get just the integer from wc in bash

user_369503 0
Viewed 103480

Is there a way to get the integer that wc returns in bash?

Basically I want to write the line numbers and word counts to the screen after the file name.

output: filename linecount wordcount Here is what I have so far: 

files=`ls`
for f in $files;
do
        if [ ! -d $f ] #only print out information about files !directories
        then
                # some way of getting the wc integers into shell variables and then printing them
                echo "$f $lines $ words"
        fi
done

wc bash
19 Answers

Something like this may help:

#!/bin/bash
printf '%-10s %-10s %-10s\n' 'File' 'Lines' 'Words'
for fname in file_name_pattern*; {
    [[ -d $fname ]] && continue
    lines=0
    words=()
    while read -r line; do
        ((lines++))
        words+=($line)
    done < "$fname"
    printf '%-10s %-10s %-10s\n' "$fname" "$lines" "${#words[@]}"
}
user_126074430

To (1) run wc once, and (2) not assign any superfluous variables, use

read lines words <<< $(wc < $f | awk '{ print $1, $2 }')

Full code:

for f in *
do
    if [ ! -d $f ]
    then
        read lines words <<< $(wc < $f | awk '{ print $1, $2 }')
        echo "$f $lines $words"
    fi
done

Example output:

$ find . -maxdepth 1 -type f -exec wc {} \; # without formatting
 1  2 27 ./CNAME
  21  169 1065 ./LICENSE
 33 130 961 ./README.md
  86  215 2997 ./404.html
  71  168 2579 ./index.html
 21  21 478 ./sitemap.xml

$ # the above code
404.html 86 215
CNAME 1 2
index.html 71 168
LICENSE 21 169
README.md 33 130
sitemap.xml 21 21
user_123725060

Solutions proposed in the answered question doesn't work for Darwin kernels.

Please, consider following solutions that work for all UNIX systems:

  1. print exactly the number of lines of a file:
wc -l < file.txt | xargs
  1. print exactly the number of characters of a file:
wc -m < file.txt | xargs
  1. print exactly the number of bytes of a file:
wc -c < file.txt | xargs
  1. print exactly the number of words of a file:
wc -w < file.txt | xargs
user_39018490

There is a great solution with examples on stackoverflow here

I will copy the simplest solution here:

FOO="bar"
echo -n "$FOO" | wc -l | bc                     # "3"

Maybe these pages should be merged?

user_20318490 
files=`ls`
echo "$files" | wc -l | perl -pe "s#^\s+##"
user_16653010

You have to use input redirection for wc:

number_of_lines=$(wc -l <myfile.txt)

respectively in your context

echo "$f $(wc -l <"$f") $(wc -w <"$f")"
user_19344280
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