3 PROGRAM DASAR SHELL SCRIPT

Shell script adalah program pada sistem operasi LINUX yang merupakan sekumpulan perintah atau kode  yang disimpan pada sebuah file. Ekestensi dari file Shell Script adalah .sh  
Dibawah ini beberapa contoh program menggunakan shell script

Program 1
Menghitung Gaya

 

ECHO "MENGHITUNG GAYA(F)" ECHO -N "MASUKKAN NILAI MASSA : " READ MASSA ECHO -N "MASUKKAN NILAI PERCEPATAN : " READ PERCEPATAN LET GAYA=$MASSA*$PERCEPATAN ECHO ECHO " |=====================|" ECHO " | *** RUMUS *** |" ECHO " | F = M X A |" ECHO " |=====================|" ECHO " | F = GAYA |" ECHO " | M = MASSA |" ECHO " | A = PERCEPATAN |" ECHO " |=====================|" ECHO ECHO "PERHITUNGAN" ECHO " F = M X A" ECHO " F = "$MASSA" X "$PERCEPATAN ECHO " F = "$GAYA" NEWTON"

Program 2
Menentukan Nilai Akhir Huruf , menggunakan perkondisian if

 

ECHO -N "MASUKKAN NILAI TUGAS1 : " READ T1 ECHO -N "MASUKKAN NILAI TUGAS2 : " READ T2 ECHO -N "MASUKKAN NILAI UTS : " READ UTS ECHO -N "MASUKKAN NILAI TUGAS3 : " READ T3 ECHO -N "MASUKKAN NILAI TUGAS4 : " READ T4 ECHO -N "MASUKKAN NILAI UAS : " READ UAS ECHO -N "PROSENTASE KEHADIRAN : " READ ABSEN A=10/100 B=25/100 LET NILAI=$T1*$A+$T2*$A+$UTS*$B+$T3*$A+$T4*$A+$UAS*$B+$ABSEN*$A ECHO " |=========================|" ECHO " | NILAI AKHIR : "$NILAI" |" IF [ $NILAI -GE 80 ] THEN ECHO " | NILAI HURUF : A |" ECHO " |=========================|" ELIF [ $NILAI -GE 60 ] THEN ECHO " | NILAI HURUF : B |" ECHO " |=========================|" ELIF [ $NILAI -GE 40 ] THEN ECHO " | NILAI HURUF : C |" ECHO " |=========================|" ELIF [ $NILAI -GE 20 ] THEN ECHO " | NILAI HURUF : D |" ECHO " |=========================|" ELSE ECHO " | NILAI HURUF : E |" ECHO " |=========================|" FI

Program 3
Program Shell dengan Menu menggunakan perkondisian if.
 

 

LAGI='Y' WHILE [ $LAGI == 'Y' ] || [ $LAGI == 'Y' ]; DO CLEAR ECHO "============================================" ECHO " MENU PROGRAM " ECHO "============================================" ECHO "1. PROGRAM MENGHITUNG BESAR GAYA (F)" ECHO "2. PROGRAM MENGHITUNG TEKANAN (P)" ECHO "3. PROGRAM MENGHITUNG ENERGI POTENSIAL (EP)" ECHO "4. PROGRAM MENGHITUNG ENERGI KINETIK (EK)" ECHO "5. PROGRAM MENGHITUNG ENERGI MEKANIK (EM)" ECHO "6. EXIT" ECHO "============================================" ECHO -N "MASUKKAN PILIHAN MENU [1-6]: " READ PIL ECHO "" IF [ $PIL -EQ 1 ] THEN ECHO "MENGHITUNG GAYA(F)" ECHO -N "MASUKKAN NILAI MASSA : " READ MASSA ECHO -N "MASUKKAN NILAI PERCEPATAN : " READ PERCEPATAN LET GAYA=$MASSA*$PERCEPATAN ECHO ECHO " |=====================|" ECHO " | *** RUMUS *** |" ECHO " | F = M X A |" ECHO " |=====================|" ECHO " | F = GAYA |" ECHO " | M = MASSA |" ECHO " | A = PERCEPATAN |" ECHO " |=====================|" ECHO ECHO "PERHITUNGAN" ECHO " F = M X A" ECHO " F = "$MASSA" X "$PERCEPATAN ECHO " F = "$GAYA" NEWTON" ELIF [ $PIL -EQ 2 ] THEN ECHO "MENGHITUNG TEKANAN(P)" ECHO -N "MASUKKAN NILAI GAYA : " READ GAYA2 ECHO -N "MASUKKAN NILAI PERCEPATAN : " READ PER LET TEKANAN=$GAYA2/$PER ECHO ECHO " |=====================|" ECHO " | *** RUMUS *** |" ECHO " | P = F / A |" ECHO " |=====================|" ECHO " | P = TEKANAN |" ECHO " | F = GAYA (NEWTON) |" ECHO " | A = PERCEPATAN |" ECHO " |=====================|" ECHO "" ECHO "PERHITUNGAN" ECHO " P = "$GAYA2" / "$PER ECHO " P = "$TEKANAN" " ELIF [ $PIL -EQ 3 ] THEN ECHO "MENGHITUNG ENERGI POTENSIAL(EP)" ECHO -N "MASUKKAN NILAI MASSA BENDA : " READ MASSA1 ECHO -N "MASUKKAN NILAI PERCEPATAN GRAVITASI : " READ GRAF ECHO "MASUKKAN NILAI TINGGI BENDA DARI PERMUKAAN TANAH :" READ TINGGI LET POTENSIAL=$MASSA1*$GRAF*$TINGGI ECHO ECHO " |=======================================|" ECHO " | *** RUMUS *** |" ECHO " | EP = M X G X H |" ECHO " |=======================================|" ECHO " | EP = ENERGI POTENSIAL (J) |" ECHO " | M = MASSA BENDA (KG) |" ECHO " | G = PERCEPATAN GRAVITASI |" ECHO " | H = TINGGI BENDA DARI PERMUKAAN TANAH |" ECHO " |=======================================|" ECHO ECHO "PERHITUNGAN" ECHO " EP = M X G X H" ECHO " EP = "$MASSA1" * "$GRAF" * "$TINGGI ECHO " F = "$POTENSIAL" JOULE" ELIF [ $PIL -EQ 4 ] THEN ECHO "MENGHITUNG ENERGI KINETIK(EK)" ECHO -N "MASUKKAN NILAI MASSA BENDA : " READ MASSA2 ECHO -N "MASUKKAN NILAI KECEPATAN : " READ KEC LET KINETIK=$MASSA2*($KEC*$KEC)/2 ECHO ECHO " |=======================================|" ECHO " | *** RUMUS *** |" ECHO " | EK = M X (V X V) / 2 |" ECHO " |=======================================|" ECHO " | EK = ENERGI KINETIK (J) |" ECHO " | M = MASSA BENDA (KG) |" ECHO " | V = KECEPATAN BENDA |" ECHO " |=======================================|" ECHO ECHO "PERHITUNGAN" ECHO " EK = M X (V X V) / 2 " ECHO " EK = "$MASSA2" * ["$KEC"*"$KEC"] / 2" ECHO " F = "$KINETIK" JOULE" ELIF [ $PIL -EQ 5 ] THEN ECHO "MENGHITUNG ENERGI MEKANIK(EM)" ECHO -N "MASUKKAN NILAI ENERGI POTENSIAL : " READ EP ECHO -N "MASUKKAN NILAI ENERGI KINETIK : " READ EK LET MEKANIK=$EP+$EK ECHO ECHO " |=======================================|" ECHO " | *** RUMUS *** |" ECHO " | EM = EP + EK |" ECHO " |=======================================|" ECHO " | EK = ENERGI MEKANIK (J) |" ECHO " | EP = ENERGI POTENSIAL (J) |" ECHO " | EK = ENERGI KINETIK (J) |" ECHO " |=======================================|" ECHO ECHO "PERHITUNGAN" ECHO " EM = EP + EK " ECHO " EK = "$EP" + "$EK ECHO " F = "$MEKANIK" JOULE" ELIF [ $PIL -EQ 6 ] THEN EXIT ELSE ECHO "MAAF, NOMOR MENU TIDAK TERSEDIA" FI ECHO "" ECHO -N "INGIN LANJUT KE PROGRAM YANG LAIN? [Y/N] : " READ LAGI WHILE [ $LAGI != 'Y' ] && [ $LAGI != 'Y' ] && [ $LAGI != 'N' ] && [ $LAGI != 'N' ]; DO ECHO "MAAF, INPUT YANG ANDA MASUKKAN SALAH" ECHO -N "LANJUT KE PROGRAM YANG LAIN? [Y/N]: " READ LAGI; DONE DONE
Program - program diatas merupakan contoh program SHELL yang masih sangat sederhana yang mudah mudahan dapat membantu agan untuk belajar bahasa pemrograman SHELL SCRIPT.
Untuk referensi materi tentang pemrograman SHELL bisa dilihat DISINI.
selain contoh program diatas ada juga

 PROGRAM SHELL - RENTAL CD

Itulah beberara program shell yang bisa saya bagikan semoga bermanfaat.

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