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SubjectRe: Kernel build automation help
Hi Mike.

On Thu, 22 Apr 1999, Mike A. Harris wrote:

> Assuming that kernel sources are properly installed in
> /usr/src/linux from a clean tarball, and are unmodified, what is
> the easiest way to grab the kernel version number of the
> installed source?

> I've been trying to grab it from the top level makefile, but my
> script writing abilities seem to be lacking.

> Anyone have a few lines of simple bash code to get the kernel
> source version?

Enclosed is the bash script I use for this purpose. It deals with all
the formats I've seen for storing the said details...

Best wishes from Riley.

+----------------------------------------------------------------------+
| There is something frustrating about the quality and speed of Linux |
| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this XXXX feature, but I bet someone |
| else has already done so and is just about to release their patch. |
+----------------------------------------------------------------------+
* ftp://ftp.MemAlpha.cx/pub/rhw/Linux
* http://www.MemAlpha.cx/kernel.versions.html
#!/bin/bash
if [ $# -eq 0 ]; then
echo "Usage: `basename $0` directory..."
exit 255
fi
function grab() {
head $1/Makefile \
| grep ' = ' \
| grep -v -i arch \
| cut -d '=' -f 2 \
| sed 's/ //g' \
| tr '\n' ' '
echo
}
function format() {
local MAJOR MINOR PATCH EXTRA
while read MAJOR MINOR PATCH EXTRA ; do
if [ -z "$EXTRA" ]; then
printf '%s.%s.%s\n' $MAJOR $MINOR $PATCH
else
printf '%s.%s.%s-%s\n' $MAJOR $MINOR $PATCH $EXTRA
fi
EXTRA=''
done
}
for DIR do
grab $DIR | format
done
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