CODEWITHSUNDEEP
bashunixsedawkwc
Marek Sebera
Marek Sebera

Reputation: 40661

Bash: Find file with max lines count

This is my try to do it

then merge it to single line

find . -name '*.java' | xargs wc -l | sed '$d' | awk 'max=="" || data=="" || $1 > max {max=$1 ; data=$2} END{ print max " " data}'

Can I somehow implement counting just non-blank lines?

Upvotes: 13

Views: 8596

Answers (4)

Vijay
Vijay

Reputation: 67291

find . -name "*.java" -type f | xargs wc -l | sort -rn | grep -v ' total$' | head -1

Upvotes: 18

holygeek
holygeek

Reputation: 16185

Something like this might work:

find . -name '*.java'|while read filename; do
    nlines=`grep -v -E '^[[:space:]]*$' "$filename"|wc -l`
    echo $nlines $filename
done|sort -nr|head -1

(edited as per Ed Morton's comment. I must have had too much coffee :-) )

Upvotes: 0

Ed Morton
Ed Morton

Reputation: 203985

To get the size of all of your files using awk is just:

$ find . -name '*.java' -print0 | xargs -0 awk '
BEGIN { for (i=1;i<ARGC;i++) size[ARGV[i]]=0 }
{ size[FILENAME]++ }
END { for (file in size) print size[file], file }
'

To get the count of the non-empty lines, simply make the line where you increment the size[] conditional:

$ find . -name '*.java' -print0 | xargs -0 awk '
BEGIN { for (i=1;i<ARGC;i++) size[ARGV[i]]=0 }
NF { size[FILENAME]++ }
END { for (file in size) print size[file], file }
'

(If you want to consider lines that contain only blanks as "empty" then replace NF with /^./.)

To get only the file with the most non-empty lines just tweak again:

$ find . -name '*.java' -print0 | xargs -0 awk '
BEGIN { for (i=1;i<ARGC;i++) size[ARGV[i]]=0 }
NF { size[FILENAME]++ }
END {
   for (file in size) {
      if (size[file] >= maxSize) {
         maxSize = size[file]
         maxFile = file
      }
   }
   print maxSize, maxFile
}
'

Upvotes: 0

Shawn Chin
Shawn Chin

Reputation: 86924

find . -type f -name "*.java" -exec grep -H -c '[^[:space:]]' {} \; | \
    sort -nr -t":" -k2 | awk -F: '{print $1; exit;}'

Replace the awk command with head -n1 if you also want to see the number of non-blank lines.

Breakdown of the command:

find . -type f -name "*.java" -exec grep -H -c '[^[:space:]]' {} \; 
'---------------------------'       '-----------------------'
             |                                   |
   for each *.java file             Use grep to count non-empty lines
                                   -H includes filenames in the output
                                 (output = ./full/path/to/file.java:count)

| sort -nr -t":" -k2  | awk -F: '{print $1; exit;}'
  '----------------'    '-------------------------'
          |                            |
  Sort the output in         Print filename of the first entry (largest count)
reverse order using the         then exit immediately
  second column (count)

Upvotes: 26

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