System
rtcwake
Wakes the system from sleep mode.
Ubuntu
CentOS
Debian
Arch
SUSE
Fedora
Verified: 2025-10-08
Syntax
$rtcwake [OPTIONEN] -m MODUS -s SEKUNDEN
Examples
$sudo rtcwake -m mem -s 3600
$sudo rtcwake -m off -t $(date +%s -d '+1 hour')
Typical use cases
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Standard usage
rtcwake --help
Note
Uses the RTC (Real Time Clock) for Wake-on-Timer. Part of util-linux.
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