File: kernel-version

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#!/usr/bin/perl
#
# Extract the kernel version from the kernel version header file.  Takes the
# kernel source path as its only argument.  If the version header couldn't be
# found, print nothing and exit quietly.

my $ksrc = shift;
unless ($ksrc && open (VERSION, "$ksrc/include/linux/version.h")) {
    exit 0;
}
my $found;
my $line = <VERSION>;
if ($line =~ /"(.+)"/) {
    print "$1\n";
    $found = 1;
}
exit 0 if $found;
unless (open (VERSION, "$ksrc/include/config/kernel.release")) {
    exit 0;
}
if ($line = <VERSION>) {
    print "$line";
}
exit 0;