Here’s how to list S3 files recursively.
aws s3 ls s3://mybucket --recursive | awk '{print $4}' |
By default, the results display date, time, disk size and filename. Use awk to display the filename only.
ls
Count Number of Files in Directory
Get a count of the number of files in a directory.
# using ls ls | wc -l ls -Aq | wc -l # include hidden files find . ! -name . -prune -print | grep -c / find .//. ! -name . -print | grep -c // # using tree if installed. yum install tree. apt-get install tree tree |
List Files Human Readable
How to list files that’s human readable in GB.
ls -lrt --block-size=G |
- l = long format
- t = sort time/date
- r = reverse order
- –block-size=M (Mb) or G (Gb)
Display Octal Permissions
If you’re working on the command line, listing a directory to display permissions of files is not always the most user-friendly. Here’s an example of listing the files in a directory using the ‘ls -al’ command.
$ ls -al total 20 drwxrwsr-x 2 ulysses www-data 4096 Feb 26 13:31 . drwxrwsr-x 10 ulysses www-data 4096 Feb 26 02:30 .. -rw-rw-r-- 1 ulysses www-data 0 Feb 26 13:31 display.txt -rwxrwxr-x 1 ulysses ulysses 659 Dec 3 06:40 sync_com.sh -rw-r--r-- 1 ulysses ulysses 181 Feb 26 13:26 sync_db.sh -rwxrwxr-x 1 ulysses ulysses 244 Feb 26 13:23 sync_s3.sh |
There has to be a better way to display permissions?
Well, there is. It’s a command called “stat” that displays the detailed status about a file or file system. On one of the switches of the stat command, is an option that allows you to display the file status in human readable format. Here’s an example using the stat from the command line.
$ stat -c '%A %a %n' * 664 display.txt 775 sync_com.sh 644 sync_db.sh 775 sync_s3.sh |
The result is a list of files in a directory with the file permissions in human readable format!