GeezerVison is showing github.com — ProgrammingLearning/Corrections/Correction_Bash.sh at master · P1kachu/ProgrammingLearning

Expand file tree

Correction_Bash.sh

Copy path

More file actions

Latest commit

History

352 lines (298 loc) · 7.54 KB

Correction_Bash.sh

Copy path

File metadata and controls

352 lines (298 loc) · 7.54 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

# BashCorrection.sh

# BashCorrection

# Created by P1kachu on 15/07/15.

# Reviewed by:

# - No one yet.

#!/bin/sh

# Part One:

# FIXME: Declare variables

# Declare two variables: an integer named "age", and a string named "name" with corresponding values (your name and age)

age=20

name='Stan'

# FIXME: Print

# Print the following sentence in the console "You are NAME and you are AGE years old !". Don't forget to add a newline at the end

echo "You are $name and you are $age years old !"

# FiXME: Concatenation

# Create a new string variable called "hello" which value is "Hello ". Add "name" at the end of "hello" (Concatenation) then print it

hello="Hello "

hello="$hello$name"

echo $hello

# FIXME: Array

# create a new string array called "shoppingList", with three elements of your choice. Create an int variable containing the number of

# elements in "shoppingList" (using a function of the array/using the array)

shoppingList=('Raspberry Pi' 'NASA Shuttle' 'Aston Martin One-77') # Simple wishes

shoppingListLength=3

# FIXME: For-loop - Integer

# Create a simple for-loop for an integer "i" going from 1 to 10 that print the value of "i"

for (( i = 0; i < 10; i++ )); do

echo $i

done

# FIXME: For-loop - shoppingList

# Create a for loop that iterate through "shoppingList" and prints each element.

for (( i = 0; i < $shoppingListLength; i++ )); do

echo "${shoppingList[$i]}"

done

# FIXME: Foreach-loop

# Do the same with a foreach-loop.

for item in "${shoppingList[@]}"

echo $item

done

# FIXME: If-statement

# Modify the first for-loop (with i from 1 to 10) such that it prints "(value of i) is even" when "i" is divisible

# by 2 (You may want to learn more about "modulo" (%)). Else, print "(value of i) is odd".

for (( i = 0; i < 10; i++ )); do

if [[ $(($i % 2)) -eq 0 ]]; then

echo "$i is even"

else

echo "$i is odd"

done

# FIXME: Sum Up

# Create a string variable called "element" with the value of your choice. Then create a for-loop that checks if "shoppingList" contains

# "element". If yes, print "You have to buy (value of element) !", and stop the loop (search how to stop a loop).

# If not, print "Nope, you don't need (value of "element")".

element='NASA Shuttle'

found=false

for item in "${shoppingList[@]}"; do

if [[ "$item" == "$element" ]]; then

found=true

break

done

if [[ "$found" == true ]]; then

echo "You have to buy $element !"

else

echo "Nope, you don't need $element"

# Part Two:

# FIXME: Functions - Ascii

# Create a function that returns nothing and which doesn't takes any parameter. It should just be named "TriForce"

# and print the TriForce symbol (one triangle over two other ones, can be found on internet) with "TRIFORCE"

# Don't forget to call the function !

TriForce()

{

echo " /\\ "

echo " /__\\ "

echo " /\\ /\\ "

echo "/__\\/__\\ "

echo "TRIFORCE"

}

TriForce

# FIXME: Functions - One parameter

# Create a function that takes a string as parameter and returns "Hello (value of string) !"

HelloFunc()

{

echo "Hello $1 !"

}

HelloFunc "World"

# FIXME: Functions - Multiple parameters

# Create a function that takes two integers as parameters and returns the addition of these two.

# You can do the same with multiplication, subtraction and division.

Addition()

{

echo $(( $1 + $2 ))

}

Subtraction()

{

echo $(( $1 - $2 ))

}

Multiplication()

{

echo $(( $1 * $2 ))

}

Division()

{

echo $(( $1 / $2 ))

}

# I DO NOT USE RETURN STATEMENTS FOR A SIMPLE REASON: http://stackoverflow.com/a/17336953/3803389

Addition 18 24

Division 336 8

Multiplication 21 2

Subtraction 44 2

# FIXME: User entry

# Create a string variable that takes what the user enter in the console as value. Then print "You entered (value of string)"

echo -n "Enter smthg: "

read userInput

echo "You entered $userInput"

# FIXME: While loop

# Create a while loop that takes a number and divides it by 2 until it is less than 3

nb=100

while [[ "$nb" -ge 3 ]]; do

echo $nb

((nb/=2))

done

# FIXME: do-While loop

# Do the same with a do-while loop

# NO REAL DO...WHILE

nbTwo=100

while : ; do

echo $nbTwo

((nbTwo/=2))

[[ "$nbTwo" -ge 3 ]] || break

done

# FIXME: Random generator

# Create a function that returns a random number

getMaxInt()

{

for ((i = 1, n = 2;; n = 1 << ++i)); do

if [[ ${n:0:1} == '-' ]]; then

printf -- "%20s" $(((1 << i) - 1))

exit

done

}

MAX_INT=$(getMaxInt)

GetRandom()

{

echo $(( RANDOM % $MAX_INT ))

}

GetRandom

# FIXME: Random generator with bounds

# Create another function that returns a random number between two bounds given as parameters.

GetRandomBounded()

{

echo $(( $(( RANDOM % $(($2 - $1 + 1)) )) + $1))

# OR

# echo $(shuf -i 2000-65000 -n 1) # from http://stackoverflow.com/a/2556282/3803389

}

GetRandomBounded 10 15

# FIXME: Multidimensional array

# Create a two dimensional int array of 3 columns and 3 rows. Use 2 for-loops to add a random number

# between 1 and 9 in each of the 9 rooms.

# You may use one of the two previously created function.

# Then print them such that they appear like this (with [x1,x9] being the 9 random integers):

# {x1,x2,x3,}

# {x4,x5,x6,}

# {x7,x8,x9,}

declare -a arr

for (( i = 0; i < 3; i++ )); do

echo -n "{"

for (( j = 0; j < 3; j++ )); do

arr[$i,$j]=$(GetRandomBounded 0 9)

echo -n "${arr[$i,$j]},"

done

echo "}"

done

# FIXME: Switch

# Create a Switch that takes an integer "a" and return a sentence regarding the value of a

# (Create 3 statements for 3 specific values and a default one)

a=3

case "$a" in

"0")

echo "a is 0"

;;

"1" | "3")

echo "a is 1 or 3"

;;

echo "a is neither 0, 1 nor 3"

;;

esac

# FIXME: logic Gates

# Create 7 functions for each logic gates (And, Or, No, Nand, Nor, Xnor, Xor).

# Each function takes two booleans as parameters and returns the result of the logic gate.

# (or You can do it with a switch and only one function)

And()

{

if [[ $1 == "true" && $2 == "true" ]]; then

echo "true"

else

echo "false"

}

Or()

{

if [[ $1 == "true" || $2 == "true" ]]; then

echo "true"

else

echo "false"

}

No()

{

if [[ $1 == "false" ]]; then

echo "true"

else

echo "false"

}

Nand()

{

if [[ $1 == "true" && $2 == "true" ]]; then

echo "false"

else

echo "true"

}

Nor()

{

if [[ $1 == "false" && $2 == "false" ]]; then

echo "true"

else

echo "false"

}

Xor()

{

if [[ ($1 == "true" && $2 == "false") || ($1 == "false" && $2 == "true") ]]; then

echo "true"

else

echo "false"

}

Xnor()

{

if [[ ($1 == "true" && $2 == "false") || ($1 == "false" && $2 == "true") ]]; then

echo "false"

else

echo "true"

}

LogicGate()

{

case "$2" in

"AND")

echo $(And $1 $3)

;;

"OR")

echo $(Or $1 $3)

;;

"NO")

echo $(No $3)

;;

"NAND")

echo $(And $1 $3)

;;

"NOR")

echo $(Nor $1 $3)

;;

"XOR")

echo $(Xor $1 $3)

;;

"XNOR")

echo $(Xnor $1 $3)

;;

echo "Invalid Door"

;;

esac

}

LogicGate "true" "AND" "true"

# FIXME - Reverse

# Create a function that reverse a string

Reverse()

{

str=$1

stringLength=${#str}

for ((i=$(( $stringLength - 1 )); i>=0; i--)); do

rev="$rev${str:$i:1}"

done

echo $rev

# can be done directly with $(echo $1 | rev), but hey...

}

Reverse "this is a test"