how to change a character in all documents

Wednesday, 26 January 2011 04:11


Dir.chdir("D:\\change_characters")        #changes the current working directory

getFiles=`dir /B *.TXT`                   #passes this command to the shell

fileList=getFiles.split(/\n/)             #creates an Array separated with \n

fileList.length.times{                    #opening of a block

	fileName=fileList.pop             #pops the first item out of the Array

#############################

	fileA=File.open(fileName,"r")    #opens the file thats in fileName as read only

	doc=fileA.read                   #reads the file into the doc string

	fileA.close                      #closes the file

#############################

	doc.gsub!(/a/,"@")               #replaces "a" with "@" in the doc string

#############################

	fileB=File.open(fileName,"w")    #deletes and opens a the file in fileName

	fileB.write(doc)                 #writes the contents of doc into the file

	fileB.close                      #closes the file

#############################

}                                         #closing block