub-directories starting from the current directory, and -i will search for the text you're provide ignoring the case.ītw, if you are not familiar with basic Linux commands like grep, find, chmod, etc. I frequently use the recursive grep command to search all files in different sub-directories for finding a reference to a specific text like any host or URL which is going to decommission and needs to be migrated: You can combine the recursive option with the ignore case option (-i) to find a specific text like hostname by ignoring the case in your config files and scripts. The grep command allows you to scan files to find any matching text and you can use the recursive option of grep command to find all files containing a reference to your old database hostnames, or a specific text in general. Anyway, how do you find all those files containing hostname in your Linux machine? Well, the grep command is here to help you. Well, you should always use an alias to connect to the database or any other system, but sometimes it happens you have to use a hostname. Now, you want to file all config files and scripts which are referencing your old database using the hostname or IP address, so that you can replace them with an alias. I know, you may use other ways, maybe find, but I like this method, and use it a lot, just like the advanced search function in Gmail :).Hello guys, one of the most common tasks while working on programming projects is finding files containing some specific text like you have your application deployed in the Linux server, and you are migrating your database from one server to another. home/user/post/how-to-change-the-priority-of-Linux-processes.txt
home/user/post/four-years-with-debian-testing.txt home/user/post/interview-raphael-hertzog.txt home/user/post/how-to-setup-dns-bind-master-slave-linux.txt home/user/post/how-to-debug-bash-shell-scripts.txt The output will be: /home/user/post/monthy-newsletter.txt grep -riIl "introduction" /home/user/post/ The output now is: /home/user/post/monthy-newsletter.txt:#Introduction#įinally, I just want the file names, and not the sentences where the sentence or word appears. home/user/post/how-to-change-the-priority-of-Linux-processes.txt:#Introduction#Īs you can see there are some binary files, also scanned, if we want to avoid that: grep -riI "introduction" /home/user/post/
home/user/post/four-years-with-debian-testing.txt:#Introduction#īinary file /home/user/post/. matches home/user/post/interview-raphael-hertzog.txt:I also have plans for bigger changes concerning Debian, and among them is the introduction of Debian Rolling, a distribution similar to testing but with some design choices to make it more usable at any point in time. home/user/post/how-to-debug-bash-shell-scripts.txt:#Introduction# home/user/post/monthy-newsletter.txt:I'm no expert in MySQL, but anyway I have written three introduction-type MySQL posts, something we all need to know to start, and The output is: /home/user/post/monthy-newsletter.txt:#Introduction#
Grep command linux recursive Pc#
Let's see an example of the output in my PC grep -ri "Introduction" /home/user/post/ grep -r "sentence to look for" /home/user/docs/ Well, let's suppose you have a lot of sub-folders, and you do not remember where your file is. grep -i "sentence to look for" /home/user/docs/ Now, let's suppose you do not know if the sentence was in uppercase or in lowercase, so ask grep to ignore case. grep "sentence to look for" /home/user/docs/ Look for a document, containing a given stringįirst the easy case, you know the exact sentence, you are looking for, and you at least remember the folder where the file is. If you are using Linux, you have grep to help on this job. Now, thanks to computers this is easier now, than it was in our parents' days.
Grep command linux recursive how to#
How to find it?, well do a search of all your documents, looking for that word or words or sentence, in other words, look for a string or strings. Sometimes you remember a phrase or a given word or words, you put in a document, but you do not remember the name of the document. Look for a string, word, or sentence in a file with Linux grep command, recursively
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