Aj-snapshot is a tiny application that can be used to take snapshots of JACK and/or ALSA client connections. Because JACK can support both audio and MIDI, aj-snapshot can save both types of connections for JACK. ALSA, on the other hand, only supports routing for MIDI clients. Aj-snapshot is intended for use from the command line. On Ubuntu 20.04, there are three options for installing aj-snapshot. Apt-get, apt, and aptitude are all available. Each strategy will be described in detail in the following sections. You may select any of them.
- Using apt-get to install aj-snapshot
- Using aptitude to install aj-snapshot
- Using apt to install aj-snapshot
Method 1: Using the apt-get command
Step 1: Using the following command, update the apt database using apt-get.
sudo apt-get update
Step 2: After upgrading the apt database, we can use apt-get to install aj-snapshot by performing the following command:
sudo apt-get -y install aj-snapshot
Method 2: Using apt-get
Step 1: The following command will update the apt database.
sudo apt update
Step 2: After upgrading the apt database, we can use apt to install aj-snapshot by performing the following command:
sudo apt -y install aj-snapshot
Method 3: Using aptitude
Step 1: If you want to use this method, you may need to install aptitude first because it is not normally installed by default on Ubuntu. Use the following command to update the apt database with aptitude.
sudo aptitude update
Step 2: After upgrading the apt database, we can use aptitude to install aj-snapshot by performing the following command:
sudo aptitude -y install aj-snapshot
Example of aj-snapshot
Example 1: Create a .snap file.
Creates a file named “test.snap” that contains a snapshot of all active ALSA and JACK connections. If the file already exists, aj-snapshot will prompt you to decide whether to replace it.
aj-snapshot demo.snap
Example 2: Restore all ALSA and JACK snap.
Restores all connections from the “test.snap” file, including ALSA and JACK. Any other connections that are currently in use will be unaffected.
aj-snapshot -r demo.snap