Ich habe ein kurzes Einsteigertutorial zur Verwendung von GNU screen verfasst. Zu finden ist es hier.

ls -d */
ls -l | grep ^d
find . -maxdepth 1 -type d
ls -F | grep /$
ls -1 | while read line; do if [ -d "$line" ]; then echo $line; fi; done
ls -1|while read l;do [ -d "$l" ]&&echo $l;done
perl -e 'foreach(glob(".* *")){print "$_\n" if (-d $_)}'
perl -e 'opendir(DIR,".");foreach(readdir(DIR)){print $_ ."\n" if(-d $_);}'
just kidding ;)
...

echo 1234 | sed 's/\(.\)/\1\+/g' | sed 's/.$//' | bc -l
perl -e 'print eval join "+", split //, 12345;'

$width = @{$array[0]};
$height = @array;

A few days ago, I stumbled across Volker Birk's blog. 'Cause I really liked the design, I decided to rebuild my own website using NanoBlogger. Although I'm not completely satisfied with it yet, I think the result's already pretty considerable. :-) BTW: The old site is still available here.