Issue with encrypted stdin in solaris

Question

hi all ..
i've found a following problem:
i need to build .bin file installer for customer .. i am used to use following way:
cat script.sh data.tgz > installer.binbut when trying from within script cut data.tgz part, returned file is encrypted and its type is changed
from :: data.tgz: gzip compressed data - deflate method
to :: foo.tgz: gzip compressed data - deflate method , extra field , original file name , comment , encrypted
it works like charm under Linux and under osx, i tested it under these two other NIXes. I created a example script which accepts both solaris and Linux:
#!/bin/sh
case `uname -s` in
    Linux ) tar=`which tar`;;
    SunOS ) tar=`ls /usr/sfw/bin/gtar || echo missing gtar binary 1>&2 && exit 1`;;
esac
sed '1,/^###\ end$/d' $0 | md5sum -;
sed '1,/^###\ end$/d' $0 | $tar tzvf -;
exit 0;
### endyou can put there some random .tgz file for testing ..
just for example, under solaris md5sum differs and gtar vomits following error message while trying to unpack extracted .tgz:
# ./installer.bin
09bd431049e6777a1f8db5c35bf00018  -
gzip: stdin is encrypted -- not supported
/usr/sfw/bin/gtar: Child died with signal 13
/usr/sfw/bin/gtar: Error exit delayed from previous errors^^ so i presume that the main problem is in message: *"gzip: stdin is encrypted -- not supported"*
Linux prints out a correct md5sum and content of archive for exactly same file ..
any idea please?
regards, daniel

Answer 1

thanks .. resolved .. it causes Sun flavoured sed .. perl produces correct cut data.tgz part this way:
# perl -ne 'if(/^### end$/) {$print=1; next}; print if $print' installer.bin | md5sum -; md5sum data.tgz
e8d365e3b01e2712fbddb85b240aca10  -
e8d365e3b01e2712fbddb85b240aca10  data.tgzresolved !!
regards, daniel