The purpose of this blog

The purpose of this blog is to post fixes for common linux or unix command line problems including the command line on Mac OS X.

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Pause a program which is using too much CPU

Sometimes your battery is running low and you need to pause a program without quitting it or force-quitting it, so that you can preserve battery but not lose the job that the program is doing. To do this,  Step 1. open a terminal Step 2. type:  ps ax | grep -i  "<program name>" so for example, if it's photoshop you need to pause, replace "<program name>" with "photoshop" Step 3. Next to the results on the far left you'll see a number, usually with 5 digits. E.g. 12345. Step 4. Type:  kill -STOP 12345 where 12345 are the numbers obtained in Step 2-3. Step 5. When you want to resume the program, type kill -CONT 12345 It should then continue to operate or run as usual without problems.
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Enable Anydesk on Linux

 By default, Anydesk doesn't work on Ubuntu as it uses a different display server than what is expected by Anydesk (it expects the traditional X11 rather than Wayland). Dump this into a file, say, "fix_anydesk.sh", and then run it with sudo bash fix_anydesk.sh The script: #!/bin/bash # Check if the user has root privileges if [[ $EUID -ne 0 ]]; then    echo "This script must be run as root"     exit 1 fi # Backup the GDM configuration file GDM_CONFIG="/etc/gdm3/custom.conf" if [[ -f "$GDM_CONFIG" ]]; then     cp "$GDM_CONFIG" "$GDM_CONFIG.bak"     echo "Backup of custom.conf created." else     echo "GDM configuration file not found."     exit 1 fi # Disable Wayland by uncommenting and setting the 'WaylandEnable' option to false sed -i 's/#WaylandEnable=false/WaylandEnable=false/' "$GDM_CONFIG" # Inform the user echo "Wayland has been disabled. The system will use X11 inste...
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throttle traffic on apache

sudo apt install apache2-utils sudo apt install libapache2-mod-evasive vi /etc/apache2/mods-enabled/evasive.conf service apache restart edit it and set values as per below or whatever else you like, the time quantities are seconds     DOSSiteInterval     1     DOSBlockingPeriod   10     #DOSLogDir           "/var/lock/mod_evasive"
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