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chapter9/findlarge.ksh

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+#!/usr/bin/ksh
+#
+# SCRIPT:findlarge.ksh
+#
+# AUTHOR: Randy Michael
+#
+# DATE: 11/30/2007
+#
+# REV: 1.0.A
+#
+# PURPOSE: This script is used to search for files which
+# are larger than $1 Meg. Bytes.  The search starts at
+# the current directory that the user is in, `pwd`, and
+# includes files in and below the user's current directory.
+# The output is both displayed to the user and stored
+# in a file for later review.
+#
+# REVISION LIST:
+#
+#
+#
+# set -x   # Uncomment to debug this script
+
+
+############################################
+
+function usage
+{
+echo "\n***************************************"
+echo "\n\nUSAGE:    findlarge.ksh  [Number_Of_Meg_Bytes]"
+echo "\nEXAMPLE:  filelarge.ksh  5"
+echo "\n\nWill Find Files Larger Than 5 Mb in, and Below, the 
+Current Directory..."
+echo "\n\nEXITING...\n"
+echo "\n***************************************"
+exit
+}
+
+############################################
+
+function cleanup
+{
+echo "\n********************************************************"
+echo "\n\nEXITING ON A TRAPPED SIGNAL..."
+echo "\n\n********************************************************\n"
+exit
+}
+
+############################################
+
+# Set a trap to exit.  REMEMBER - CANNOT TRAP ON kill -9 !!!!
+
+trap 'cleanup' 1 2 3 15
+
+############################################
+
+# Check for the correct number of arguments and a number
+# Greater than zero
+
+if [ $# -ne 1 ]
+then
+        usage
+fi
+
+if [ $1 -lt 1 ]
+then
+	usage
+fi
+
+############################################
+
+# Define and initialize files and variables here...
+
+THISHOST=`hostname` 	# Hostname of this machine
+
+DATESTAMP=`date +"%h%d:%Y:%T"`
+
+SEARCH_PATH=`pwd`	# Top level directory to search
+
+MEG_BYTES=$1		# Number of Mb for file size trigger
+
+DATAFILE="/tmp/filesize_datafile.out" # Data storage file
+>$DATAFILE		# Initialize to a null file
+
+OUTFILE="/tmp/largefiles.out" # Output user file
+>$OUTFILE		# Initialize to a null file
+
+HOLDFILE="/tmp/temp_hold_file.out" # Temporary storage file
+>$HOLDFILE		# Initialize to a null file
+
+############################################
+
+# Prepare the output user file
+
+echo "\nSearching for Files Larger Than ${MEG_BYTES}Mb starting in:"
+echo "\n==> $SEARCH_PATH"
+echo "\nPlease Standby for the Search Results..."
+echo "\nLarge Files Search Results:" >> $OUTFILE
+echo "\nHostname of Machine: $THISHOST" >> $OUTFILE
+echo "\nTop Level Directory of Search:" >> $OUTFILE
+echo "==> $SEARCH_PATH" >> $OUTFILE
+echo "\nDate/Time of Search: `date`" >> $OUTFILE
+echo "\n\nSearch Results Sorted by Time:" >> $OUTFILE
+
+############################################
+
+# Search for files > $MEG_BYTES starting at the $SEARCH_PATH
+
+find $SEARCH_PATH -type f -size +${MEG_BYTES}000000c \
+	 -print > $HOLDFILE
+
+# How many files were found?
+
+if [ -s $HOLDFILE ]
+then
+    NUMBER_OF_FILES=`cat $HOLDFILE | wc -l`
+
+    echo "\nNumber of Files Found: ==> $NUMBER_OF_FILES\n" >> $OUTFILE
+
+    # Append to the end of the Output File...
+
+    ls -lt `cat $HOLDFILE` >> $OUTFILE
+
+    # Display the Time Sorted Output File...
+
+    more $OUTFILE
+
+    echo "\nThese Search Results are Stored in ==> $OUTFILE"
+    echo "\nSearch Complete...EXITING...\n\n\n"
+else
+    cat $OUTFILE
+    echo "\nNo Files were Found in the Search Path that"
+    echo "are Larger than ${MEG_BYTES}Mb\n"
+    echo "\nEXITING...\n\n"
+fi