Tiny Core Linux

General TC => Programming & Scripting - Unofficial => Topic started by: fangis on March 23, 2014, 08:55:42 PM

Title: I need help from SED gurus
Post by: fangis on March 23, 2014, 08:55:42 PM

Hello friends,

I have searched the documentation but can't seem to make this work.
What I want to do is the following:
get the user to type a word
convert the spaces in this word to commas, and save it into a new variable

but when i use:
read var
i dont know how to make sed modify this var. Is it possible?
Thanks for the help, i appreciate it.

Title: Re: I need help from SED gurus
Post by: Jason W on March 23, 2014, 09:16:43 PM

var=`echo $var | sed 's: :,:g'`

Does that do what you need?

Title: Re: I need help from SED gurus
Post by: fangis on March 24, 2014, 11:36:09 AM

hi, thanks for the help.
No luck yet, i made the following script:

#!/bin/sh
echo "please type the string:"
read var
var=echo $var | sed 's::,:g'
echo "your converted string: $var"


this way gave no results, i typed, this is a test, gives:
line 5:this: not found
your converted string: this is a test

I also tried to use commas around echo, but it seems to not work
can you try the script?
thank you!
fangis

Title: Re: I need help from SED gurus
Post by: Rich on March 24, 2014, 12:53:20 PM

Hi fangis
You left out the back ticks usally found on the ~ key.
Try changing this:

Code: [Select]

var=echo $var | sed 's::,:g'To this:

Code: [Select]

var=`echo $var | sed 's: :,:g'`

Title: Re: I need help from SED gurus
Post by: gerald_clark on March 24, 2014, 02:07:08 PM

Or using tr:
var=`echo $VAR | tr " " ","`
or
var=$(echo $var | tr " " ",")

Title: Re: I need help from SED gurus
Post by: fangis on March 24, 2014, 04:38:45 PM

hey, thanks for the replies. It has worked! And I also did not know about this tr command so i will have a look. take care everyone.