Pemrograman Sistem Unix dan Linux

Soal :

#1
Buatlah/tulis skrip Bash di linux menggunakan perintah {if.. else..} untuk membuat pilihan menu daftar sembako dengan harga, terdapat 2 input, input pertama: nomor sembako, input kedua: jumlah item, hasl output: harga yang harus dibayar.

#1bin/bash

Clear

echo “Daftar Sembako   “;

echo “………………..   “;

echo “1.Beras          “;

echo “2.Gula Pasir     “;

echo “3.Minyak makan   “;

echo “4.Telur          “;

echo “5.Sarden         “;

echo “6.Exit           “;

read –P “Pilihan anda [1-6] : “pil ;

if [$pil –aq 1] ;

then

      echo “Banyak kilo gram ;

      read jum

      let bayar = jum *10000;

elif [$angka eq-2] ;

them

      echo “Banyak kilo gram ;

      read jum

      let bayar = jum *5000;

elif [$angka eq-3] ;

them

      echo “Banyak liter ;

      read jum

      let bayar = jum *7000;

elif [$angka eq-4] ;

them

      echo “Banyak butir ;

      read jum

      let bayar = jum *10000;

elif [$angka eq-5] ;

them

      echo “Banyak kaleng ;

      read jum

      let bayar = jum *12000;

elif [$angka eq-6] ;

then

      exit 0

else

      echo “Maaf stok Kosong”

      exit

fi

echo “ Harga bayar : Rp $bayar”

echo “THX

Hasil

[Putri@linux$].belanja.sh

Daftar Sembako

………………..

1.Beras

2.Gula pasir

3.Telur

5.Sarden

0.exit

Input > Pilihan anda = 1

Input > Banyak kilo = 2

Output > Harga bayr = Rp.20000

     

     

     

     

#2

Di pemograman Linux sangat dikenal pustaka/library ncurses, ncurses adalah pustaka pemrograman yang menyediakan antarmuka pemrograman aplikasi (API) yang memungkinkan programmer untuk menulis antarmuka pengguna (UI) berbasis teks dengan cara yang bebas terminal. Ini adalah toolkit untuk mengembangkan perangkat lunak aplikasi "mirip GUI " yang berjalan di bawah emulator terminal . Ini juga mengoptimalkan perubahan layar, untuk mengurangi latensi yang dialami saat menggunakan shell remote. Buatlah skrip membuat Jendela/Windows sederhana dengan fungsi box( ), berikan penjelasan sedikit algoritma-nya.

#2includ <nurses.h>  

WINDOWS *create_newwin (int height, int width, int starty, int startx);

Void destroy_win (WINDOW *local_win);

Int main(int argv[])

{     WINDOW *my_win;

      Int startx, starty, width, height;

      Int ch;

     

      Initcr();                     /*Strat curses mode           */

      cbreak();                     /*Line buffring disabled, Pass on

                                     *everty thing to me          */

      Keypad (stdscr,TRUE);         /*I need that nifty F1        */

      height : 6;

      width : 20;

      starty : (LINES - height) /4; /*calculating for a center Palocemet */

      startx : (COLS - width /4; /* of the window                 */

      printw : (“Press F1 to exit”);

      refresh () ;

      my_win : create-newwin (height, width,starty,startx);

      while ((ch = getch () ) ! = KEY_F (1))

      {     switch (ch)

            {     case KEY_LEFT :

                        destroy_win (my_win);

                        my_win = create_newwin (height, width,starty,--statx);

                        break;                                               

                  case KEY_RIGHT :

                        destroy_win (my_win);

                        my_win = create_newwin (height, width,starty,--statx);

                        break;

                  case KEY_UP :

                        destroy_win (my_win);

                        my_win = create_newwin (height, width,starty,--statx);

                        break;

                  case KEY_DOWN :

                        destroy_win (my_win);

                        my_win = create_newwin (height, width,starty,--statx);

                        break;                                               

            }

      }

      edwin ();               /*End curses mode                             */

      return 0;

}

WINDOW *create_newwin (int height, int width, int starty, int startx)

{       WINDOW *local_win;

        Local_win = newwin (height, width, starty,startx);

        Box(local_win, 0 , 0);               /* 0, 0 gives default characcters

                                              *for the vertical and horizontal

                                              *lines                        */

        Wrefresh(local_win);                 /*show the box                 */

        return local_win;

}

Void destroy_win(WINDOW *local_win)

{

      /*box (local_win, ‘ ‘, ‘ ‘); : This won’t produce the desired

       *result of erasing the window. It will leave it’s four corners

       *and so an ugly remnant of window.

       */

  Wborder (local_win,‘ ‘, ‘ ‘, ‘ ‘, ‘ ‘, ‘ ‘, ‘ ‘, ‘ ‘, ‘ ‘,);

      /* The parameters taken are

       *1. Win: the window on which to operate

       *2. Is : character to be used for the left side of the window

       *3. Rs : character to be used for the right side of the window

       *4. Ts : character to be used for the top side of the window

       *5. Bs : character to be used for the bottom side of the window

       *6. Tl : character to be used for the top left corner of the window

       *7. Tr : character to be used for the top right corner of the window

       *8. Bl : character to be used for the battom left corner of the window

       *9. Br : character to be used for the battom right corner of the window

       */

       Wrefresh(local_win) ;

       Delwin(locawin);

     

     

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