We present a dataset of 21459 shell commands from 275 participants who attended cybersecurity training and solved assignments in the Linux terminal. Each acquired data record contains a command with its arguments and metadata, such as a timestamp, working directory, and host identification in the emulated training infrastructure. The commands were captured in Bash, ZSH, and Metasploit shells. The data are stored as JSON records collected using an open-source logging toolset and two open-source interactive learning environments. Researchers and developers may freely use the dataset or deploy the learning environments with the logging toolset to generate their own data in the same format.