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Part IV: Under Mac OS X's Hood > bash: The Bourne-Again Shell

Chapter 20. bash: The Bourne-Again Shell

bash is the GNU version of the standard Bourne shell—the original Unix shell—and incorporates many popular features from other shells such as csh, tcsh, and the Korn shell (ksh). tcsh, which is described in the following chapter, offers many of the features in this chapter, and is also available on most distributions of Linux. However, bash is the default user shell for Mac OS X Panther.

If executed as part of the user's login, bash starts by executing any commands found in /etc/profile. It executes the commands found in ~/.bash_profile, ~/.bash_login, or ~/.profile (searching for each file only if the previous file is not found).


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