如何确定ls命令输出是文件还是目录Bash

Question

ls command outputs everything that is contained in current directory. For example ls -la will output something like this

drwxr-xr-x  3   user  user  4096  dec  19  17:53  .
drwxr-xr-x 15   user  user  4096  dec  19  17:39  ..
drwxrwxr-x  2   user  user  4096  dec  19  17:53  tess  (directory)
-rw-r--r--  1   user  user   178  dec  18  21:52  file  (file)
-rw-r--r--  1   user  user    30  dec  18  21:47  text  (file)

And what if I want to know how much space does all files consume. For that I would have to sum $5 from all lines with ls -la | awk '{ sum+=$5 } END{print sum}' ls -la | awk '{ sum+=$5 } END{print sum}' . So how can I only sum size of files and leave directories behind?

Answer 1

You can use the following :

find . -maxdepth 1 -type f -printf '%s\n' | awk '{s+=$1} END {print s}'

The find command selects all the files in the current directory and output their size. The awk command sums the integers and output the total.

Answer 2

Don't.

One of the most quoted pages on SO that I've seen is https://unix.stackexchange.com/questions/128985/why-not-parse-ls-and-what-do-to-instead .

That being said and as a hint for further development, ls -l | awk '/^-/{s+=$5} END {print s}' ls -l | awk '/^-/{s+=$5} END {print s}' will probably do what you ask.