https://www.youtube.com/watch?v=FX_stCPhGHU
ESP8266 is the new WIFI platform for Internet Of Things (IoT). This module is unbelievably cheap & powerful. ESP modules are available from ESP-1 to ESP12 .
May 13
Sending data to Thingspeak server using ESP8266 wifi module (Part-5)
May 13
Importing the Dataset in Spyder IDE for Machine Learning (Part 5)
https://www.youtube.com/watch?v=P9GjtoYbHm0
This video is about importing dataset in Spyder IDE for machine learning. This dataset is a collection of data which are needed to training your machine learning …
May 13
Sending Temperature Data (Using LM35) to ThingSpeak Server using ESP8266 (Part 6)
https://www.youtube.com/watch?v=Zdj8N3izTOU
ESP8266 is the new WIFI platform for Internet Of Things (IoT). This module is unbelievably cheap & powerful. ESP modules are available from ESP-1 to ESP12 .
May 13
Machine Learning Bangla Course 1, Part 3 : Machine Learning Example
https://www.youtube.com/watch?v=AzG4gHvyE0U
What is Machine Learning? Machine learning is a field of computer science that uses statistical techniques to give computer systems the ability to
Apr 16
if-then এর ব্যবহার – শেল প্রোগ্রামিং-এ
#!/bin/sh
#count the number of files in current directory, and check if the number is equal to or greater than or less than 26
#NOF represents number of files
NOF=`ls -l | wc -l`
if [ $NOF -eq 26 ]
then
echo “No of files and directories is equal to 26”
fi
if [ $NOF -gt 26 ]
then
echo “No of files is greater than 26”
fi
if [ $NOF -lt 26 ]
then
echo “No of files is less than 26”
fi
exit
Apr 16
শেল প্রোগ্রামিং while লুপ এর উদাহরণ । একটি চার্ট প্রদর্শন করুন
Example Output
bash-3.2$ ./while-loop-example.sh
Enter your Number
10
10 * 1 = 10
10 * 2 = 20
10 * 3 = 30
10 * 4 = 40
10 * 5 = 50
10 * 6 = 60
10 * 7 = 70
10 * 8 = 80
10 * 9 = 90
10 * 10 = 100
The Code
#!/bin/ksh
#example : how to use while loop in shell programming
multiplication()
{
#clear
i=1
while (( i <= 10 ))
do
echo "$Y * $i = `expr $Y \* $i`"
(( i = i + 1 ))
done
}
echo "Enter your Number"
read X
case "$X" in
1)
Y=1
multiplication
;;
2)
Y=2
multiplication
;;
3)
Y=3
multiplication
;;
4)
Y=4
multiplication
;;
5)
Y=5
multiplication
;;
6)
Y=6
multiplication
;;
7)
Y=7
multiplication
;;
8)
Y=8
multiplication
;;
9)
Y=9
multiplication
;;
10)
Y=10
multiplication
;;
esac
exit
Apr 16
বৃহস্পতিবার এবং শুক্রবারে / etc ফোল্ডারে সমস্ত বিষয়বস্তু /export/home/shell/test/etc.tar তে tar হিসাবে backup করুন
#!/bin/ksh
# on every thursday and friday tar all contents of /etc folder into /export/home/shell/test/. On thursday only create a log file with the list of files
#in the tar file. On thursday untar /export/home/shell/test/etc.tar into vfstab . Then log vfstab exist or not information
DAY=`date +%a`
DATESTAMP=`date +%m-%d-%Y-%H:%M`
if [[ “$DAY” == Mon ]]
then
echo “Today is Monday”
elif [[ “$DAY” == Tue ]]
then
echo “Today is Tuesday”
elif [[ “$DAY” == Wed ]]
then
echo “Today is Wednesday”
elif [[ “$DAY” == Thu ]]
then
echo “Today is Thursday” >> /export/home/shell/test/log/backup-$DATESTAMP.log
cd /etc
tar cvf /export/home/shell/test/etc.tar * >> /export/home/shell/test/log/backup-$DATESTAMP.log
cd /export/home/shell/test
tar xvf etc.tar vfstab
if [[ -f vfstab ]]
then
echo “file vfstab exist” >> /export/home/shell/test/log/backup-$DATESTAMP.log
else
echo “file vfstab does not exist” >> /export/home/shell/test/log/backup-$DATESTAMP.log
fi
elif [[ “$DAY” == Fri ]]
then
echo “Today is Friday”
cd /etc
tar cvf /export/home/shell/test/etc.tar *
elif [[ “$DAY” == Sat ]]
then
echo “Today is Saturday”
else
echo “Today is Sunday”
fi
exit
Apr 16
শেল প্রোগ্রামিং এ if-then-else এর উদাহরণ
#!/bin/sh
#If then else example
#if elif else
NOF=5
if [ $NOF -eq 27 ]
then
echo “No of files and directories = 27”
elif [ $NOF -gt 27 ]
then
echo “No of files are dir are greator than 27”
else
echo “No of files and directories are less than 27”
fi
exit
Apr 16
উদাহরণঃ case এর ব্যবহার। আজকের দিনটির নাম দেখান
bash-3.2$ cat ksh_case_example_1.sh
#!/bin/ksh
#show today’s day name
DAY=`date +%a`
#show value of $DAY
echo $DAY
#based on the value of the DAY variable show the day name in full format
case “$DAY” in
Mon)
echo “Monday”
;;
Tue)
echo “Tuesday”
;;
Wed)
echo “Wednesday”
;;
Thu)
echo “Thursday”
;;
Fri)
echo “Friday”
;;
Sat)
echo “Saturday”
;;
Sun)
echo “Sunday”
;;
esac
—————
Output – ফলাফল
bash-3.2$ ./ksh_case_example_1.sh
Sun
Sunday
