theseus$ pwd
/home/turing/jdfw
theseus$ mkdir infob2
theseus$ cd infob2

theseus$ cp /ftp/turing/root/pub/vorlesungen/ws01/prog/2/* .
theseus$ ls -la
total 12
drwxrwxr-x   2 jdfw     student      512 Nov  2 12:44 .
drwx------  17 jdfw     student     2560 Nov  2 12:43 ..
-rw-r--r--   1 jdfw     student       72 Nov  2 12:44 colors
-rw-r--r--   1 jdfw     student       50 Nov  2 12:44 numbers

theseus$ sort -n numbers
4
9
33
47
59
69
72
77
95
524
531
648
904
999
1001

theseus$ sort -r colors
weiss
violett
tuerkis
schwarz
rot
rosa
orange
lila
gruen
grau
gelb
blau

theseus$ cat colors numbers >colnum

theseus$ wc -w numbers
   15 numbers

theseus$ cat colors | wc -l >>colors
theseus$ cat colors
gelb
rot
gruen
blau
schwarz
weiss
rosa
lila
violett
tuerkis
orange
grau
   12

theseus$ sort -nr numbers | head -4 >highnum
theseus$ cat highnum
1001
999
904
648

theseus$ sort colors | head -4 | tail -2
gelb
grau

theseus$ mkdir tempcol
theseus$ mv col* tempcol/
theseus$ cd tempcol
theseus$ ls
colnum  colors

theseus$ pwd
/home/turing/jdfw/infob2/tempcol
theseus$ rm *
theseus$ cd ..
theseus$ rmdir tempcol/
theseus$ ls
highnum  numbers
theseus$ rm *
theseus$ cd ..
theseus$ rmdir infob2
theseus$ pwd
/home/turing/jdfw