Shell: ls

sort files by time

ls -lt

sort files by size

ls -lS

directory seen as standard file

ls -ld
 
# ls -ld /bin
drwxr-xr-x  2 root  wheel  1024 Nov 22 15:45 /bin
 
# ls -ld /*
-r--r--r--   1 root  wheel  6197 Nov 22 15:45 /COPYRIGHT
drwxr-xr-x   2 root  wheel  1024 Nov 22 15:45 /bin
drwxr-xr-x   9 root  wheel  1536 Nov 22 15:56 /boot
dr-xr-xr-x  11 root  wheel   512 Nov 22 16:56 /dev
-rw-------   1 root  wheel  4096 Nov 22 15:56 /entropy
drwxr-xr-x  27 root  wheel  2560 Nov 29 07:18 /etc
lrwxr-xr-x   1 root  wheel     8 Oct 28  2015 /home -> usr/home
drwxr-xr-x   4 root  wheel  1536 Nov 22 15:54 /lib
drwxr-xr-x   3 root  wheel   512 Nov 22 15:45 /libexec
[...]

we can add to /etc/csh.cshrc

/etc/csh.cshrc

alias   ls      ls -k
# long list
alias   ll      ls -lah
alias   dir     ls -lah
# sort by size
alias   ll-s     ls -Sl
# sort by time
alias   ll-t     ls -lt
# show dirs as file
alias   ll-d     ls -ld
 
 
setenv  CLICOLOR

use -r for reverse sort, es:

ls -lSr

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