Shell scripts should run correctly using dash.
Each source file must start with a comment containing your name and a description.
Create a shell script which searches for words consisting only of the alphabetic hexadecimal characters [a-fA-F] and characters [oOlLsS] (letters O, L, S), and displays those words in lowercase, together with hexified versions: [oO] is replaced by 0 (number 0), [lL] is replaced by 1 (number 1), and [sS] is replaced by 5 (number 5). Assume that each line of input contains a single word.
Usage:
dash hex.sh [-#] [file...]
The optional -# argument specifies a minimum acceptable
word length, e.g. using -4 would cause it to only display
hex words containing 4 or more characters. One or more input file
names may optionally be specified on the command line. If no input
file names are specified, the script will read from standard input.
Test using the provided words.txt file. which is available here and also in the VECR a8/ directory.
The script must use only standard Unix utility commands, such as cat, expr, grep, paste, sed, tr, etc. Do not use awk or perl and do not invoke the C compiler.
Sample Runs
$ wc -l words.txt 6256 words.txt $ dash p1.sh words.txt | wc -l 3273 $ dash p1.sh -10 words.txt | wc -l 25 $ dash p1.sh -10 words.txt words.txt | wc -l 50 $ cat words.txt | dash p1.sh -4 | wc -l 2353 $ dash p1.sh -10 words.txt | tail -n 5 looseleafs 1005e1eaf5 obsolesced 0b501e5ced saddleleaf 5add1e1eaf saddleless 5add1e1e55 scaffolded 5caff01ded $ dash p1.sh -11 words.txt basellaceae ba5e11aceae salsolaceae 5a1501aceae coldblooded c01db100ded $ dash p1.sh words.txt | grep 'food' food f00d foodless f00d1e55 foods f00d5 seafood 5eaf00d seafoods 5eaf00d5 $