'\" t .TH "SYSTEMD\-BATTERY\-CHECK\&.SERVICE" "8" "" "systemd 254" "systemd-battery-check" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" systemd-battery-check.service, systemd-battery-check \- Check battery level whether there\*(Aqs enough charge, and power off if not\&. .SH "SYNOPSIS" .PP systemd\-battery\-check\&.service .HP \w'\fB/lib/systemd/systemd\-battery\-check\fR\ 'u \fB/lib/systemd/systemd\-battery\-check\fR [OPTIONS...] .SH "DESCRIPTION" .PP systemd\-battery\-check\&.service is used to check the battery level during the early boot stage to determine whether there\*(Aqs sufficient battery power to carry on with the booting process\&. .PP \fBsystemd\-battery\-check\fR returns success if the device is connected to an AC power source or if the battery charge is greater than 5%\&. It returns failure otherwise\&. .SH "OPTIONS" .PP The following options are understood by \fBsystemd\-battery\-check\fR: .PP \fB\-h\fR, \fB\-\-help\fR .RS 4 Print a short help text and exit\&. .RE .PP \fB\-\-version\fR .RS 4 Print a short version string and exit\&. .RE .SH "EXIT STATUS" .PP On success (running on AC power or battery capacity greater than 5%), 0 is returned, a non\-zero failure code otherwise\&. .SH "KERNEL COMMAND LINE" .PP The following variables are understood: .PP \fIsystemd\&.battery\-check=\fR\fI\fIBOOL\fR\fR .RS 4 Takes a boolean\&. If specified with false, \fBsystemd\-battery\-check\fR command will return immediately with exit status 0 without checking battery capacity and AC power existence, and the service systemd\-battery\-check\&.service will succeed\&. This may be useful when the command wrongly detects and reports battery capacity percentage or AC power existence, or when you want to boot the system forcibly\&. .RE .SH "SEE ALSO" .PP \fBsystemd\fR(1)