20140829-2 选题补充前面一篇文章中相关文章的原文

2024-12-26 21:30:55 +08:00 · 2014-08-29 09:58:41 +08:00 · 2014-08-29 09:58:41 +08:00 · 636f08a816
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 In our past following articles, we’ve shown some useful articles on some funny commands of Linux, which shows that Linux is not as complex as it seems and can be fun if we know how to use it. Linux command line can perform any complex task very easily and with perfection and can be interesting and joyful.

 - [20 Funny Commands of Linux – Part I][1]注，此篇的原文应该翻译过，文件名应该是：20 Funny Commands of Linux or Linux is Fun in Terminal
- [Fun in Linux Terminal – Play with Word and Character Counts][2]
+- [Fun in Linux Terminal – Play with Word and Character Counts][2]注：这篇文章刚刚补充上

 ![Funny Linux Commands](http://www.tecmint.com/wp-content/uploads/2014/08/Funny-Linux-Commands.png)
 Funny Linux Commands
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+Fun in Linux Terminal – Play with Word and Character Counts
+================================================================================
+Linux command line has a lot of fun around itself and many tedious task can be performed very easily yet with perfection. Playing with words and characters, their frequency in a text file, etc is what we are going to see in this article.
+
+The only command that comes to our mind, for tweaking Linux command line to manipulate words and characters from a text file is [wc command][1].
+
+![Fun with Word and Letter Counts in Shell](http://www.tecmint.com/wp-content/uploads/2014/03/Linux-Word-Count.png)
+
+A ‘**wc**‘ command which stands for word count is capable of Printing Newline, word & byte counts from a text file.
+
+To work with the small scripts to analyze text file, we must have a text file. To maintain uniformity, we are creating a text file with the output of man command, as described below.
+
+    $ man man > man.txt
+
+The above command creates a text file ‘**man.txt**‘ with the content of ‘**manual page**‘ for ‘man‘ command.
+
+We want to check the most common words, in the above created ‘**Text File**‘ by running the below script.
+
+    $ cat man.txt | tr ' '  '\012' | tr '[:upper:]' '[:lower:]' | tr -d '[:punct:]' | grep -v '[^a-z]' | sort | uniq -c | sort -rn | head
+
+### Sample Output ###
+
+    7557 
+    262 the 
+    163 to 
+    112 is 
+    112 a 
+    78 of 
+    78 manual 
+    76 and 
+    64 if 
+    63 be
+
+The above one liner simple script shows, ten most frequently appearing words and their frequency of appearance, in the text file.
+
+How about breaking down a word into individual using following command.
+
+    $ echo 'tecmint team' | fold -w1
+
+### Sample Output ###
+
+    t 
+    e 
+    c 
+    m 
+    i 
+    n 
+    t 
+    t 
+    e 
+    a 
+    m
+
+**Note**: Here, ‘-w1′ is for width.
+
+Now we will be breaking down every single word in a text file, sort the result and get the desired output with the frequency of ten most frequent characters.
+
+    $ fold -w1 < man.txt | sort | uniq -c | sort -rn | head
+
+### Sample Output ###
+
+    8579  
+    2413 e
+    1987 a
+    1875 t
+    1644 i
+    1553 n
+    1522 o
+    1514 s
+    1224 r
+    1021 l
+
+How about getting most frequent characters in the text file with uppercase and lowercase differently along with their occurrence frequency.
+
+    $ fold -w1 < man.txt | sort | tr '[:lower:]' '[:upper:]' | uniq -c | sort -rn | head -20
+
+### Sample Output ###
+
+    11636  
+    2504 E 
+    2079 A 
+    2005 T 
+    1729 I 
+    1645 N 
+    1632 S 
+    1580 o
+    1269 R 
+    1055 L 
+    836 H 
+    791 P 
+    766 D 
+    753 C 
+    725 M 
+    690 U 
+    605 F 
+    504 G 
+    352 Y 
+    344 .
+
+Check the above output, where punctuation mark is included. Lets strip out punctuation, with ‘**tr**‘ command. Here we go:
+
+    $ fold -w1 < man.txt | tr '[:lower:]' '[:upper:]' | sort | tr -d '[:punct:]' | uniq -c | sort -rn | head -20
+
+### Sample Output ###
+
+      11636  
+      2504 E 
+      2079 A 
+      2005 T 
+      1729 I 
+      1645 N 
+      1632 S 
+      1580 O 
+      1550 
+      1269 R 
+      1055 L 
+       836 H 
+       791 P 
+       766 D 
+       753 C 
+       725 M 
+       690 U 
+       605 F 
+       504 G 
+       352 Y
+
+Now I have three text files, lets run the above one liner script to see the output.
+
+    $ cat *.txt | fold -w1 | tr '[:lower:]' '[:upper:]' | sort | tr -d '[:punct:]' | uniq -c | sort -rn | head -8
+
+### Sample Output ###
+
+      11636  
+       2504 E 
+       2079 A 
+       2005 T 
+       1729 I 
+       1645 N 
+       1632 S 
+       1580 O
+
+Next we will be generating those infrequent letters that are at least ten letters long. Here is the simple script.
+
+    $ cat man.txt | tr '' '\012' | tr '[:upper:]' '[:lower:]' | tr -d '[:punct:]' | tr -d '[0-9]' | sort | uniq -c | sort -n |  grep -E '..................' | head
+
+### Sample Output ###
+
+    1        ────────────────────────────────────────── 
+    1        a all 
+    1        abc             any or all arguments within   are optional 
+    1               able  see setlocale for precise details 
+    1        ab              options delimited by  cannot be used together 
+    1               achieved by using the less environment variable 
+    1              a child process returned a nonzero exit status 
+    1               act as if this option was supplied using the name as a filename 
+    1               activate local mode  format and display  local  manual  files 
+    1               acute accent
+
+**Note**: The more and more dots in the above script till all the results are generated. We can use .{10} to get ten character matches.
+
+These simple scripts, also make us know most frequent appearing words and characters in English.
+
+That’s all for now. I’ll be here again with another interesting and off the beat topic worth knowing, which you people will love to read. Don’t forget to provide us with your valuable feedback in comment section, below.
+
+--------------------------------------------------------------------------------
+
+via: http://www.tecmint.com/play-with-word-and-character-counts-in-linux/
+
+作者：[Avishek Kumar][a]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
+
+[a]:http://www.tecmint.com/author/avishek/
+[1]:http://www.tecmint.com/wc-command-examples/