journalctl:tldr:4f0da
journalctl: Filter messages within a time range (either timestamp or placeholders like "yesterday").
$ journalctl --since ${select} --until ${YYYY-MM-DD HH:MM:SS}
try on your machine
The command "journalctl --since ${select} --until ${YYYY-MM-DD HH:MM:SS}" is used to view the system journal logs within a specified time range.
Let's break down the command:
- "journalctl" is a command-line utility for querying and displaying logs from the systemd journal.
- "--since ${select}" specifies the starting time of the log entries to be displayed. The "${select}" part is a placeholder that should be replaced with a specific value or expression. This value can be a specific timestamp, a relative time like "1 hour ago," or a descriptive expression like "yesterday."
- "--until ${YYYY-MM-DD HH:MM:SS}" specifies the ending time of the log entries to be displayed. The "${YYYY-MM-DD HH:MM:SS}" should be replaced with a specific date and time in the format "YYYY-MM-DD HH:MM:SS."
By providing a time range between "--since" and "--until," the command filters and displays logs that fall within that range. It helps in retrieving logs related to specific events or troubleshooting issues that occurred within a defined period.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.