what is the difference between cat and less command in linux?
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The two are different. less is a non-standard pager ( more is the standard one), used for viewing text, while cat is a standard utility, used for concatenating any type and number of data streams into one. They might appear to do the same thing under some circumstances, but then again, so does other utilities.
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cat command allows us to create single or multiple files, view contain of file, concatenate files and redirect output in terminal or files. Whereas vi is one of the many ways to edit files in Unix. This editor enable you to edit lines in context with other lines in the file.
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As to what the actual difference is between those two options - well that could go on to be a very long answer but essentially LVM deals with extents and has multiple additional layers of abstraction that clearly need to be considered during boot - whereas the standard Linux PT should be a lot more starightforward than ...
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The DROP command is used to remove table definition and its contents. Whereas the TRUNCATE command is used to delete all the rows from the table.
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The main difference between them is: scanf() reads input until it encounters whitespace, newline or End Of File(EOF) whereas gets() reads input until it encounters newline or End Of File(EOF), gets() does not stop reading input when it encounters whitespace instead it takes whitespace as a string.
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Stop Process = SIGSTOP (pause signal, let's you continue later with SIGCONT, does not kill process) End Process = SIGTERM (termination signal, the right way, the application can intercept this signal and intiate shutdown tasks such as temp file cleanup)
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Generally, fewer is used when the number of things is counted (fewer problems) whereas less is used when the number is measured (less trouble or less time).
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You can use any characters except for null and / within a filename in modern Unix and Linux filesystems. You can use ASCII punctuation. Some utilities use stops (dot) and commas in the names of files they create.
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According to usage rules, fewer is only to be used when discussing countable things, while less is used for singular mass nouns. For example, you can have fewer ingredients, dollars, people, or puppies, but less salt, money, honesty, or love. If you can count it, go for fewer. If you can't, opt for less.
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echo always exits with a 0 status, and simply prints arguments followed by an end of line character on the standard output, while printf allows for definition of a formatting string and gives a non-zero exit status code upon failure. ... that is obviously slower than without printing the \n , but yet faster than echo .
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Both are entirely different things. Git Bash is just a combination of Bash (along with gnucoreutils, which includes ls, cat, etc.), which lets you use bash shell and other Unix commands on Windows. ... Bash is provided along with git because along with git, one requires some other tools like diff, ls, etc.
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zcat. Gzip is an implementation of the Lempel-Ziv coding algorithm, it compresses files. The Mac OS X implementation of gzip varies a little from their *nix counterparts and it's a little tricky to use so I made this little guide to help myself.
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In the exercise paper, the lecturer also mentions that "less than" is different from "is less than", in that "less than" is used to mean subtraction (where the numbers are inverted), whereas "is less than" is used to compare two numbers. ... 155 subtracted from 310 is 155. 355 added to 1233 is 1588.
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Git Bash. Bash in Git is an emulation of a Unix shell for Linux and Mac OS, so you can use it on Windows as well if you are used to Linux. Git Bash commands are run in Linux, while Windows have Git Shell command line.
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Gzip Command in Linux. gzip command compresses files. Each single file is compressed into a single file. The compressed file consists of a GNU zip header and deflated data.
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9 Answers. They're different characters. \r is carriage return, and \n is line feed. ... More importantly, Unix tends to use \n as a line separator; Windows tends to use \r\n as a line separator and Macs (up to OS 9) used to use \r as the line separator.
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zcat will uncompress first then pipe wc -l will counts the lines. cat will just pass the data read from the file then pipe to wc -l will counts the lines. Thats why you see different results, try cat on the compressed file, you will see gibberish. Now try zcat on the compressed file, You will see your data.