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Changing file extension in csh alias

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http://www.unix.com – I want to type only the filename of a gcc source that has ".syn" as an extension and copy it, changing the extension to ".c" so it can be compiled. I do it as follows: Code:     if (-e $1.syn) then     /bin/cp $1.syn $1.c     endif This works fine, but if I want to repeat the compilation by recovering the previous call using history, the full filename plus the extension ".syn" appears and I have to delete the ".syn" to use my script. Because so many programs give one an option of typing a filename with or wit (HowTos)