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<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 14] 14.8 Quick cds with 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="1998-08-04T21:37:05Z"><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="ch14_01.htm"TITLE="14. Moving Around in a Hurry"><LINKREL="prev"HREF="ch14_07.htm"TITLE="14.7 Nice Aliases for pushd "><LINKREL="next"HREF="ch14_09.htm"TITLE="14.9 cd by Directory Initials "></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="ch14_07.htm"TITLE="14.7 Nice Aliases for pushd "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 14.7 Nice Aliases for pushd "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><B><FONTFACE="ARIEL,HELVETICA,HELV,SANSERIF"SIZE="-1">Chapter 14<BR>Moving Around in a Hurry</FONT></B></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch14_09.htm"TITLE="14.9 cd by Directory Initials "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 14.9 cd by Directory Initials "BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="SECT1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-1410">14.8 Quick cds with Aliases </A></H2><PCLASS="para"><ACLASS="indexterm"NAME="AUTOID-15480"></A><ACLASS="indexterm"NAME="AUTOID-15483"></A>If you do a lot of work in some particular directories, it can be handyto make<SPANCLASS="link">aliases (<ACLASS="linkend"HREF="ch10_02.htm"TITLE="Aliases for Common Commands ">10.2</A>)</SPAN>that take you to each directory quickly.For example, this C shell alias lets you type <CODECLASS="literal">pwr</CODE> to change to the<EMCLASS="emphasis">/books/troff/pwrtools</EM> directory:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">alias pwr cd /books/troff/pwrtools</PRE></BLOCKQUOTE></P><PCLASS="para">(If your shell doesn't have aliases, you can use a<SPANCLASS="link">shell function (<ACLASS="linkend"HREF="ch10_09.htm"TITLE="Shell Functions ">10.9</A>)</SPAN>.A<SPANCLASS="link">shell script (<ACLASS="linkend"HREF="ch01_05.htm"TITLE="Anyone Can Program the Shell ">1.5</A>)</SPAN>won't work, though, because it runs in a<SPANCLASS="link">subshell (<ACLASS="linkend"HREF="ch38_04.htm"TITLE="Subshells ">38.4</A>)</SPAN>.)</P><PCLASS="para">When you pick the alias names, it's a good idea not to conflict withcommand names that are already on the system.Article<ACLASS="xref"HREF="ch44_21.htm"TITLE="Picking a Name for a New Command ">44.21</A>shows how to pick a new name.</P><PCLASS="para">If you have a lot of these directory-changing aliases, you might want to putthem in a separate file named something like <EMCLASS="emphasis">.cd_aliases</EM>.Then add these lines to your <EMCLASS="emphasis">.cshrc</EM> file:</P><PCLASS="para"><TABLECLASS="screen.co"BORDER="1"><TR><THVALIGN="TOP"><PRECLASS="calloutlist"><ACLASS="co"HREF="ch44_23.htm"TITLE="44.23 Reading Files with the . and source Commands ">source</A> <ACLASS="co"HREF="ch14_11.htm"TITLE="14.11 Finding (Anyone's) Home Directory, Quickly ">~</A> </PRE></TH><TDVALIGN="TOP"><PRECLASS="screen">alias setcds source ~/.cd_aliasessetcds</PRE></TD></TR></TABLE></P><PCLASS="para">That reads your aliases into each shell.If you edit the <EMCLASS="emphasis">.cd_aliases</EM> file, you can read the new file into yourshell by typing <CODECLASS="literal">setcds</CODE> from any directory.</P><PCLASS="para">Finally, if you're in a group of people who all work on the same directories,you could make a central alias file that everyone reads from their <EMCLASS="emphasis">.cshrc</EM>files as they log in.Just use the setup above.</P><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">JP</SPAN></P></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="ch14_07.htm"TITLE="14.7 Nice Aliases for pushd "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 14.7 Nice Aliases for pushd "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="ch14_09.htm"TITLE="14.9 cd by Directory Initials "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 14.9 cd by Directory Initials "BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">14.7 Nice Aliases for pushd </TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><ACLASS="index"HREF="index/idx_0.htm"TITLE="Book 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