Volodymyr.savchenko

.gitignore

@@ -51,3 +51,8 @@ modules.order
 Module.symvers
 Mkfile.old
 dkms.conf
+
+# vscode settings
+.vscode
+.dist
+

02-Git/Makefile

@@ -0,0 +1,17 @@
+CC=g++
+CFLAGS=-c -Wall 
+LDFLAGS=
+SOURCES=$(wildcard *.cpp)
+OBJECTS=$(SOURCES:.cpp=.o)
+EXECUTABLE=cool_game
+
+all: $(SOURCES) $(EXECUTABLE)
+
+$(EXECUTABLE): $(OBJECTS) 
+	$(CC) $(LDFLAGS) $(OBJECTS) -o $@
+
+.cpp.o:
+	$(CC) $(CFLAGS) $< -o $@
+
+clean:
+	rm -f $(EXECUTABLE) *.o

02-Git/rock_paper_scissors.cpp

@@ -0,0 +1,27 @@
+#include <iostream>
+#include <cstring>
+
+using namespace std;
+int main()
+{
+	const char* human_choices[] = {"paper", "quit", "rock", "scissors"};
+	const char* ai_choices[] = {"scissors", "quit", "paper", "rock"};
+	const int dist_to_p = 112;
+	do {
+		char human_choice = '\0';
+		int8_t index= 0;
+		do {
+			cout << "Please choose: rock (r) - paper (p) - scissors (s) or (q)uit for exit" << endl;
+			cin >> human_choice;
+			human_choice = tolower(human_choice);
+			if (human_choice == 'q') {
+				cout << "By, see you later." << endl;
+				return 0;
+			}
+		} while(human_choice !='r' && human_choice !='p' && human_choice !='s' && human_choice!='q');
+		index = human_choice - dist_to_p;
+		cout << "You choose " << human_choices[index] << ", I choose " << ai_choices[index] << endl;
+		cout << "I win: " << ai_choices[index] << " beats " << human_choices[index] << endl;
+	} while(true);
+	return 0;
+}

03-bash/task1.sh

@@ -0,0 +1,179 @@
+#!/bin/bash
+# Version 1.0.0
+
+# print help information on to a screen
+help_usage() {
+	echo "Usage ./task1.sh [-h|--help] [-n num] [file] "
+	echo "-h, --help - number of resulting file"
+	echo "-n         - number of files with hardware info"
+	echo "file       - file name with obtained hardware info"
+	echo "For example, ./task1.sh -n 9 ./test/info/info.txt"
+}
+
+# check and create work directory
+chk_work_dir() {
+	if ! [ -d "$1" ]; then
+		mkdir -p $1
+		if ! [ -d "$1" ]; then
+			echo >&2 "Error, working directory $1 was not created. Exit with error."
+			exit 1
+		fi
+	fi
+	if ! [ -f "$1/.value" ]; then
+		echo 0 >"$1/.value"
+	fi
+}
+
+# rename file
+rename_file() {
+	# файл-yyyymmdd-nnnn
+	if [ -f "$1" ]; then
+		mv "$1" "$1_$(date +%Y%m%d)_$2"
+	fi
+}
+
+chk_is_number() {
+	local re="^[1-9][0-9]{0,}$"
+	if [ "$1" =~ $re ]; then
+		return 0
+	else
+		return 1
+	fi
+}
+
+parse_number() {
+	local m_number=$2
+	if chk_is_number $1 -eq 0; then
+		eval $m_number=$1
+	fi
+}
+
+parse_file_name() {
+	local m_filename=$2
+	local m_dirname=$3
+	if ! [ -z "$1" ]; then
+		eval $m_filename=$(basename $1)
+		eval $m_dirname=$(dirname $1)
+	fi
+}
+
+inc_value_in_file() {
+	local cnt=0
+	if [ -f "$1" ]; then
+		read cnt <$1
+		# echo "debug: in file stored: $COUNTER"
+		echo $((cnt + 1)) >$1
+	fi
+}
+
+get_current_value() {
+	if [ -f "$1" ]; then
+		read $2 <$1
+		inc_value_in_file $1
+	fi
+	# echo "debug: get_current_value:: COUNTER: ${!2}"
+	return 0
+}
+
+remove_files() {
+	# $1 - dir
+	# $2 - cnt
+	if [ -d "$1" -a "$2" -gt 0 ]; then
+		cd $1
+		local cnt=$(ls $1 | wc -l)
+		cnt=$( (cnt - $2) )
+		cnt=${cnt#-}
+		echo "cnt >> $cnt"
+		ls $1 | sort -r | tail -$cnt | xargs rm
+	fi
+}
+
+make_info_file() {
+	local info_file=$1
+	local m_date=$(date)
+	echo "Date: $m_date" >$info_file
+	echo "---- Hardware ----" >>$info_file
+	local m_proc=$(cat /proc/cpuinfo | grep 'model name' | tail -n 1 | cut -d':' -f2- | xargs)
+	echo "CPU: \"$m_proc\"" >>$info_file
+	# local m_proc=$(sudo dmidecode -t processor | grep Version |  cut -d':' -f2- | xargs)
+	local m_mem=$(cat /proc/meminfo | grep 'MemTotal:' | cut -d':' -f2 | xargs | cut -d' ' -f1)
+	m_mem=$(( $m_mem / 1024 ))
+	echo "RAM: $m_mem MB" >>$info_file
+	local m_pr_name=$(sudo dmidecode -t baseboard | grep 'Product Name' | cut -d':' -f2- | xargs)
+	local m_pr_mb=$(sudo dmidecode -t baseboard | grep 'Manufacturer' | cut -d':' -f2- | xargs)
+	echo "Motherboard: $m_pr_mb, \"$m_pr_name\"" >>$info_file
+	local m_serial=$(sudo dmidecode -t2 | grep 'Serial Number' | cut -d':' -f2 | xargs)
+	echo "System Serial Number: $m_serial" >>$info_file
+	echo "---- System ----" >>$info_file
+	local m_release=$(lsb_release -d | cut -d':' -f2- | xargs)
+	echo "OS Distribution: \"$m_release\"" >>$info_file
+	local m_kernel=$(uname -v | awk '{print $4}')
+	echo "Kernel version: $m_kernel" >>$info_file
+	local m_install_date=$(/bin/ls -lGct /etc | tail -1 | awk '{print $5, $6, $7}')
+	echo "Installation date: $m_install_date" >>$info_file
+	local m_host=$(hostname)
+	echo "Hostname: $m_host" >>$info_file
+	local m_uptime=$(uptime | awk '{print $3}' | cut -d',' -f1)
+	echo "Uptime: $m_uptime" >>$info_file
+	local m_proc_cnt=$(ps aux | wc -l)
+	echo "Processes running: $m_proc_cnt" >>$info_file
+	local m_user_cnt=$(who -u | wc -l) # not work in debian 686?
+	echo "User logged in: $m_user_cnt" >>$info_file
+	echo "---- Network ----" >>$info_file
+	local m_ifaces=$(ip addr show | grep "inet\b" | awk '{print $(NF) ": " $2}')
+	echo "$m_ifaces" >>$info_file
+	echo '----"EOF"----' >>$info_file
+}
+
+# variables
+RES_DIR="$HOME/bash"
+RES_FILE="$RES_DIR/task1.out"
+
+COUNTER=0
+U_NUMBER=0
+U_FILENAME=""
+U_DIRNAME=""
+
+while [ "$1" != "" ]; do
+	case $1 in
+		-h | --help)
+			help_usage
+			exit 0
+			;;
+		-n)
+			parse_number $2 U_NUMBER
+			shift
+			;;
+		-* | --*)
+			echo "Error, a parameter is wrong!"
+			help_usage
+			exit 0
+			;;
+		*)
+			parse_file_name $1 U_FILENAME U_DIRNAME
+			break
+			;;
+	esac
+	shift
+done
+
+if ! [ -z "$U_FILENAME" ]; then
+	RES_FILE=$U_DIRNAME/$U_FILENAME
+	RES_DIR=$U_DIRNAME
+fi
+
+COUNTER_FILE="$RES_DIR/.value"
+
+chk_work_dir $RES_DIR
+
+get_current_value "$RES_DIR/.value" COUNTER
+
+rename_file $RES_FILE $(printf "%04d" $COUNTER)
+
+make_info_file $RES_FILE
+
+remove_files $RES_DIR $U_NUMBER
+
+echo "The file \"$RES_FILE\" was created. Done."
+
+exit 0

03-bash/task2.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+help_usage() {
+	echo "Usage ./task2.sh [-h|--help] [file] "
+	echo "-h, --help - number of resulting file"
+	echo "file       - file name with obtained hardware info"
+	echo "For example, ./task2.sh ./test/info/task1.sh"
+}
+
+chk_work_dir() {
+	if ! [ -d "$1" ]; then
+		mkdir -p $1
+		if ! [ -d "$1" ]; then
+			echo >&2 "Error, working directory $1 was not created. Exit  with error."
+			exit 1
+		fi
+	fi
+}
+
+INSTALL_DIR="/usr/local/bin"
+INSTALL_FILE="task1.sh"
+
+if [ -z "$1" ]; then
+	INSTALL_FILE=$1
+fi
+
+chk_work_dir $INSTALL_DIR
+
+cp $INSTALL_FILE $INSTALL_DIR
+
+chmod u+s $INSTALL_DIR/$INSTALL_FILE
+
+chmod 755 $INSTALL_DIR/$INSTALL_FILE
+
+exit 0

03-make/make_soup/Makefile

@@ -0,0 +1,88 @@
+#!/usr/bin/make -f 
+
+# Author: Volodymyr Savchenko [email protected]
+
+KITCHEN        = Kitchen
+TABLE          = $(KITCHEN)/Table
+STAVE          = $(KITCHEN)/Stave
+CUPBOARD       = $(KITCHEN)/Cupboard
+POTS           = $(CUPBOARD)/Pots
+REFRIGERATOR   = $(CUPBOARD)/Refrigerator
+SCRIPTS        = Scripts
+CHK_DIR_SCRIPT = $(SCRIPTS)/chk_dir.sh
+POT_SIZE_DEF   = medium
+POT_SIZE       = $(POT_SIZE_DEF) # set pot size
+POTS_PATTERN   = small medium big
+VEGS_PATTERN   = potato carrot onion
+
+#.ONESHELL: pots
+
+all: soup
+
+soup: cooking clean_table #  water meat potato pasta carrot onion salt spice
+	@mv $(STAVE)/$(strip $(POT_SIZE))_pot.txt $(TABLE)/soup.txt
+	$(info Soup in the $(TABLE)/[email protected].)
+
+clean_table:
+	@if [ -d $(TABLE) ] ; then rm -rf $(TABLE)/*  ; fi
+
+cooking: receipe.txt get_water put_pot_on_stave add_meat add_vegies add_salt_and_spices
+	$(info Lets cook a soup! Receipe in $(TABLE)/$<.)
+
+
+receipe.txt: kitchen
+	@echo "Put the pot on the stave." >> $(TABLE)/$@
+	@echo "Turn on the stave." >> $(TABLE)/$@
+	@echo "Cook for 45-60 minutes." >> $(TABLE)/$@
+	@echo "Put vegies. Cook for 20-25 minutes" >> $(TABLE)/$@
+	@echo "Add salt and spices." >> $(TABLE)/$@
+	@echo "Cook for 5 minutes." >> $(TABLE)/$@
+	@echo "Turn off the stave." >> $(TABLE)/$@
+
+add_salt_and_spices: kitchen pots get_pot
+	@echo "Salt and spices." >> $(TABLE)/$(strip $(POT_SIZE))_pot.txt
+
+put_pot_on_stave: kitchen pots get_pot
+	@mv $(TABLE)/$(strip $(POT_SIZE))_pot.txt $(STAVE)
+
+add_vegies: kitchen pots get_meat get_vegies
+	@echo "Potato, carrot and onion " >> $(STAVE)/$(strip $(POT_SIZE))_pot.txt
+
+add_meat: kitchen pots get_meat 
+	@echo "Meat, 1/2 kg" >> $(STAVE)/$(strip $(POT_SIZE))_pot.txt
+
+get_water: kitchen pots
+	@echo "Cold water, 3/4 of the pot volume" >> $(TABLE)/$(strip $(POT_SIZE))_pot.txt
+
+get_vegies: kitchen
+	@$(foreach  v,  $(VEGS_PATTERN), $(shell touch $(TABLE)/$(v).txt ) )
+
+get_pot: kitchen pots 
+	@mv $(POTS)/$(strip $(POT_SIZE))_pot.txt $(TABLE)
+
+get_meat: meat.txt
+	@if [ -f $(REFRIGERATOR)/meat.txt ] ; then mv $(REFRIGERATOR)/meat.txt $(TABLE) ; fi
+
+pots: kitchen
+	@if ! [ -f  $(POTS)/$(strip $(POT_SIZE))_pot.txt ] ; then touch $(POTS)/$(strip $(POT_SIZE))_pot.txt ; fi
+	@$(foreach p, $(POTS_PATTERN), $(shell touch $(POTS)/$(p)_pot.txt) )
+
+meat.txt: kitchen
+	@touch $(REFRIGERATOR)/$@
+
+kitchen: 
+	@$(CHK_DIR_SCRIPT) $(KITCHEN)
+	@$(CHK_DIR_SCRIPT) $(CUPBOARD)
+	@$(CHK_DIR_SCRIPT) $(TABLE)
+	@$(CHK_DIR_SCRIPT) $(POTS)
+	@$(CHK_DIR_SCRIPT) $(STAVE)
+	@$(CHK_DIR_SCRIPT) $(REFRIGERATOR)
+
+
+.PHONY: clean
+
+clean:
+	rm -rf $(KITCHEN)
+
+
+

03-make/make_soup/Scripts/chk_dir.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+# echo ">>>>>>>>>> dir >>>>>>>>>>> $1"
+if ! [ -d $1 ]; then 
+	mkdir -p $1
+fi

04-KernelModule/Makefile

@@ -0,0 +1,14 @@
+obj-m+=mymodule.o
+
+all:
+	make -C /lib/modules/$(shell uname -r)/build/ M=$(PWD) modules
+
+clean:
+	make -C /lib/modules/$(shell uname -r)/build/ M=$(PWD) modules
+
+# obj-m+=mymodule.o
+
+# all:
+# 	make -C $(BUILD_KERNEL) M=$(PWD) modules
+# clean:	
+# 	make -C $(BUILD_KERNEL) M=$(PWD) clean