.kshrc), which is a standard command and programming language.
  The startup configuration file is .kshrc.
 .bashrc), which is largely compatible with sh and includes useful features from Korn shell ksh and C shell csh.
 .cshrc), which is with a C-like syntax.
 .zshrc), which is similar to ksh with many additions to please csh users and some tcsh features.
 .tcshrc), which is C shell with file name completion and command line editing.
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     What is dangerous?      Sneezing while having diarrhea!  |