lab10

#!/bin/tcsh
# Author: Wolfgang C. Strack
# CIS18C Lab 10 script

############### initialize some global variables
set usageMessage = "Usage: $0 directoryName"

############### main
if ( $#argv != 1 ) then
	echo $usageMessage
	exit 1
endif

########## checkIfValidDir "function"
if ( ! -d "$1" ) then
	echo "Error: $1 is not a directory"
	exit 1
endif

# cd to directory argument
cd $1

pwd -P | egrep "/home/(student|staff)/$USER" > /dev/null

if ( $status != 0 ) then
	echo "Error: `pwd -P` is not your home directory or any of its subdirectories"
	exit 1
endif
########## end checkIfValidDir

########## getListOfMatchingFiles "function"
set listOfMatchingFiles = ()

foreach file (`ls`)
	if ( -f $file ) head -1 $file | egrep '\#\!/bin/bash' > /dev/null
	if ( $status == 0 ) then
		set listOfMatchingFiles = ($listOfMatchingFiles $file)
	endif
end
########## end getListOfMatchingFiles

if ( $#listOfMatchingFiles == 0 ) then
	echo "No files in $(pwd -P) are bash scripts"
	exit
endif

########## printMatchingFiles "function"
onintr - # disable ctrl-c signal

echo "Total number of files in `pwd -P` : `ls | wc -l`"
echo "Total number of files in `pwd -P` that are bash scripts: $#listOfMatchingFiles"
echo "Now printing names of files that are bash scripts:"
echo

foreach filename ($listOfMatchingFiles)
	echo $filename
	sleep 3
end

onintr # reset default handling
########## end printMatchingFiles

cd - > /dev/null