"List all files and directories in the current directory separated by commas and sorted by crtime"

Post #303032167 by Don Cragun on Wednesday 13th of March 2019 03:30:27 AM

I doubt that this will work on Ubuntu systems either, but it might be worth a try. The operating system I'm using doesn't have the debugfs or findmnt utilities and the date utility doesn't have a -d option, but the following code seems to do what I think you're trying to do.
Code:
crtime-at() {
	stat -t '%Y-%m-%d %H:%M:%S' -f '%SB%t%N%n' * | sort | awk '
		NR > 1 {printf("%s,", last) }
		{	last = $0 }
		END {	print last }'
}

if your shell allows hyphen characters in function names (which is not portable and is not required by the standards) and your system has a BSD based version of the stat utility.

Unfortunately, the stat utility is not specified by the standards either so methods used to print a file's creation time (if the file system the files reside on keeps a file's creation time [which is not required by the standards]) varies from system to system and the methods used to specify strftime()-like format strings for printing dates varies from system to system (with some systems not providing creation dates nor any way to get the date/time format you want).

If nothing else, maybe the above code will show you how to use awk to convert a sorted text file into a single line output with input lines separated by commas instead of <newline>s.

This was tested on macOS Mojave version 10.14.3 with a BSD-based stat utility (probably with macOS extensions). Note that this version just sorts on the YYYY-mm-dd HH:MM:SS date/time stamps instead of trying to get a finer grained timestamp using UNIX Epoch times.

I have no idea what the stat utility man page on your system says about printing file creation dates or about ways to specify the format of dates that are to be printed.
 

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