Sometimes It Is The Obvious

This was one of those “problems” that nagged me for many hours until the obvious dawned on me. I wrote a python script to grab the temperature and humidity from a DHT22 sensor and then write the output with the proper syntax to send to my monitoring program [xymon]. The wrapper bash script ran every 5 minutes and used a redirection to write out a file ie:

*/5 * * * * /usr/local/bin/temphum.sh >/tmp/temphum.dat

The wrapper script grabs output and sends it to the server. Having this wrapper script lets me run the python script independently for testing or for curiosity.

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shell/bash uppercase arguments

To make a long story short… #!/bin/bash PATTERN=$(echo $1 | tr [:lower:] [:upper:]) # or PATTERN=$(echo $1 | tr [a-z] [A-Z]) # or PATTERN=$(echo $1 | awk ‘{print toupper($0)}') echo "Your $1 argument is now uppercase: $1" To make a short story long… Just to let you know a little more about me and reveal a few more shells tricks along the way. I am a very conservative investor - always have been but the low interest rates over the recent past has forced me to try a squeeze a little more out of the stock market also known as a “a gentleman’s gambling parlor of greedy people”. »