feri@aries:~$ mcedit test.txt

#!/bin/bash
echo "Hello world!"

#!/bin/bash
A=12
echo "A=$A"

#!/bin/bash
echo -n "Your name: "
read NAME
echo "Nice to see you, $NAME"

#!/bin/bash
CURRENT_DATE=`date '+%a'`
# CURRENT_DATE=$(date '+%a') 
echo "The name of the day is: $CURRENT_DATE"

#!/bin/bash
echo "Perimeter and area"
# Ask the length
echo -n "Length of a side: "
read SIDE
# Count the perimeter and area
PER=`expr $SIDE \* 4`
AREA=`expr $SIDE \* $SIDE`
# Show the result
echo "The perimeter is $PER, area is $AREA of a $SIDE square."

#!/bin/bash
. params.conf
echo "Name: $NAME, age: $AGE years."

#!/bin/bash
echo -n "Login name: "
read NAME
FULLNAME=`cat /etc/passwd | grep ^$NAME: | cut -d: -f5`
echo "Full name: $FULLNAME"

#!/bin/bash
echo -n "Number:"
read NUMBER
if [ "$NUMBER" -gt 5 ] ; then
  echo "A $NUMBER greater than 5"
else
  echo "A $NUMBER less than 5"
fi

#!/bin/bash
# Created by Magyar Péter
echo -n "First number:"
read NUMBER1
echo -n "Second number:"
read NUMBER2
if [ "$NUMBER1" -gt "$NUMBER2" ] ; then
  echo "A(z) $NUMBER1 is greater than $NUMBER2."
else
  if [ "$NUMBER2" -gt "$NUMBER1" ] ; then
    echo "A(z) $NUMBER2 is greater than $NUMBER1."
  else
    echo "Equal numbers."
  fi
fi

#!/bin/bash
# Created by Magyar Péter
echo "Logging starts." > ~/events.log
echo -n "First number:"
read A
echo "First number = $A" >> ~/events.log
echo -n "Second number:"
read B
echo "Second number = $B" >> ~/events.log
if [ "$A" -gt "$B" ] ; then
  echo "A(z) $A is greater than $B."
  echo "A(z) $A is greater than $B." >> ~/events.log
else
  if [ "$B" -gt "$A" ] ; then
    echo "A(z) $B is greater than $A."
    echo "A(z) $B is greater than $A." >> ~/events.log
  else
    echo "Equal numbers."
    echo "Equal numbers." >> ~/events.log
  fi
fi
echo "End of run." >> ~/events.log

#!/bin/bash
echo -n "Number of the day: "
read N
case $N in
  1) echo "Monday" ;;
  2) echo "Tuesday" ;;
  3) echo "Wednesday" ;;
  4) echo "Thursday" ;;
  5) echo "Friday" ;;
  6) echo "Saturday" ;;
  7) echo "Sunday" ;;
  *) echo "Invalid day." ;;
esac

#!/bin/bash
echo -n "Length of A: "
read A
echo -n "Length of B: "
read B
if [ "$A" -gt 0 -a "$B" -gt 0 ]
then
  echo "Area: " ` expr $A \* $B ` "."
else
  echo "Invalid side lengths."
fi

#!/bin/bash
if [ $USER != "root" ] ; then
  echo "You are not the system administrator."
  exit
fi
echo "You are the system administrator."

#!/bin/bash
echo -n "Login name: "
read NAME
if [ -z "$NAME" ] ; then 
  echo "Missing login name."
  exit
fi
FULLNAME=`cat /etc/passwd | grep ^$NAME: | cut -d: -f5`
if [ ! -z "$FULLNAME" ] ; then
  echo "Full name: $FULLNAME"
else
  echo "There is no user with name: $NAME."
fi

#!/bin/bash
# Errors should be redirected to /dev/null
mkdir /etc/alma 2>/dev/null
# The return value is in the variable named ERR
ERR=$?
if [ $ERR -ne 0 ] ; then
  echo "Error creating directory: $ERR"
fi

#!/bin/bash
echo "Name of the program: $0"
echo "Number of parameters: $#"
echo "List of parameters: $@"
echo "parameters each by each: "
for I in $@ ; do
  echo $I
done

#!/bin/bash
if [ $# -ne 2 ]
then
  echo "Usage: $0 param1 param2"
  exit
fi

#!/bin/bash
for I in $@ ;do
  echo $I
done

#!/bin/bash
while [ "$1" != "" ] ; do
  echo -n "$1 "
  shift
done

#!/bin/bash
# Kezdőérték és végérték default értékének beállítása
K="Unknown"
V="Unknown"
I=$1
while [ "$I" != "" ]
do
  case $I in
  -v | --start ) 
      shift
      V=$1
      ;;
  -k | --end ) 
      shift
      K=$1
      ;;
  *)  echo "Invalid parameter. Usage: $0 [-v startvalue] [-k endvalue]"
      exit 1
      ;;
  esac
  shift
  I=$1
done
echo "Startvalue=$K, Endvalue=$V"