Everyone knows that crontab entries look like this:
* * * * * /usr/local/bin/my-script
Which will execute command “my-script” every minute.
Continue reading “Cron @reboot execute command on system start like rc.local”
How to recover screen session that can not be resumed
Screen session runs automatically when the machine boots, but when I try to resume it with
screen -r
It states that:There is no screen to be resumed.When you do ps aux you can see that there is a running process: Continue reading “How to recover screen session that can not be resumed”
How to prevent kernel panic when allocating page on android sticks running linux
I have Debian Jessie installed on gk802 Android stick running Freescale i.MX6 quad core CPU. Often I faced issues with kernel panic when allocating pages, which leaves stick unusable.
To mitigate this issue add following to your /etc/sysctl.conf Continue reading “How to prevent kernel panic when allocating page on android sticks running linux”
Configure SSH client to keep connection alive in Linux
To keep SSH connection alive you must edit your ~/.ssh/config file (if the file does not exist create it) and enter the following on top of the file:
Host * ServerAliveInterval 60
First line applies this config to all hosts (*), and the second one is interval when to send keepalive packets in seconds (60).
Log each command in bash history after execution
Put this into ~/.bashrc file of your account (if the file does not exist, you create it):
shopt -s histappend PROMPT_COMMAND="history -a;$PROMPT_COMMAND"
In order for this to start working you need to log out and in again.