speller

UNIX+shell范例精解（第4版）代码

#!/bin/sh
# Scriptname: speller
# Purpose: Check and fix spelling errors in a file
exec < tmp                   # Opens the tmp file 
while read line              # Read from the tmp file
do
	echo $line
	echo  -n  "Is this word correct? [Y/N] "
	read answer < /dev/tty   # Read from the terminal
	case  "$answer" in
	[Yy]*) 
	     continue;;
	*) 
	     echo  "What is the correct spelling? "
	     read word < /dev/tty
	     sed  "s/$line/$word/g" tmp > error
	     mv error tmp
	     echo $line has been changed to $word.
	esac
done