Hi need help in shell script

arunprasadlv · #1 (**permalink**) 03-30-04, 04:34

Hi
I want to replace a perticular word say "Console" with "DEBUG" present in the file.The word may appear any number of times in the file.

I tried to solve the problem using tr command.

tr "$wordtosearch" "$wordtoreplace" < $Filename| cat > $Filename

But it is not giving the output which i want.

Pls reply back Immediately.

Regds,
Arun

aigles · #2 (**permalink**) 03-30-04, 08:05

The tr command deletes or substitutes characters from standard input and writes the result to standard output.

If you execute the command "tr 'Console' 'DEBUG'", you substitute characters 'C','o','n','s','o','l','e' by 'D','E','B','U','G','',''
For example :
Input: La Console systeme
Output: La DGBUGle UyUteme

Use sed or perl:

Code:

sed "s/$wordtosearch/$wordtoreplace/g"  input_file > temp_file
mv temp_file input_file

perl -p -i -e "s/$wordtosearch/$wordtoreplace/g" input_file

If the character '/' is part of one of the two strings (search or replace), you must change it by another, for example :

Code:

sed "s!$wordtosearch!$wordtoreplace!g" input_file > output_file

arunprasadlv · #3 (**permalink**) 03-30-04, 08:55

Thanks Aigles for ur timely response.

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