Find command unix man page
This file documents the GNU utilities for finding files that match certain criteria and performing various operations on them. This file documents the GNU utilities for finding files that match certain criteria and performing various actions on them. This manual shows how to find files that meet criteria you specify, and how to perform various actions on the files that you find. The principal programs that you use to perform these tasks are find , locate , and xargs. Some of the examples in this manual use capabilities specific to the GNU versions of those programs. Many other people have contributed bug fixes, small improvements, and helpful suggestions.
- find(1) - Linux man page
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find(1) - Linux man page
Jump to navigation. It's easy to get into the habit of googling anything you want to know about a command or operation in Linux, but I'd argue there's something even better: a living and breathing, complete reference, the man pages , which is short for manual pages. The history of man pages predates Linux, all the way back to the early days of Unix. Man pages also have a reputation of being terse and, in a way, have a language of their own. Just like Unix and Linux, the man pages have not been static, and they continue to be developed and maintained just like the kernel.
Even so, users generally don't need to know the section where a particular command lies to find what they need. The files are formatted in a way that may look odd to many users today. Originally, they were written in in an old form of markup called troff because they were designed to be printed through a PostScript printer, so they included formatting for headers and other layout aspects.
In Linux, groff is used instead. If you look up the man page for the command man , you'll see the file man. To access a man page, type a command such as:. This uncompresses the man page, interprets the formatting commands, and displays the results with less , so navigation is the same as when you use less.
To explain how to interpret a typical man page, let's use the man page for ls as an example. Under Name , we see.
Any element that occurs inside brackets is optional. The above command means you can legitimately type ls and nothing else. The ellipsis after each element indicates that you can include as many options as you want as long as they're compatible with each other and as many files as you want. For example:. Under Description , we see a more verbose description of what the command does, followed by a list of the available options for the command.
If we want to use this option, we can either type the short form syntax, -a , or the long form --all. Not all options have two forms e. When you want to use multiple options, you can either type the short forms with spaces in between or type them with a single hyphen and no spaces as long as they do not require further sub-options.
The command tar is somewhat unique, presumably due to its long history, in that it doesn't require a hyphen at all for the short form. After all, there is much more to man pages than just commands.
Our latest Linux articles. While the documentation for these is even more terse and compact, overall it contains similar information. Ah, no, PostScript printers also did not exist when troff was invented. They are one of the biggest turn-offs to using Linux. Linux needs constructive help pages.
Sounds like Google is your friend. For many commands, a more extensively written documentation would be very large. It's got a bunch of command examples, and you can add more easily, and even contribute examples back.
Combined with man pages, it's a pretty complete reference set. A well-written man page is a thing of beauty. An user doesn't need Googled examples if the man has clear, concise writing. Examples may be included in the man page if it's especially troublesome, otherwise -- but if you have to look up a Googled script-kiddie example, you're not really understanding the way the command works. I'm surprised nobody has mentioned man2html yet It took a little setting up initially, but as previously mentioned here: MAN pages are a great example of how NOT to write manuals.
I find man2html very useful I often have a web browser window open anyway, as well as a custom "home" page with various search boxes.
It has become difficult to find and install these days, but my favourite viewer for man pages was xman. Yes the athena widgets are a bit clunky and it is datet but still it offered an easy alternative to just plain shell. How to use a man page: Faster than a Google search How to use a man page: Faster than a Google search.
Linux manual pages are easier to use than you think and hold a wealth of information. Image by :. Internet Archive Book Images.
Modified by Opensource. Get the highlights in your inbox every week. Man pages are divided into sections referenced by numbers: General user commands System calls Library functions Special files and drivers File formats Games and screensavers Miscellanea System administration commands and daemons Even so, users generally don't need to know the section where a particular command lies to find what they need.
To access a man page, type a command such as: man man for example, to show the man page for man. Breaking down a man page To explain how to interpret a typical man page, let's use the man page for ls as an example. Under Name , we see ls - list directory contents which tells us what ls means in the simplest terms. More Linux resources. Topics Linux. About the author.
Greg Pittman - Greg is a retired neurologist in Louisville, Kentucky, with a long-standing interest in computers and programming, beginning with Fortran IV in the s. When Linux and open source software came along, it kindled a commitment to learning more, and eventually contributing. He is a member of the Scribus Team. More about me. Recommended reading Serial communication on modern Linux.
Scan your Linux security with Lynis. Start using systemd as a troubleshooting tool. Getting started with FreeBSD as a desktop operating system.
Using the systemctl command to manage systemd units. Anon on 12 Jul Permalink. Googling comes with example, most man pages don't. John5g6 on 13 Jul Permalink. Greg Pittman on 14 Jul Permalink. Seth Kenlon on 13 Jul Permalink. I use man pages. Some are better than others. Fionn on 13 Jul Permalink. Michael on 16 Jul Permalink. Rolf on 18 Jul Permalink. Try to use a search engine that respects your privacy. Ahmad Haghighi on 11 Aug Permalink.
Erwin on 20 Jul Permalink. Most often you don't need a Search Engine! Just RTFM :. Subscribe to our weekly newsletter Get the highlights in your inbox every week.
Linux man Command Tutorial for Beginners (8 Examples)
While they're not all well-advertised, there are actually a variety of means of getting help under Unix. Man pages correspond to online manuals for programs, file formats, functions, system calls, and so forth. If you've never read one before, the best way to start is by typing 'man man ' at the command line. Of course, while man pages are a vast improvement over the online documentation of most other OSes, they suffer from many failings: some people don't like to read text on the screen not very helpful unless you already know what to look for not always accessible even when present not always present, especially under Linux frequently hard to read, as they try to be authoritative and are therefore often too technical for new users frequently out of date That said, they're still better and more comprehensive than the alternatives.
A very useful aspect of the Linux command line is that the documentation for almost all command line tools is easily accessible. These documents are known as man pages, and you can easily access them through the command line using the man command. In this tutorial, we will discuss the basics of man using some easy to understand examples. But before we do that, it's worth mentioning that all examples in this article have been tested on Ubuntu The man command gives users access to manual pages for command line utilities and tools.
man command in Linux with Examples
Search a folder hierarchy for filename s that meet a desired criteria: Name, Size, File Type - see examples. GNU find searches the directory tree rooted at each given file name by evaluating the given expression from left to right, according to the rules of precedence see Operators , until the outcome is known the left hand side is false for AND operations, true for OR , at which point find moves on to the next file name. The -H, -L and -P options control the treatment of symbolic links. That argument and any following arguments are taken to be the expression describing what is to be searched for. If no paths are given, the current directory is used. If no expression is given, the expression '-print' is used but you should probably consider using '-print0' instead, anyway. This manual page talks about 'options' within the expression list. These options control the behaviour of find but are specified immediately after the last path name. The three 'real' options -H, -L and -P must appear before the first path name, if at all. Never follow symbolic links.
Man pages are generally written by the developer of the corresponding program. Generally the man pages are divided into number of sections. The following is the list of all available man sections. Every section has a unique number and contains only a specific type of man pages. For example man section number 3 contains only man pages of library calls.
In Unix-like and some other operating systems , find is a command-line utility that locates files based on some user -specified criteria and then applies some requested action on each matched object. It initiates a search from a desired starting location and then recursively traversing the nodes directories of a hierarchical structure typically a tree. The possible search criteria include a pattern to match against the filename or a time range to match against the modification time or access time of the file.
Master the command line: How to use man pages
To use the find command, at the Unix prompt, enter:. Leave the double quotes in. The find command will begin looking in the starting directory you specify and proceed to search through all accessible subdirectories.
On Unix-like operating systems, the find command searches for files and directories in a file system. Within each directory tree specified by the given path s, it evaluates the given expression from left to right, according to the rules of precedence see " Operators ", below until the outcome is known. At that point find moves on to the next path until all path s have been searched. It can be used on its own to locate files, or in conjunction with other programs to perform operations on those files. The -H , -L and -P options control the treatment of symbolic links. Arguments following these are taken to be names of files or directories to be examined, up to the first argument that begins with " - ", or the argument " " or "!
Linux and Unix find command tutorial with examples
8 UNIX / Linux Man Command Example to View Man Pages
Section-num : Since a manual is divided into multiple sections so this option is used to display only a specific section of a manual. So this option gives the section in which the given command is present. In this example you can move through the manual pages sections i.
Linux and Unix find command tutorial with examples
Is it some kind of arcane knowledge, handed down only to initiates after grueling initiations? Well, no. Actually, anyone can learn about Terminal commands, if they know where to look. The key to Terminal wisdom is the man command.
How to use a man page: Faster than a Google search