zad 1.
strings qt-sql-example.bin | grep ^SELECT
rm qt-sql-example.bin

zad 2.
a) tr -d '\r' < text-dos.txt
b) echo "hi there" | tr a-z A-Z
c) echo "If you can read this, you can spot the missing vowels" | tr -d "a" |tr -d "e" | tr -d "i" | tr -d "o" | tr -d "u"
d) echo "Chragn grtb qbjpvch cbyrtn an ..." | tr '[a-z]' '[n-za-m]' | tr '[A-Z]' '[N-ZA-M]'

zad 3.
a) sed -E '/\r/d' text-dos.txt
b) sed -E '/^$/d' lorem-2.txt
c) sed -e '/^$/d' lorem-2.txt -e '/^Nulla/!d' lorem-2.txt

zad 4.
kodowanie: file kons.txt (plik kodowany jest w UTF-16)
przekonwertowanie: iconv -f utf-16 -t utf-8 kons.txt

zad 5.
diff file1.txt file2.txt
wynik:
1a2
> added extra line here
5c6
< All day long On his feet; Up and down until he's numb;
---
> All day long On his feat; Up and down untile he's numb;

zad 6.


zad 7.
a) rozpakowanie: unxz microblaze.tar.xz
spakowanie: bzip2 microblaze.tar
b) zgrep "http" plwiki.txt.gz > urls.txt