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--- linux:linux-tutorials:quicktutorials [2024/12/25 14:07] – created Zyzonix
+++ linux:linux-tutorials:quicktutorials [2024/12/25 14:11] (current) – Zyzonix
@@ Line 1: / Line 1: @@
 ===== Quicktutorials =====
+==== Get OS information ====
+Get OS information from ''/etc/os-release''.
+Example: Debian:
+<code bash>
+PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
+NAME="Debian GNU/Linux"
+VERSION_ID="11"
+VERSION="11 (bullseye)"
+VERSION_CODENAME=bullseye
+ID=debian
+HOME_URL="https://www.debian.org/"
+SUPPORT_URL="https://www.debian.org/support"
+BUG_REPORT_URL="https://bugs.debian.org/"
+</code>
+Import this to a bash script via:
+The var ''ID'' is then ''debian'':
+<code bash>
+if [ -f /etc/os-release ]; then
+  . /etc/os-release
+  ID=$ID
+fi
+</code>
+Or use ''neofetch'':
+<code bash>neofetch</code>
+//installed via: ''apt install neofetch''//
+Sourced from: [[https://unix.stackexchange.com/questions/6345/how-can-i-get-distribution-name-and-version-number-in-a-simple-shell-script|stackexchange.org]]
+------
+==== View CPU information ====
+To view information about the CPU use
+<code bash>cat /proc/cpuinfo</code>
+------
+==== Create .img on Linux CLI ====
+It's quite simple to create an image of a disk, for example an SD card, therefore use the following command:
+<code bash>dd if=/path/to/device of=image.img</code>
+The ''/path/to/device'' can be found out with:
+<code bash>lsblk</code>
+For example it can be ''/dev/sda''.
+Remind that using this method will include also empty parts. An image of a 32 GB SD card will later have a size of 32 GB although for example 16 GB are unused.
+-----
+==== Show WiFi password via CLI ====
+Thereby that a system is required to save WiFi passwords in clear, it can also show those passwords to you.
+By running the following command (NetworkManager required), the SSID, password and a QR-code of the current connected WiFi will be displayed in your CLI:
+<code bash>nmcli device wifi show-password</code>