===================================================== Perl
---------------------------- verify modules

===================================================== Apache + mod_perl
---------------------------- mod_perl
gunzip <apache_1.3.X.tar.gz | tar xvf -
gunzip <mod_perl-1.XX.tar.gz | tar xvf -
cd mod_perl-1.XX
perl Makefile.PL APACHE_SRC=../apache_1.3.X/src \
             DO_HTTPD=1 USE_APACI=1 \
             [EVERYTHING=1 ...]
make
make install

    [optionally you now have the chance to prepare or add more
     third-party modules to the Apache source tree]

---------------------------- apache
cd ../apache_1.3.X
./configure --prefix=/usr/local/apache \
        --activate-module=src/modules/perl/libperl.a \
        [--enable-shared=perl]
make
make install
---------------------------- 
/usr/local/apache/bin/httpsdctl start
---------------------------- files to offsite
make tar_Apache		site_perl+Apache
make offsite-tar	copy all header files from the apache src 
---------------------------- mod_perl as DSO I<outside> Apache source tree
gunzip <mod_perl-1.X.tar.gz | tar xvf -
cd mod_perl-1.X
perl Makefile.PL \
     USE_APXS=1 \
     WITH_APXS=/path/to/bin/apxs \
     EVERYTHING=1 \
     [...]
make
make test
make install 
------------------------- example
for modperl 1.21
perl Makefile.PL USE_APXS=1 USE_DSO=1 WITH_APXS=/usr/local/apache/bin/apxs EVERYTHING=1
make
make install

for apache 1.3.9
./configure --enable-rule=shared_core --with-perl=/usr/bin/perl --enable-module=so --enable-module=rewrite
------------------------- sh script
#!/bin/sh
# create modperl and Apache

tar xvf modperl*.tar
tar xvf apache*.tar

cd ../modperl
perl Makefile.PL APACHE_SRC=../apache-1.3/src DO_HTTPD=1 USE_APACI=1 PREP_HTTPD=1 EVERYTHING=1
make

cd ../apache-1.3
./configure --prefix=/usr/local/apache --enable-module=all --enable-shared=max --activate-module=src/modules/perl/libperl.a

cat <<EOM
As root:
in modperl
make install
in apache
make install
EOM
exit
===================================================== libraries
libtool --config	lib info
===================================================== sed
sed -e whatever -e else -e somethingmore | wrapper
------------------------- print after line "Subject:"
cat www/dir/backups/inc.19990409 | sed -n '/^Subject:/,$p'
===================================================== C
Original files in oldfoo/, and the modified source in foo/
diff -ur oldfoo foo > patchfile