Linux file rename
To change the character(s) in the file name at the folder: for file in *; do mv “$file” echo $file | tr ‘ ‘ ‘_’ …
Restart ttyUSB* on Linux
The below seems to solve problem, but not always. Find the driver associated to your ttyUSBx device. [email protected]:/# sudo cat /proc/tty/drivers /dev/tty /dev/tty 5 0 …
Serial port on Linux ttyUSBx
Set the baud speed: stty -F /dev/ttyUSB0 9600 Get the port info: stty < /dev/ttyUSB0 Use the stty command to set the parameters of your …
PostgreSQL – Password authentication failed for user “postgres”
When logging into PostgreSQL, an error message may appear like this: Password authentication failed for user “postgres”. When PostgreSQL installs on Linux, by default no …
PostgreSQL – Allow Remote Connection to Connect Database
When a client machine tried to connect the PostgreSQL Server, it got an error like “psql:could not connect to server:Connection refused”.If you need to the …
Raspberry Pi 4 GPIO Pinout
The best thing about any Raspberry Pi, including the new Raspberry Pi 4, is that you can use it to build all kinds of awesome …
Linux file permissions
The UNIX and Linux stores a set of permissions with every file.These permissions help to keep data secure on a multiuser operating systems by restricting: …
Activate &SAP_EDIT in SE16N
The function code &SAP_EDIT, which enables the change mode of transaction SE16N, is deactivated due to security breaches that were detected. In order to activate …
SAP Router Certificate Renewal
Login to SAP Router Server and stop Router service. Take a backup of file in usr/sap/saprouter : Cred_v2, srcert, certreq, local.pseAlso you can take a …