Renames all the files in the current folder based on the Exif date of that image. You’ll need the ‘jhead’ command tool – use apt-get to install it.
for i in *; do mv i "(jhead i | grep date | sed 's/^File date[^:]\+: \(.\+\):\(.\+\):\(.\+\) .*/\1-\2-\3/') $i"; done
Gets data from a MySql database, splits the data into separate columns, then uses one column in a URL to download something – and uses other column to name the file thats downloaded
for i in (mysql -u root Project_Madapp -sNe 'SELECT CONCAT(id,",",name) AS yo FROM City WHERE type="actual"'); do parts=({i//,/ }); wget -O "{parts[1]}.csv" "http://localhost/student_allocation_csv.php?format=csv&city_id={parts[0]}"; done
Get the intro paragraph of any wikipedia article using this trick…
dig +short txt "<keyword>".wp.dg.cxEncrypt/Decript files in linux
#Encypt...
gpg -c <Source File>
#Decrypt...
gpg <Encrypted File>
Compress the big image files
for i in (find . -size +1M); do convert -resize 40% -quality 80i $i; done
This is how you iterate thru a text file outputting a line at a time in Bash shell scripting.
IFS='\n'; for i in(cat FILE.TXT); do echo "$i"; done
Convert RAW files to JPEG in batch. Convert all files in a folder using a command. For this to work, first you must have ‘ufraw’ package installed. sudo apt-get install ufraw or sudo yum install ufraw depending on your OS.
find . -type f -name "*.CR2" -exec ufraw-batch --out-type=jpeg '{}' \;
This command will send a line from a given text file one every 10 mins as an SMS to a given number.
i=1; while [ 1 ]; do sms INSERT_PHONE_NUMBER "(cat "/home/binnyva/sms.txt"|head -ni|tail -n1)"; sleep 10m; i=(expri + 1); done
Script calls the command ‘sms’ – you can define that command however you want. In my case, its a variation of this script.
Command to send a text to any phone once every 15 mins.
while [ 1 ]; do sms NUMBER_GOES_HERE "$(date '+%I:%M %p') Hey Anju. Still awake?"; sleep 15m; done
Script calls the command ‘sms’ – you can define that command however you want. In my case, its a variation of this script.
Command to generate a random password…
openssl rand -base64 6