CODEWITHSUNDEEP
bashunix
Simon B
Simon B

Reputation: 153

Bash - how to list files with size in bytes

I am wanting to use the ls command to output the files in a directory however I need the file size in bytes.

Is this possible with the ls command?

on similar questions i've found this ls -l --block-size=M which outputs the file size in megabytes however I cannot seem to get it to work with just bytes.

Upvotes: 15

Views: 30592

Answers (3)

William Pursell
William Pursell

Reputation: 212424

If you are looking for statistics about files, then you want to use stat rather than ls. eg, with gnu stat:

stat --format=%n:%s *

Upvotes: 23

James Brown
James Brown

Reputation: 37424

$ ls -l foo.tar.gz
-rw-r--r-- 1 james james 68964464 Mar 12  2014 foo.tar.gz

On my ls (GNU coreutils) 8.26 :

$ ls -s --block-size=1 foo.tar.gz
68972544 foo.tar.gz

Upvotes: 13

TCulp
TCulp

Reputation: 363

ls -l | tr -s " " | cut -d " " -f5,9-

tr -s " " replaces multiple spaces in sequence with one space

cut -d " " -f5,9- sets the delimeter to a space, and prints the fields 5 and 9 onwards. The 9 onwards is because filenames can have spaces in them, and just printing field 9 would on;y get the first word

Bonus: If you want to switch the output order ($filename $bytes), you can add on a

| sed 's_\([0-9]*\) \(.*\)_\2 \1_'

Upvotes: 2

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