Wyrażenia Regularne:
1.
ls lista*
albo
find  -name lista\*
ls -a | grep "lista*"

2.
ls [AaWw]*
albo
find  -name [AaWw]\*

3.
ls z*a
albo
find  -name z*a

4.
ls lista* |sort -r
albo
find -name lista\* | sort -r

5.
ls *[0-9]
albo
find -name \*[0-9]

6.
ls *o*[0-9]
albo
find -name \*o\*[0-9]



Ćwiczenia:
1.  ll | head | tail -1
2.  ls *[ab] | wc -l
3.  ls | grep -v ^c
4.  find -type f | wc -l
5.  find `pwd` -type d | wc -l
6.  find `pwd` -type f | wc -l
7.  find `pwd` -type f -name *.java| wc -l
8.  ls-l | grep "$USER"
    ls-l | grep `whoami`
    find -user $USER -maxdepth 1
9.  who | grep `whoami` | wc -l
10. ls -l | tr -s [:blank:] | cut -f5 -d" "
11. ls -l | tr -s [:blank:] | cut -f6,7,8 -d" " | sort| uniq
12. ls -lSr | tail -n 1| tr -s [:blank:] | cut -f5 -d" "