Dev {Tricks}

You are here: Home / Home

by

WordPress WP-CLI for updating themes and plugins and more

  • Connect to SSH
  • Run the following commands
    • To update WordPress core: 
      wp core update
    • To update one plugin: 
      wp plugin update plugin-name
    • To update all plugins: 
      wp plugin update --all
    • To update one theme: 
      wp theme update theme-name
    • To update all themes: 
      wp theme update --all

For security reasons, it is recommended to keep WordPress, plugins, and themes up to date.

Export the database with WP-CLI

wp db export filename.sql

Import the database with WP-CLI

wp db import filename.sql

by

Windows Apps not Working | Microsoft Apps not Working

How to run the System File Checker (SFC) to check and repair corrupted system files

System File Checker in Windows

 

  • Make sure you’ve installed the latest updates for Windows, and then restart your machine. To find out more, read Update Windows.
  • Run the Command Prompt as Administrator.
  • Then type DISM.exe /Online /Cleanup-image /Restorehealth (note the space before each “/”), and then press Enter.
    (Note: This step may take a few minutes to start and complete.)
  • After you see a message that says “The operation completed successfully,” type sfc /scannow (note the space between “sfc” and “/”) and press Enter.
  • After you see a message that says, “Verification 100% complete,” type exit and press Enter.

 

by

Important Visual Studio Code Extensions

Important Visual Studio Code Extensions

One Dark Pro ()
Atom’s iconic One Dark theme for Visual Studio Code

Material Icon Theme

Live Server

Auto Close Tag

Auto Rename Tag

Bootstrap 5 Quick Snippets

Bracket Pair Color DLW

C/C++ Compile Run

C/C++ Extension Pack

by

Cannot Edit fstab as it is a Read-Only File

  1. How to edit read only fstab?
  2. How to edit /etc/fstab when system boots to read only file system?

Issue

/etc/fstab has been messed up. It is read-only now.

Tried

mount -o remount,rw /

Does not work

Solutions

mount -o remount,rw /dev/sda2 /

Note: Instead of /dev/sda2, use whatever the device is valid for your drive.

by

How to Add Swap Space/file on CentOS 7 and CentOS 8

Before You Begin

check if your CentOS installation already has swap enabled by typing:

swapon –show

Empty output means that your system does not have swap enabled. Otherwise, swap enabled. Note that you may have multiple swap partitions and/or files.

Creating a Swap Partition

Creating a Swap File

 

First, create a file which will be used as swap space 1GB:

fallocate -l 1G /swapfile

If the fallocate utility is not available

sudo dd if=/dev/zero of=/swapfile bs=1024 count=1048576

Ensure that only the root user can read and write the swap file

chmod 600 /swapfile

Next, set up a Linux swap area on the file:

mkswap /swapfile

Run the following command to activate the swap:

swapon /swapfile

Make the change permanent by opening the /etc/fstab file:

vi /etc/fstab

and pasting the following line:

/swapfile swap swap defaults 0 0

Verify that the swap is active

swapon –show

or

free -h

Adjusting the Swappiness Value

Swappiness can have a value between 0 and 100. A low value will make the kernel to try to avoid swapping

cat /proc/sys/vm/swappiness

To set the swappiness value to 10

sysctl vm.swappiness=10

To make this parameter persistent across reboots append the following line to the /etc/sysctl.conf file:

vm.swappiness=10

Removing a Swap File #

Start by deactivating the swap space by typing:

sudo swapoff -v /swapfile

Next, remove the swap file entry /swapfile swap swap defaults 0 0 from the /etc/fstab file.

Finally, delete the actual swapfile file with rm :

sudo rm /swapfile