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<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 10] Aliases</TITLE><METANAME="DC.title"CONTENT="UNIX Power Tools"><METANAME="DC.creator"CONTENT="Jerry Peek, Tim O'Reilly & Mike Loukides"><METANAME="DC.publisher"CONTENT="O'Reilly & Associates, Inc."><METANAME="DC.date"CONTENT="1998-08-04T21:35:42Z"><METANAME="DC.type"CONTENT="Text.Monograph"><METANAME="DC.format"CONTENT="text/html"SCHEME="MIME"><METANAME="DC.source"CONTENT="1-56592-260-3"SCHEME="ISBN"><METANAME="DC.language"CONTENT="en-US"><METANAME="generator"CONTENT="Jade 1.1/O'Reilly DocBook 3.0 to HTML 4.0"><LINKREV="made"HREF="mailto:online-books@oreilly.com"TITLE="Online Books Comments"><LINKREL="up"HREF="part02.htm"TITLE="II. Let the Computer Do the Dirty Work "><LINKREL="prev"HREF="ch09_26.htm"TITLE="9.26 Expect "><LINKREL="next"HREF="ch10_02.htm"TITLE="10.2 Aliases for Common Commands "></HEAD><BODYBGCOLOR="#FFFFFF"TEXT="#000000"><DIVCLASS="htmlnav"><H1><IMGSRC="gifs/smbanner.gif"ALT="UNIX Power Tools"USEMAP="#srchmap"BORDER="0"></H1><MAPNAME="srchmap"><AREASHAPE="RECT"COORDS="0,0,466,58"HREF="index.htm"ALT="UNIX Power Tools"><AREASHAPE="RECT"COORDS="467,0,514,18"HREF="jobjects/fsearch.htm"ALT="Search this book"></MAP><TABLEWIDTH="515"BORDER="0"CELLSPACING="0"CELLPADDING="0"><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch09_26.htm"TITLE="9.26 Expect "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 9.26 Expect "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><B><FONTFACE="ARIEL,HELVETICA,HELV,SANSERIF"SIZE="-1">Chapter 10</FONT></B></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch10_02.htm"TITLE="10.2 Aliases for Common Commands "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 10.2 Aliases for Common Commands "BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="CHAPTER"><H1CLASS="chapter"><ACLASS="title"NAME="UPT-CHP-10">10. Aliases</A></H1><DIVCLASS="htmltoc"><P><B>Contents:</B><BR><ACLASS="sect1"HREF="#UPT-ART-4930"TITLE="10.1 Creating Custom Commands ">Creating Custom Commands </A><BR><ACLASS="sect1"HREF="ch10_02.htm"TITLE="10.2 Aliases for Common Commands ">Aliases for Common Commands </A><BR><ACLASS="sect1"HREF="ch10_03.htm"TITLE="10.3 C Shell Aliases with Command-Line Arguments ">C Shell Aliases with Command-Line Arguments </A><BR><ACLASS="sect1"HREF="ch10_04.htm"TITLE="10.4 Aliases in ksh and bash ">Aliases in ksh and bash </A><BR><ACLASS="sect1"HREF="ch10_05.htm"TITLE="10.5 Sourceable Scripts ">Sourceable Scripts </A><BR><ACLASS="sect1"HREF="ch10_06.htm"TITLE="10.6 Avoiding C Shell Alias Loops ">Avoiding C Shell Alias Loops </A><BR><ACLASS="sect1"HREF="ch10_07.htm"TITLE="10.7 How to Put if-then-else in a C Shell Alias ">How to Put if-then-else in a C Shell Alias </A><BR><ACLASS="sect1"HREF="ch10_08.htm"TITLE="10.8 Fix Quoting in csh Aliases with makealias and quote ">Fix Quoting in csh Aliases with makealias and quote </A><BR><ACLASS="sect1"HREF="ch10_09.htm"TITLE="10.9 Shell Functions ">Shell Functions </A><BR><ACLASS="sect1"HREF="ch10_10.htm"TITLE="10.10 Simulated Bourne Shell Functions and Aliases ">Simulated Bourne Shell Functions and Aliases </A></P><P></P></DIV><DIVCLASS="sect1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-4930">10.1 Creating Custom Commands </A></H2><PCLASS="para"></P><ULCLASS="itemizedlist"><LICLASS="listitem"><PCLASS="para">In most shells,<SPANCLASS="link">aliases (<ACLASS="linkend"HREF="ch10_02.htm"TITLE="Aliases for Common Commands ">10.2</A>, <ACLASS="linkend"HREF="ch10_03.htm"TITLE="C Shell Aliases with Command-Line Arguments ">10.3</A>, <ACLASS="linkend"HREF="ch10_04.htm"TITLE="Aliases in ksh and bash ">10.4</A>)</SPAN>are an easy way to shorten a long command line or do a short series ofcommands.</P></LI><LICLASS="listitem"><PCLASS="para">All except the oldest Bourne-type shells have<SPANCLASS="link">shell functions (<ACLASS="linkend"HREF="ch10_09.htm"TITLE="Shell Functions ">10.9</A>)</SPAN>.These are a cross between aliases and shell scripts.They're good both for shortening command lines and for running a short orlong series of commands.</P></LI><LICLASS="listitem"><PCLASS="para">You can<SPANCLASS="link">simulate shell functions (<ACLASS="linkend"HREF="ch10_10.htm"TITLE="Simulated Bourne Shell Functions and Aliases ">10.10</A>)</SPAN>on older Bourne shells.These "fake functions" don't have much more power than aliases - but they'rebetter than nothing!</P></LI></UL><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">JP</SPAN></P></DIV></DIV></DIV><DIVCLASS="htmlnav"><P></P><HRALIGN="LEFT"WIDTH="515"TITLE="footer"><TABLEWIDTH="515"BORDER="0"CELLSPACING="0"CELLPADDING="0"><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch09_26.htm"TITLE="9.26 Expect "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 9.26 Expect "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><ACLASS="book"HREF="index.htm"TITLE="UNIX Power Tools"><IMGSRC="gifs/txthome.gif"SRC="gifs/txthome.gif"ALT="UNIX Power Tools"BORDER="0"></A></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch10_02.htm"TITLE="10.2 Aliases for Common Commands "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 10.2 Aliases for Common Commands "BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">9.26 Expect </TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><ACLASS="index"HREF="index/idx_0.htm"TITLE="Book Index"><IMGSRC="gifs/index.gif"SRC="gifs/index.gif"ALT="Book Index"BORDER="0"></A></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172">10.2 Aliases for Common Commands </TD></TR></TABLE><HRALIGN="LEFT"WIDTH="515"TITLE="footer"><IMGSRC="gifs/smnavbar.gif"SRC="gifs/smnavbar.gif"USEMAP="#map"BORDER="0"ALT="The UNIX CD Bookshelf Navigation"><MAPNAME="map"><AREASHAPE="RECT"COORDS="0,0,73,21"HREF="../index.htm"ALT="The UNIX CD Bookshelf"><AREASHAPE="RECT"COORDS="74,0,163,21"HREF="index.htm"ALT="UNIX Power Tools"><AREASHAPE="RECT"COORDS="164,0,257,21"HREF="../unixnut/index.htm"ALT="UNIX in a Nutshell"><AREASHAPE="RECT"COORDS="258,0,321,21"HREF="../vi/index.htm"ALT="Learning the vi Editor"><AREASHAPE="RECT"COORDS="322,0,378,21"HREF="../sedawk/index.htm"ALT="sed & awk"><AREASHAPE="RECT"COORDS="379,0,438,21"HREF="../ksh/index.htm"ALT="Learning the Korn Shell"><AREASHAPE="RECT"COORDS="439,0,514,21"HREF="../lrnunix/index.htm"ALT="Learning the UNIX Operating System"></MAP></DIV></BODY></HTML>⌨️ 快捷键说明
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