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TOTAL newbie no LINUX or BIOPERL

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linux-howto

http://unix.stackexchange.com – Help! :) I am trying to learn bioinfomatics the hard way I think, i just got tossed into this and it's sink or swim. I have no background in Linux (ubuntu and bash) or perl or python. I am trying to use programs (bioperl modules mostly) that have been installed und used on this machine before. Now it seems that an older version functions, but not the newer one. specifically its the NCBI standalone blast group of programs. I can use blastall, but not blastn, fastacmd instead blastdbcmd even though these modules are present and show up as executable files. the error i get is "no such file or dir (HowTos)