Mpu6050_part2

02-Git/README.md

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+# Homework:
+
+Create a rock-paper-scissors console game
+(rules https://en.wikipedia.org/wiki/Rock%E2%80%93paper%E2%80%93scissors)
+
+The game should be simple, the goal is to create a git project with proper commit order and structure. E.g.:
+
+```
+> Please choose: rock (r) - paper (p) - scissors (s)
+> r
+> You choose rock, I choose paper
+> I win: paper beats rock
+```

02-Git/main.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int main() {
+
+    char human_val = 0, computer_val = 0;
+    time_t t;
+    const char str [3][10] = {"rock\n", "paper\n", "scissors\n"};
+    const char symbols[3] = {'r', 'p', 's'};
+
+    printf("rock-r, paper-p, scissors-s. Make your choose: \n");
+
+    // read value from keyboard
+    while ((human_val != 'r')
+            && (human_val != 'p')
+            && (human_val != 's')) {
+        human_val = getchar();
+    }
+
+    // generate random value for computer
+    srand((unsigned) time(&t));
+    int index = rand() % 3;
+    computer_val = symbols[index];
+
+    printf("Computer: %s", str[index]);
+
+    // comaring values and detection of winer
+    if (computer_val == human_val) {
+        printf("Nobody wins\n");
+    }
+    else if (((computer_val == 'r') && (human_val == 'p')) ||
+             ((computer_val == 'p') && (human_val == 's')) ||
+             ((computer_val == 's') && (human_val == 'r'))) {
+        printf("Human wins\n");
+    }
+    else {
+        printf("Computer wins\n");
+    }
+
+    return 0;
+
+}

02-Git/makefile

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+CC = gcc
+
+CFLAGS  = -g -Wall
+
+TARGET = game_rsp
+
+all: $(TARGET)
+
+$(TARGET): main.c
+	$(CC) $(CFLAGS) -o $(TARGET) main.c
+clean:
+	$(RM) $(TARGET) *.o

03-Bash/README.md

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+# Homework Bash:
+
+Create the scripts according to the tasks in subfolders.
+Provide separate pull requests for each task.

03-Bash/find_dup_files/README.md

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+# Homework Bash 2:
+
+Create the script 'find_dup_files.sh'
+
+First script parameter is the folder for searching.
+In case of its absence the current folder should be used instead of it.
+Print file names and file size for files with same md5 checksum.
+
+Script should support command-line options:
+  -h, --help - print program description and these options.
+
+Tips:
+* use find utility for get list of files names
+* use md5sum utility for checksum

03-Bash/find_dup_files/find_dup_files.sh

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+#!/bin/bash
+
+display_help() {
+  echo "Usage: $0 [target directory]"
+  echo
+  echo "    -h, --help - print these options"
+  echo
+}
+
+declare DYR_PATH
+
+if [ "$#" -eq 0 ]; then
+  DYR_PATH="."
+else
+  if [ "$1" = "--h" ] || [ "$1" = "--help" ]; then
+    display_help
+    exit 1
+  else
+    DYR_PATH="$1"
+  fi
+fi
+
+for pfile in $(find $DYR_PATH -type f -name "*");
+do
+  echo $pfile -
+  MDSUM=($(md5sum $pfile))
+  if [ ! -z "$MDSUM" ]; then
+    for sfile in $(find $DYR_PATH -type f -exec md5sum {} + | grep "^$MDSUM");
+    do
+      if [ $sfile != $pfile ] && [ -f "$sfile" ]; then
+        echo $MDSUM :
+        echo size of $sfile \file is $(stat -c%s "$sfile")
+      fi
+    done
+  fi
+done
+
+echo
+echo name of executed script:
+echo $0

03-Bash/fix_owner/README.md

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+# Homework Bash 1:
+
+Create the script 'fix_owner.sh'
+
+For every user in system with id >= 1000 check home folder.
+In case of inequality of user's id and file/dir/link owner's id 
+ask for fixing it.
+Do the same for default user's group file/dir/link group id.
+Script should support command-line options:
+  -f, --force - fix without acknowledgement,
+  -h, --help - print these options.
+
+Tips:
+* use user's list from /etc/passwd
+* for folder traversal use find utility
+* for get users and group ids from line delimeted by : use cut -d\:

03-Bash/fix_owner/kernel_hm.sh

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+#!/bin/bash
+
+display_help() {
+  echo
+  echo "Usage: $0 [target directory]"
+  echo
+  echo "    -f, --force - fix without asknowledgement"
+  echo "    -h, --help - print these options"
+  echo
+  echo
+}
+
+ask_user_yes_no() {
+
+  read -p "Would you like to change owner? y/n " -n 1 -r
+  echo
+  if [[ $REPLY =~ ^[Yy]$ ]]
+  then
+    return 0
+  fi
+  return 1;
+}
+
+if [ "$1" = "--help" ] || [ "$1" = "--h" ]; then
+  display_help
+  exit 1
+fi
+
+# For every user in system with id >= 1000 check home folder.
+# In case of inequality of user's id and file/dir/link owner's id
+local_users=($( awk -F: '($3 >= 1000) {printf "%s\n",$1}' /etc/passwd))
+
+for local_user in $(awk -F: '($3 >= 1000) {printf "%s\n",$1}' /etc/passwd);
+do
+  echo $local_user
+  user_path=$(grep $local_user /etc/passwd|cut -f6 -d":")
+
+  if [ -d "$user_path" ]; then
+    echo "$user_path direcroty is present"
+
+    USERID=$(grep $local_user /etc/passwd|cut -f3 -d":")
+    echo Userid is $USERID
+
+    for cur_file in $(find "${user_path}" -name '*.*');
+    do
+      # get user and group id of owner
+      OWENER_USERID=$(stat -c '%u' $cur_file)
+      OWENER_GROUPID=$(stat -c '%g' $cur_file)
+
+      if [ -z "$OWENER_USERID" ] || [ -z "$OWENER_GROUPID" ] || [ $USERID != $OWENER_USERID ] || [ $USERID != $OWENER_GROUPID ]; then
+        echo Mismatch between User/Group ID and real Owner User ID
+        echo Real Owner Userid is $OWENER_USERID
+        echo Real Owner UserGroupid is $OWENER_GROUPID
+        if [ "$1" = "-f" ] || [ "$1" = "--force" ] || ask_user_yes_no; then
+          chown -R $USERID:$USERID $cur_file
+          echo permission \for $cur_file \file  changed
+        fi
+      fi
+    done
+  else
+    echo "$user_path direcroty is not present"
+  fi
+done
+
+echo
+echo name of executed script:
+echo $0

03-Bash/kernel_git/README.md

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+# Homework Bash 3:
+
+Create the script 'kernel_stats.sh'
+
+Download mainline Linux repo from [email protected]:torvalds/linux.git
+
+Print the quantity of files with extention .c, .cpp and *.py.
+
+Find the quantity of commits with word 'revert' in commit name.
+
+How many lines for each author are in *.py files.
+
+Tips:
+    Use 'git blame' for getting info about source.
+    Use HEAD of master branch.

03-Bash/kernel_git/kernel_hm.sh

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+#!/bin/sh
+
+display_help() {
+  echo "Usage: $0 [target directory]"
+  echo
+}
+
+if [ "$#" -ne 1 ] || [ "$1" = "--h" ] || [ "$1" = "--help" ]; then
+  display_help
+  exit 1
+fi
+
+if [ ! -d "$1" ]; then
+  echo target directory does not exists
+  exit 1
+fi
+
+cd $1
+
+# Print the quantity of files with extention .c, .cpp and *.py.
+echo Quantity of files with extention .c in target diretory:
+ls -lR | grep --count \.c$
+echo Quantity of files with extention .cpp in target diretory:
+ls -lR | grep --count \.cpp$
+echo Quantity of files with extention .py in target diretory:
+ls -lR | grep --count \.py$
+
+# Find the quantity of commits with word 'revert' in commit name.
+echo
+echo Quantity of commits with word \'revert\'
+git rev-list HEAD --count --grep='revert'
+
+# How many lines for each author are in all *.py files in summury.
+find -name "*.py" -exec \
+git blame --line-porcelain {} \; | sed -n 's/^author //p' | sort | uniq -c | sort -rn
+
+echo
+echo name of executed script:
+echo $0

03-Make/Cooking/Makefile

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+#!/usr/bin/make -f
+
+PATHMARKET=food-market
+PATHPOT=kitchen/table/pot/
+PATHFPAN=kitchen/table/fpan/
+
+SOURCE += salt.txt
+SOURCE += chicken.txt
+SOURCE += onion.txt
+SOURCE += potato.txt
+SOURCE += oil.txt
+SOURCE += greenpeas.txt
+SOURCE += carrot.txt
+
+FOOD = $(addprefix $(PATHMARKET)/, $(SOURCE))
+
+receipt_ready.txt: buy_food add_frying
+	./ready.sh
+
+add_frying: add_greenpeas frying ${PATHPOT}
+	echo "Put the frying to the pot and boil 3 min" \
+	> ${PATHPOT}add_frying.txt
+
+add_greenpeas: add_potato ${PATHPOT}
+	echo "Put 100 g of the $$(cat kitchen/table/greenpeas.txt)" \
+	" to the pot and boil 3 min" > ${PATHPOT}add_greenpeas.txt
+
+add_potato: add_salt ${PATHPOT}
+	echo "Peel 50 g of the $$(cat kitchen/table/potato.txt),"\
+	" cut it, put to the pot"\
+	" and boil 20-30 min" > ${PATHPOT}add_potato.txt
+
+frying: add_carrot add_onion add_oil ${PATHFPAN}
+	cat ${PATHFPAN}add_oil.txt > ${PATHFPAN}frying.txt
+	cat ${PATHFPAN}add_onion.txt >> ${PATHFPAN}frying.txt
+	cat ${PATHFPAN}add_carrot.txt >> ${PATHFPAN}frying.txt
+
+add_carrot: add_onion ${PATHFPAN}
+	echo "Chop one $$(cat kitchen/table/carrot.txt),"\
+	" put it to the frying pan and fry it" > \
+	${PATHFPAN}add_carrot.txt
+
+add_onion: add_oil ${PATHFPAN}
+	echo "Cut 1-2 st. of the $$(cat kitchen/table/onion.txt),"\
+	" put it to the frying pan and fry it" \
+	> ${PATHFPAN}add_onion.txt
+
+add_oil: buy_food ${PATHFPAN}
+	echo "Put 50 g of the $$(cat kitchen/table/oil.txt)" \
+	" to the hot frying pan" > ${PATHFPAN}add_oil.txt
+
+add_salt: add_chicken ${PATHPOT}
+	echo "Put the $$(cat kitchen/table/salt.txt) to the pot and mix it" > \
+	${PATHPOT}add_salt.txt
+
+add_chicken: add_water ${PATHPOT}
+	echo "Put 500 g of the $$(cat kitchen/table/chicken.txt) to the pot" \
+	" and boil 60 min" > ${PATHPOT}add_chicken.txt
+
+add_water: buy_food ${PATHPOT}
+	./get_water_from_faucet.sh 2000 kitchen/table/pot/add_water.txt
+
+buy_food: create_res $(FOOD)
+	./buy_food_from_market.sh kitchen/table/receipt.txt
+
+create_res:
+	./create_res.sh ${PATHMARKET} kitchen/faucet/
+
+.PHONY: clean
+
+clean:
+	find -type f -name "*.txt" -delete

03-Make/Cooking/buy_food_from_market.sh

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+#!/bin/bash
+
+# by foods in the market
+
+CHIKEN=$(cat food-market/chicken.txt)
+POTATO=$(cat food-market/potato.txt)
+SALT=$(cat food-market/salt.txt)
+ONION=$(cat food-market/onion.txt)
+CARROT=$(cat food-market/carrot.txt)
+OIL=$(cat food-market/oil.txt)
+GREENPEAS=$(cat food-market/greenpeas.txt)
+
+echo "Buy $CHIKEN, $POTATO, $CARROT, $SALT, $ONION, $OIL, $GREENPEAS" \
+"in the food market" > $1
+
+cp food-market/chicken.txt kitchen/table/
+cp food-market/potato.txt kitchen/table/
+cp food-market/carrot.txt kitchen/table/
+cp food-market/onion.txt kitchen/table/
+cp food-market/salt.txt kitchen/table/
+cp food-market/oil.txt kitchen/table/
+cp food-market/greenpeas.txt kitchen/table/
+
+
+

03-Make/Cooking/create_res.sh

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+#!/bin/bash
+
+
+mkdir -p food-market
+mkdir -p kitchen
+mkdir -p kitchen/table
+mkdir -p kitchen/faucet
+mkdir -p kitchen/table/fpan
+mkdir -p kitchen/table/pot
+echo "carrot" > ${1}/carrot.txt
+echo "chicken" > ${1}/chicken.txt
+echo "greenpeas" > ${1}/greenpeas.txt
+echo "oil" > ${1}/oil.txt
+echo "onion" > ${1}/onion.txt
+echo "potato" > ${1}/potato.txt
+echo "salt" > ${1}/salt.txt
+echo "water" > ${2}/water.txt

03-Make/Cooking/get_water_from_faucet.sh

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+#!/bin/bash
+
+WATER=$(cat kitchen/faucet/water.txt)
+echo "Put of $1 ml of $WATER to the pot" > $2
+