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<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 23] 23.22 Using find to Clear Out Unneeded Files </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="1998-08-04T21:41:22Z"><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="ch23_01.htm"TITLE="23. Removing Files"><LINKREL="prev"HREF="ch23_21.htm"TITLE="23.21 Removing Every File but One "><LINKREL="next"HREF="ch24_01.htm"TITLE="24. 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Other Ways to Get Disk Space"BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="SECT1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-0286">23.22 Using find to Clear Out Unneeded Files </A></H2><PCLASS="para"><ACLASS="indexterm"NAME="AUTOID-26119"></A><ACLASS="indexterm"NAME="AUTOID-26123"></A><ACLASS="indexterm"NAME="AUTOID-26125"></A>Do you run <EMCLASS="emphasis">find</EM> on your machine every night? Do you know what it hasto go through just to find out if a file is three days old and smallerthan 10 blocks or owned by "fred" or setuid root?This is why I tried to combine all the things we need done forremoval of files into one big <EMCLASS="emphasis">find</EM> script:</P><PCLASS="para"><TABLECLASS="screen.co"BORDER="1"><TR><THVALIGN="TOP"><PRECLASS="calloutlist"> <ACLASS="co"HREF="ch45_21.htm"TITLE="45.21 n>&m: Swap Standard Output and Standard Error ">2>&1</A> </PRE></TH><TDVALIGN="TOP"><PRECLASS="screen"> #! /bin/sh## cleanup - find files that should be removed and clean them# out of the file system.find / \( \( -name '#*' -atime +1 \) \ -o \( -name ',*' -atime +1 \) \ -o \( -name rogue.sav -atime +7 \) \ -o \( \( -name '*.bak' \ -o -name '*.dvi' \ -o -name '*.CKP' \ -o -name '.*.bak' \ -o -name '.*.CKP' \) -atime +3 \) \ -o \( -name '.emacs_[0-9]*' -atime +7 \) \ -o \( -name core \) \ -o \( -user guest -atime +9 \) \\) -print -exec rm -f {} \; > /tmp/.cleanup 2>&1</PRE></TD></TR></TABLE></P><PCLASS="para">[This is an example of using a single <EMCLASS="emphasis">find</EM> command to searchfor files with different names and last-access times (see article <ACLASS="xref"HREF="ch17_05.htm"TITLE="Searching for Old Files ">17.5</A>).As Chris points out, doing it allwith one <EMCLASS="emphasis">find</EM> is much faster, and less work for the disk, thanrunning a lot of separate <EMCLASS="emphasis">find</EM>s. The parentheses group each part of the expression.The neat indentation makes this big thing easier to read.The <CODECLASS="literal">-print</CODE> <CODECLASS="literal">-exec</CODE> at the end removes each file and also writes thefilenames to standard output, where they're collected into a file named<EMCLASS="emphasis">/tmp/.cleanup</EM>-people can read it to see what files were removed.You should probably be aware that printing the names to <EMCLASS="emphasis">/tmp/.cleanup</EM> lets everyone see pathnames,like <EMCLASS="emphasis">/home/joe/personal/resume.bak</EM>, that somepeople might consider sensitive.Another thing to be aware of is thatthis <EMCLASS="emphasis">find</EM> command starts at the root directory; youcan do the same thing for your own directories. <EMCLASS="emphasis">-JP</EM> ]</P><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">CT</SPAN> <SPANCLASS="bibliomisc">in <ACLASS="systemitem.newsgroup"HREF="news:net.unix-wizards">net.unix-wizards</A> on Usenet, 9 June 1985</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="ch23_21.htm"TITLE="23.21 Removing Every File but One "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 23.21 Removing Every File but One "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="CHAPTER"HREF="ch24_01.htm"TITLE="24. 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