Le 20/03/2012 05:24, Bryan Kadzban a écrit :
> That's weird. There are no differences in the strip binaries (when you
> do strip the libraries), right? Or in libbfd.so.whatever-it-is?
Actually, in the book, the binaries in {,/usr}{/bin,/sbin} are stripped,
and the
libraries in {,/usr}lib from debug symbols. Then, the easiest thing is
that I give you the script I use.
It is short enough, and I prefer to have it checked:
-
#!/bin/bash
# Adapted from Greg's Schaffer ICA code reproduced in jhalfs
: << inline_doc
Compare two system directories, in the following way:
- Remove all non-relevant directories
- Remove symlinks
- Gunzip all the .gz files (gzip puts a time stamp)
- Extract library archives (.a files) in directories with the same names
- Then find all the files which exit only on one system
- Second, for files which appear in both system dirs:
- if ascii, diff them
- if elf, diff the result of objdump -x -s
- other files: diff them and report if different
INPUT: $1 and $2 are directories (no trailing /)
OUPUT: the results of the above described operations in binarydiff and
asciidiff
inline_doc
MYDIR=$(pwd)
cd $1
rm -rf dev home jhalfs media mnt opt proc sources root srv sys tmp tools
usr/local usr/src
echo Removing symlinks in $1>&2
find . -type l | xargs rm -f
echo unzipping files in $1>&2
find . -name \*.gz | xargs gunzip
echo extracting archives in $1>&2
L=$(find . -name \*.a ! -name \*libieee.a ! -name \*libmcheck.a ! -type d)
for archive in $L; do
mv $archive $archive.XX
mkdir $archive
BA=$(basename $archive)
pushd $archive > /dev/null
ar x ../$BA.XX
popd > /dev/null
rm $archive.XX
done
find . -print | sed 's@^\./@@' > $MYDIR/content1
cd $MYDIR
cd $2
rm -rf dev home jhalfs media mnt opt proc sources root srv sys tmp tools
usr/loc
al usr/src
echo Removing symlinks in $2>&2
find . -type l | xargs rm -f
echo unzipping files in $2>&2
find . -name \*.gz | xargs gunzip
echo extracting archives in $2>&2
L=$(find . -name \*.a ! -name \*libieee.a ! -name \*libmcheck.a ! -type d)
for archive in $L; do
mv $archive $archive.XX
mkdir $archive
BA=$(basename $archive)
pushd $archive > /dev/null
ar x ../$BA.XX
popd > /dev/null
rm $archive.XX
done
find . -print | sed 's@^\./@@' > $MYDIR/content2
cd $MYDIR
echo "Files only in $1 (<) or $2 (>)"
diff content1 content2
echo Diffing directories
LC_ALL=POSIX diff -ur $1 $2 > rawdiff
echo Reading info in executables
for file in $(cat rawdiff | grep differ | cut -d" " -f3); do
file1=$(echo $file | sed "s@^$1\/@@")
file2=$(basename $file)
case $(file -b $file) in
*ELF*)
objdump -x -s $1/$file1 > $file2.1
objdump -x -s $2/$file1 > $file2.2
diff -u $file2.1 $file2.2;;
*) diff -u $1/$file1 $2/$file1;;
esac
done > binarydiff
echo Reading info in ascii files
cat rawdiff | grep -v differ > asciidiff
---
There are very little differences, besides libgmpxx.so
and libgmpxx.la, ans time stamps.
Pierre
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