Find out the number of CPU cores on Linux
How to find out the number of CPU cores on a Linux host.
Use the command nproc.
$ nproc
nproc – print the number of processing units available: man page of nproc.
How to find out the number of CPU cores on a Linux host.
Use the command nproc.
$ nproc
nproc – print the number of processing units available: man page of nproc.
I recently changes the media aspects. The problem is that the existing thumbnails are not changed to the new aspects. How to make WordPress regenerate the thumbnails after I changing the media aspects? The “Regenerate Thumbnails” works like a charm for me: https://wordpress.org/plugins/regenerate-thumbnails/ . It allows you to regenerate your thumbnails after changing the thumbnail…
What is the design of Snapshots in HDFS? This PDF documents the design of snapshot. Jing Zhao and Tsz-Wo Sze from Hortonworks gave a great talk on the design of HDFS snapshots. The slides can be downloaded at here. The development of snapshot is tracked by HDFS-2802. Read more: How to set the replication factor…
How to get the running process’ pid in Python? In Python, you can get the pid of the current process by import os os.getpid() From the official doc: os.getpid() Return the current process id. One example os using os.getpid() to get process own ID: $ python3 Python 3.8.10 (default, Jun 22 2022, 20:18:18) [GCC 9.4.0]…
In a Python script, how to get the full path and directory of the Python script itself? To get the path of the current file (the script itself), you can use __file__. To resolve any symbolic links in the path, you can use os.path.realpath(). Putting them together, you can do os.path.realpath(__file__) to get the full…
How to export a work file to PDF in Office 2007? 2007 Microsoft Office Add-in: Microsoft Save as PDF or XPS: http://www.microsoft.com/en-us/download/details.aspx?id=7 This download allows you to export and save to the PDF and XPS formats in eight 2007 Microsoft Office programs. It also allows you to send as e-mail attachment in the PDF and XPS…
In Perl, how to get the epoch timestamp, the number of seconds passed since the epoch? In Perl, to get the epoch time, call the time function: my $ts = time Example: $ perl -e ‘print time . “n”‘ 1491473202 Read more: How to get the epoch timestamp in Python? How to get the epoch…