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This article lists some of the more useful ways of utilizing the find command. These commands will work on most Linux distributions, and have been tested on recent versions of Fedora. To find a file by its name, starting in the current directory and recursing through its children, use: find . -name '<string>' Search Inside Files To search inside files, descending into subdirectories and listing ONLY the file names: find . -print0 | xargs -0 grep '<search_phrase>' -sl The above command will print out the names of the files that contain the <search_phrase>, which could be a regex. Note that the above command works even with “funny” filenames that contain spaces or newlines. The “print0” and -0 option to xargs do the trick – you can see the xargs man page for an explanation of why this works! Also, xargs is a
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Modes Vi has two modes: insertion mode, and command mode. The editor begins in command mode, where cursor movement and text deletion and pasting occur. Insertion mode begins upon entering an insertion or change command. [ESC] returns the editor to command mode (where you can quit, for example by typing :q!). Most commands execute as soon as you type them except for “colon” commands which execute when you press the return key.   Quitting exit, saving changes :x quit (unless changes) :q quit (force, even if unsaved) :q! Inserting text insert before cursor, before line i , I append after cursor, after line a , A open new line after, line before o , O replace one char, many chars r , R (more…)
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Here are 5 linux commands that appear to be pretty useless.  They might have been useful at sometime back in the day, but with the way linux has evolved today, they don’t appear to be of much use any longer. clear The clear command simply clears the terminal screen. I don’t find it useful since hitting CTRL-L is the quickest way of clearing the terminal screen. rev The rev command as described on its man page is a utility that copies the specified files to the standard output, reversing the order of characters in every line. If no files are specified, the standard input is read.As an example, I typed the sentence “Linux is fun” Here is what the rev command will give me as a result: $ rev Linux is fun nuf si xuniL (more…)
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