Important wkhtmltopdf is deprecated and shouldn't be used anymore. Please consider switching to another tool We can install wkhtmltopdf...

There are different kind of memory measurement metrics in Linux. These are the differences: Code Name Description vsz virtual memory...

For some reason you have to pass the password hash if you want to create a role in postgres. To...

If you want to check the configuration of a running JVM process you can use jcmd. List the running processes...

Getting the whole bucket size aws s3 ls s3://$BUCKETNAME/ --recursive --human-readable --summarize | tail -n2 Tail is used because...

on the bash (issued as postgres user) Start/Stop/Restart PostgreSQL pg_ctl -D $configdir start|stop|restart Start/Stop/Restart the corresponding PostgreSQL...

Create htpasswd entry and print to stdout: $ sudo apt install apache2-utils # Optional $ htpasswd -n $USERNAME New password:

Investigate why mails are frozen The exim documentation says: Freezing occurs when a bounce message encounters a permanent failure because...