Find Anything On your Linux Server
In Linux you there are different commands to find or locate files, directories , word, sentences.etc..., in this tutorial i am going to show you some commands that are really helpful for finding different types of files and commands
(The Level is beginner)
grep
grep command is another one to help you find a word or sentence in a file that matches a regular expression, grep is a very powerful tool to do a search through all the files and output what you are looking for. imagine you get are looking for a specific word in your binary files, the only thing you need to do is executing this command:
grep "the Specific word or sentence" /* -R # it is going to search through root directory and all the sub directories of root
find
by 'find' command you are able to search through directories and find files and directories based on their name, size, type, etc...
find command is one of the useful commands that can become handy when you are writing the script to administer your rver, for example, you can write a script to monitor your directories and find the files that start by a name and their size is bigger than 1GB
Some Examples:
find / -name my file # searching for a file named myfile in / directory
find / -size +1G # Searching for files, greater than 1GB
find / -size -1G # Searching for files, smaller than 1GB
find / -type d -name mydirectory # searching for directories named mydirectory.
you can search for blocks, characters, symbolic files ,etc..
there is lots of option with find command that you can use and make your script more powerful, "man find" is the manual for the find command
locate
locate command is a very fast search engine that benefits from a database, and the database get updated regularry , it means if you create a new file, you wont find the file for a period of time, or run the updatedb command manually
locate testfile
as you see after the updatedb command the specific file is found
whatis
shows description about the commands
whatis test # shows the description about test command
whereis
whereis command will locate the programs, by this command you will be able to see where your binaries.
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STOPTip: if your
grepoutputs colour, the command is aliased to something likegrep --color=auto. You can check with thealiascommand.There's nothing wrong with that, until you start using pipe (
|) to usegrep's output in other commands. The--colorswitch adds ANSI characters for colour and this can have unexpected results.To be safe, unset the alias (check
~/.bashrc,~/.profileor one of the other files that's sourced on login) or run\grep. The\in front of it will run the actual command, not the aliased command.nice tip ,thank you @slash-es
Great a post..., Are u usually Used Linux?