1. Shell Programming and Scripting

I have a question. Take the following statement awk -F\| '{print $21}' testfile | sed 's/\//\\/g' > newfile This will grab the 21st column of a | delimited text file, replace the forward slashes "/" , with back slashes "\", and redirect the output newfile. Now, how do I get the output... (4 Replies)

2. Shell Programming and Scripting

Hi, Below is a small piece of my Korn shell script - what i am trying to do is substitute all occurrences of the word given by the ${src} parameter with the word given by the ${dest} parameter in that particular textfile. But i get the errors below... for i in `ls... (19 Replies)

3. Shell Programming and Scripting

Hi, $ echo 1 titi | sed -e "s/1/$(echo \&)/" 1 titi but $ echo 1 titi | sed -e "s/1/$(date \&)/" date: invalid date `&' titi how can i do for handle '\&' with date ? Thx (7 Replies)

4. Shell Programming and Scripting

How do I grab the first 10 characters of a line and append it to another empty file? (7 Replies)

5. Shell Programming and Scripting

Hi. I'm going to learn scripting and i have the following topics on the list: sed, awk, shell scripting, perl. My question is, whehter i should learn sed and awk? Aren't this tools outdated? Although i see that GNU upgrade it's versions of these tools from time to time. And, the next... (9 Replies)

6. Shell Programming and Scripting

Hello everyone, i wonder if someone could give me an advice regarding the following problem using sed. Given ist a structure as shown below: <aaa>text1<b>text2</b>text3<c>text4</c>text5</aaa> Now I want to change the outer tag from "aaa" to "new" and replace all tags inside the outer tags... (4 Replies)

7. UNIX for Dummies Questions & Answers

Hi, Can anyone let me know the difference between awk and sed utilities in Unix? Many thanks. (2 Replies)

8. Shell Programming and Scripting

I am searching for a specific pattern and replacing with ( ) for matched pattern .I am not getting the expected result ..... Here is the file cat test cool change Frinto Francis Frinto cool change Attitude /usr/bin sed 's/*/( & )/' test ( cool ) ( change ) ( )Frinto Francis... (2 Replies)

9. UNIX for Beginners Questions & Answers

Hi, I can't seem to understand what the sed and & do.. Why is the set of numbers appear twice ? how the command really work ? echo "123 abc" | sed 's/*/& www &/' Output: 123 www 123 abc (3 Replies)

10. UNIX for Beginners Questions & Answers

I want to know the working of & here step by step using sed command. (1 Reply)