Programmer Group

rise Fedora's kernel is frequently upgraded.But I found that restarting doesn't use the new kernel.I need to check the GRUB configuration file. ydx@ydx-mf:~ $ cat /etc/default/grub #GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" ...

Catalog ifconfig command Show Network Devices Set up network devices ifconfig command Function description: Display or set up network devices usage ifconfig [interface] [up|down] ifconfig interface options | address ... option option Explain -a Displays the status of all interfaces, including information about inactive interf ...

explain: 1.pdf to image by installing php extension imagick realization. 2. Due to a series of problems in Windows Extension installation, it is recommended to develop in linux environment, and windows members can try to install. 3. Install ImageMagick imagick for php for Centos. ImageMagick is a set of software series, mainly used for the crea ...

1, Understanding statefuse 1. Statefuse ensures that pod s retain their identity (container name) and state after rescheduling.2. Statefuse achieves that each pod corresponds to the corresponding PV volume, and each pod can support a set of independent data volumes.3. Provide a stable network identity. Each pod created by a Statefulset has a z ...

nginx forward proxy http/https and proxy mail service Demand background: In the company's Intranet environment, you cannot directly connect to the external network. The intranet service is required to access the Internet through the forward proxy. Installation environment preparation: Nginx itself does not support https protocol request forwa ...

[toc] preface Every time we execute rm commands on the production environment server, we are always on the edge of our pants, because once we accidentally execute the error deletion, we will be ready to run. After all, people are not machines, let alone machines have bug s, hehe. So what if you really delete files that should not be deleted, su ...

1. kubernetes cluster deployment 1.1 kubernetes installation overview To learn kubernetes, first of all, a kubernetes cluster is needed. In order to meet the needs of different scenarios, the community provides different installation methods to meet the needs of various scenarios. Common methods are: MiniKube is a single node installation of ...

Stealing pages from the kernel?Yes, stealing pages means that we bypass all the rules and interfaces assigned to pages and extract a free page directly from the freelist for use. Look directly at the POC. Let me simulate a task_The allocation process for struct: #include <linux/module.h> #include <linux/mm.h> #include <linux/sc ...

In Linux, to judge whether a PID corresponding process exists, you can judge it as follows #! /usr/bin/env python import os def check_pid(pid): try: os.kill(pid,0) except OSError: return False else: return True if __name__ == "__main__": print check_pid(22467) Returns True if the PID exists in the sy ...

tar command Functional description: Back up files Usage: tar [options]...Archive and Compress File Name FILE... Note: The'-'may be omitted from the tar command option option Effect -c Create an archive file in.tar format -C Specify the destination folder when expanding the archive -f Indicates the use of archive files -t List V ...