Systemy zadanka - 4

1.
find / -type f | sort | uniq > all_file
grep "\.h$" all_files > all_h

2.
find /usr -type f -name "*\.c" -size -2k |wc -l
3.
find /usr/include -maxdepth 1 -type f -name "*\.h" -exec grep "#define" {}
\; | wc -l

4.
ls -l -S /etc | head -n 4

5.
a)
find roboczy/ \( -name '[ab]*' -o -name '[g-n]*' \) -exec cp {} kosz/ \;
lub
find roboczy/ -name "[a,b,g-n]*" -exec cp {} kosz/ \;
b)
for i in `ls ./roboczy | grep ^[aoe]`; do mv "./roboczy/$i"
"./roboczy/${i^}"; done
c)
find roboczy/ -name "c*0[1-9]" -exec mv {} kosz/ \;

6.
tr -d '\r' < plik > plik2

7.
m=`df /dev/sda -h | tail -n 1 | cut -c29-33`
echo $m

8.
last | grep -v still | head -n 5 | cut -c17-40