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Shell Programming and Scripting

Number of Vowels

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Top Forums Shell Programming and Scripting Number of Vowels
# 8  
Old 09-13-2006
ok here is one more
Code:
grep "[aeiouAEIOU]" filename.txt | tr -cd 'aeiouAEIOU' | wc -c

# 9  
Old 09-13-2006
I am not sure whether u want the total count or the count of 'A', 'E', 'I', 'O' and 'U' separately.
However the one-liner that I have given will give separate counts.

First, the command
Code:
tr '[a-z]' '[A-Z]' < 1.txt

will convert the contents of 1.txt to capital letters. Then, the command
Code:
tr -sc 'AEIOU' '[\012*]'

will tokenize the contents of the file to give only vowels.

On this output you are sorting so that you could use the uniq command on it.
uniq -c will precede each output line with the count of the number of times the line occurred in the input.
# 10  
Old 09-13-2006
Some alternatives...
Code:
$ fold -1 input.txt|egrep -i '[aeiou]'|sort |uniq -c
     14 a
     11 e
      6 i
      8 o
      3 u
$ tr -dc AEIOUaeiou < input.txt | fold -1 | sort |uniq -c
     14 a
     11 e
      6 i
      8 o
      3 u
$ fold -1 input.txt|egrep -ic '[aeiou]'
42
$ tr -dc AEIOUaeiou < input.txt | wc -c
     42

# 11  
Old 09-13-2006
MySQL Thanks a ton
Hi All,

Thanks for such quick and amazing responses.
Thanks a lot.
Maybe I need to explore the power of tr command.

Thanks and Regards,
Gaurav Goel
# 12  
Old 09-12-2008
PHP :-(
Quote:
Originally Posted by charu
This is one way of achieving the count of vowels in the file 1.txt

Code:
tr '[a-z]' '[A-Z]' < 1.txt | tr -sc 'AEIOU' '[\012*]' | sort | uniq -c



well.. this wont work in every case..
let's suppose 1.txt is like this:
Code:
$ cat 1.txt
aaaa

The output is :
Code:
$ tr '[a-z]' '[A-Z]' < 1.txt | tr -sc 'AEIOU' '[\012*]' | sort | uinq -c
   1 AAAA

which is wrong.. as there are four vowels Smilie

as there is nothing else to replace the new line character with...
the repetitive characters are counted as 1
# 13  
Old 09-12-2008
Code:
awk '{
 for(i=1;i<=NF;i++)
 if($i=="vowels")
 n++
 }
END{
print n
}' file

# 14  
Old 09-28-2008
Quote:
Originally Posted by Ygor
Some alternatives...
Code:
$ fold -1 input.txt|egrep -i '[aeiou]'|sort |uniq -c
     14 a
     11 e
      6 i
      8 o
      3 u
$ tr -dc AEIOUaeiou < input.txt | fold -1 | sort |uniq -c
     14 a
     11 e
      6 i
      8 o
      3 u
$ fold -1 input.txt|egrep -ic '[aeiou]'
42
$ tr -dc AEIOUaeiou < input.txt | wc -c
     42

fold is another useful command... Thanks Smilie
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