How can I create an alias for a git [action] command (which includes spaces)?
Most of my my aliases are of this form: alias p='pwd'
Unix & Linux
How to use ssh-agent with multiple (valid) keys and yet choose which one to use?
Let’s say there are two keys A and B, both of which are valid for [email protected] public key authentication. Since authorized_keys is configured for different behaviour depending on the key, ~/.ssh/config on the client uses something like
How to view and edit the code of a PDF file
I was wondering how to view and edit the code of a PDF file?
How to use ifconfig to show active interface only
By default ifconfig will show me all available interfaces , but what if I just want to display active ones? Like, en0 only in below.
How is /etc/fstab accessed before root is mounted?
I was making some changes to /etc/fstab, when this chicken and egg question occurred to me – if /etc/fstab contains the instructions for mounting the file systems, including the root partition, then how does the OS read that file in the first place?
Trap, ERR, and echoing the error line
I’m trying to create some error reporting using a Trap to call a function on all errors:
Record every keystroke and store in a file
I need to record every keystroke and store in a file in the user directory ~, when using my account, I am not sudoer and I cannot install programs (like logKeys) in any way. How could I do so using terminal?
How can I tell cron to run a command every other day (odd/even)
When configuring cron to run a command every other day using the “Day of Month” field, like so:
Running GUI application as another (non-root) user
Let’s say I have 2 user accounts user1 and user2. When I login as user1, and then switch to user2 using su, I can execute command-line programs, but GUI programs fail.
Display Spinner while waiting for some process to finish
How can I show spinner till command line finish it is job? In other words, If I am running a script and I want to show spinner while this script is running and the spinner disappears when the script finish it is job.