Jan Kończak

Zadanie 1

user@host ~ $ myFunction(){ echo "Hello world!"; }
user@host ~ $ myFunction
Hello world!

Zadanie 2

user@host ~ $ repeatText(){ for I in $(seq $1); do echo "$2"; done; }
user@host ~ $ repeatText 3 "Example text."
Example text.
Example text.
Example text.

Zadanie 3

user@host ~ $ makeAPrivateFile()(umask 077; [ -e "$1" ] || touch "$1")
user@host ~ $ ls -la file file2
ls: nie ma dostępu do 'file2': Nie ma takiego pliku ani katalogu
-rw-r--r-- 1 so users 0 05-14 13:45 file
user@host ~ $ makeAPrivateFile file
user@host ~ $ makeAPrivateFile file2
user@host ~ $ ls -la file file2
-rw-r--r-- 1 so users 0 05-14 13:45 file
-rw------- 1 so users 0 06-04 12:24 file2

Zadanie 4

myTree(){
    [ -e "$1" ] || return
    echo "$2${1##*/}"
    [ -L "$1" ] && return
    for S in "$1"/*
    do
        myTree "$S" "$2  "
    done
}

myTree(){
  ls -A "$1" 2>/dev/null | while read F
    do
      echo "$2$F"
      [ ! -L "$1/$F" -a -d "$1/$F" ] && myTree "$1/$F" "  $2"
    done
}

Zadanie 5

factorial(){
  if [ "$1" -eq 1 ]
  then
    echo 1;
  else
    echo $(( "$1" * $(factorial $(("$1" - 1)) ) ))
  fi
}

Zadanie 6

#!/bin/sh
trap "echo \"Otrzymano sygnał INT\"" INT
sleep 10s
echo "Gotowe"

Zadanie 7

#!/bin/sh
TMPFILE="$(mktemp)"
echo "Plik tymczasowy: $TMPFILE"
trap "echo \"Usuwam plik tymczasowy\"; rm \"$TMPFILE\"" EXIT
sleep 10s
echo "Gotowe"

Zadanie 11

yes | rm -i plik_?

Zadanie 14

seq -w 999 | xargs mkdir

Zadanie 15

locate '/usr/share/*.pdf' | xargs md5sum

locate '/usr/share/*.pdf' | while read F; do md5sum "$F"; done

Zadanie 16

grep -lR 'typedef signed char' /usr/include | xargs -I SRC cp -v SRC /tmp