Query if a package is installed or installable using apt-cache command

In Raspberry Pi OS (or Linux), apt-cache queries and displays available information about installed and installable packages.

example: to query if gnome-screenshot is available to install
$ apt-cache search gnome-screenshot



Comments

Post a Comment

Popular posts from this blog

480x320 TFT/ILI9488 SPI wih EP32C3 (arduino-esp32) using Arduino_GFX Library

Image
Display on 3.5 inch 480x320 TFT with SPI ILI9488 (SKU:MSP3520) with XIAO EP32C3 (arduino-esp32) using Arduino_GFX Library. Install GFX Library for Arduino (Arduino_GFX) in Library Manager. Arduino_GFX is a Arduino graphics library supporting various displays with various data bus interfaces. This library start rewrite from Adafruit_GFX, LovyanGFX, TFT_eSPI, Ucglib, and more... Connection:      Connection between XIAO ESP32C3 and      3.5" 480x320 TFT with SPI ILI9488 (SKU:MSP3520)      XIAO ESP32C3                        +-------------+           +---------|GPIO2    5V      |          | +-----|GPIO3    GND    |-----------+ | +-|-----|GPIO4    3V3    |---------+ | | | | +---|GPIO5    GPIO10|-----...
Read more

Drive 320x240 ILI9341 SPI TFT using ESP32-S3 (NodeMCU ESP-S3-12K-Kit) using TFT_eSPI library, in Arduino Framework.

Image
Drive 2.4 inch 320x240 ILI9341 SPI TFT on Ai-Thinker NodeMCU ESP-S3-12K-Kit using TFT_eSPI library, in Arduino Framework. The steps same as in my former post " Drive ILI9341 (8-bit parallel) using ESP32-S3 (ESP32-S3-DevKitC-1) ", with custom user setup for SPI ILI9341 driver. The custom user setup I modify from is Setup70b_ESP32_S3_ILI9341.h (inside your local installed library folder or here ), copy it to the new created "TFT_eSPI_Setups" folder, rename as mySetup70b_ESP32_S3_ILI9341.h. For SPI connection, I follow the original assignment. For DC and RST pins, the original assigned pins (GPIO 7 and 6) are connected to LEDs in NodeMCU ESP-S3-12K-Kit (ref:  ESP-S3-12K-Kit Schematic ), so I re-assign to GPIO 16 and 15). mySetup70b_ESP32_S3_ILI9341.h // Setup for the ESP32 S3 with ILI9341 display // Note SPI DMA with ESP32 S3 is not currently supported #define USER_SETUP_ID 70 // See SetupX_Template.h for all options available #def...
Read more