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# 8  
Old 10-06-2013
The double square brackets are important - the character class [:alpha:] replaces a-zA-Z, you still need the outer brackets to denote a bracket expression.
Code:
$ grep -Ewo "[[:alpha:]]" all.txt | sort | uniq -c | sort -k1,1rd | head -30
     98 ا
     62 ل
     61 و
     53 م
     43 ر
     35 ن
     32 ي
     31 ه
     29 ت
     24 د
     21 أ
     21 ف
     20 ك
     19 ع
     18 ب
     16 س
     12 ق
     11 ة
     10 ح
      7 ذ
      7 ط
      6 ء
      6 خ
      6 ض
      6 ى
      5 ش
      4 إ
      4 ج
      3 ث
      3 ص

This User Gave Thanks to CarloM For This Post:
khaled79
# 9  
Old 10-06-2013
Thanks a lot
it works for character

but how to find top 30 words and trigraphs (3 letter in same order)?

---------- Post updated at 08:06 PM ---------- Previous update was at 07:41 PM ----------

I tried this one for trigraphs and it works

Code:
 
grep -Ewo "[[:alpha:]]"{3} education.txt | sort | uniq -c | sort -k1,1rd | head -5>result




but still need how to get top 30 words ?


Last edited by khaled79; 10-06-2013 at 09:58 PM..
# 10  
Old 10-06-2013
Did you try ChublerXL's other solutions (amended to use the character class)?
# 11  
Old 10-06-2013
Thanks

the problem of top words has been solved by

Code:
 
grep -Ewo "[[:alpha:]]""{2,}" education.txt | sort | uniq -c | sort -k1,1rd | head -5>result


output

Code:
 
37 علم
     30 إلى
     28 على
     18 التي
     18 الكيمياء
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