Grep for lines with all words greater than 10 characters in length

greptext processing

I need a grep command that finds all lines that only contain words with lengths greater than 10.

this is the grep I wrote to find words bigger than 10 characters.

grep -E '(\w{11,})' input

How would I manipulate this command to include every word on the line?

Best Answer

Your condition might be more easily expressed in the contrapositive: instead of including lines where all words have length > 10, exclude those lines which have a word with length <= 10. Since grep supports both negation and word-matching, this could be written as, say:

grep -vwE '\w{1,10}'

-v negates the match
-w means that the regex should match a whole word

As Sundeep noted, we should use {1,10} to avoid matching the empty string (and thus every line).

Related Solutions

Grep for Line Length Not in Range – How to Use Regular Expressions

grep -xv '.\{8,63\}' <input >output

grep's -x switch denotes a whole line match - which is to say that any pattern matched must define a line from head to tail. doing...

grep -x pattern

...is generally equivalent to...

grep ^pattern$

grep's -v switch negates a pattern's influence on line-selection. generally doing...

grep pattern

...will only select lines that match the pattern, but with a -v negated pattern only those lines that don't match are selected.

...and so...

grep -xv '.\{8,63\}'

...matches all lines which consist from head to tail of anywhere between 8 and 63 characters, and the -v negated selection causes grep only to print everything else.

Display lines with not more than 4 words in the second column

Could be done with a small python script:

#!/usr/bin/env python3
import sys

for l in open(sys.argv[1]).readlines():
    l = l.strip()
    print(l) if len([s for s in l.split("<s>")[-1].split()
             if not all([s.startswith("<"), s.endswith(">")])]) <= 4 else ("")

Assuming you have python3 installed:

Copy it into an empty file, save it as get_colls.py
Run it with the file as argument:
```
python3 /path/to/get_colls.py <file>
```

Output on the example:

M07UP49A0870I422.wav    <s> haraa keelaa <bn> </s>
M07UP49A0870I423.wav    <s> <horn> jau <babble>  </s>

Explanation

The script:

splits the line by the delimiter <s>
in the second section, counts the strings, not starting with < and ending with >
prints out the lines with length <= 4

Best Answer

Related Solutions

Grep for Line Length Not in Range – How to Use Regular Expressions

Display lines with not more than 4 words in the second column

Explanation

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