[OS] Lab 5

1.echo "najaveni se:" | cat>zad1.txt
  who | cat >>zad1.txt
  echo "vkupno se:" | cat >> zad1.txt
  who | wc -l | cat >> zad1.txt


2.
    ls *.txt | cat > zad2.txt

3.
    ls -1 | wc -l | cat > zad3.txt

4.
    cat > zad4.txt
    Zz .. ss
    Ll . k L ... io
    ~Ctrl+d

5.
    grep '.' *.* | cat > zad5.txt

6.
    who | grep '^16' | cut -f 1 -d ' ' | wc -l | cat > zad6.txt

7.
     ls -p | grep '/$' | wc -l | cat > zad7.txt

8.
    ls -p | grep -v '/$' | cat > zad8.txt

9.
    ls -p | sed '/\./d' | sort | cat > zad9.txt

10.
    ls -l | tr -s ' ' | grep '^--w' | awk '{print $10}' | cat > zad10.txt

11.
    who | tr -s ' ' | grep '^16' | sort | awk '{print $1, $4;}' | cat > zad11.txt

12.
    mkdir zadaci
    cp zad*.txt zadaci