Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

sed help,to replace the last character

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting sed help,to replace the last character
# 1  
Old 08-10-2010
sed help,to replace the last character
cat input.txt
Code:
agsbdafgd
ertebrtreter
ahrbrwerg

The last character of a line that does not start with a would be changed to Z.
Final output:
Code:
agsbdafgd
ertebrtreteZ
ahrbrwerg

Can anyone post the sed command to do that?
# 2  
Old 08-10-2010
If awk is an option, try this
Code:
awk '/^[^a]/ { sub(/.$/,"Z"); print; next } { print }' inputfile

or this
Code:
awk '{ if ($0 ~ /^[^a]/) sub(/.$/,"Z"); print}' inputfile

# 3  
Old 08-10-2010
Hi

Code:
sed '/^a/!s/.$/Z/' file

Guru.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed Character match and replace

Hello All I am struck in the issue which I want to share with all of you. What I am trying to do is For every line in a file I have to replace a particular character from the given character in a file For Example Suppose the data is 1111x2222 1111x2222 2222y3333 1111x2222 I... (4 Replies)
Discussion started by: adisky123
4 Replies

2. Shell Programming and Scripting

How to replace special character using sed?

How can I replace the follong text including to number 7000? cat tmp0.txt Winston (UK) Wong I would the 7000 to replace Winston (UK) Wong. I fail with method below: sed ' s /Winston\(UK\)Wong/7000 tmp0.txt' (1 Reply)
Discussion started by: vivien_chu
1 Replies

3. Shell Programming and Scripting

[Solved] sed : last character replace

Hi all , I have to write a shell script that takes a number as input , like 123 and the output will be 6 ,i.e the output will be the sum of digits of the input. I have an idea as follows, echo "123"|fold -1|tr '\n' '+'|bc But the problem is after " echo "123"|fold -1|tr '\n' '+' "... (5 Replies)
Discussion started by: M.Choudhury
5 Replies

4. Shell Programming and Scripting

How do I replace a unicode character using sed

I have a unicode character {Unicode: 0x1C} in my file and I need to replace it with a blank. How would a sed command look like? cat file1 | sed "s/(//g;" > file2 Is X28 the right value for this Unicode character?? (4 Replies)
Discussion started by: Hangman2
4 Replies

5. Shell Programming and Scripting

how to replace the special character with another using SED

I have the replace the pattern in the file , ); to ); Could someone please help me to get this command. (2 Replies)
Discussion started by: mohan.bit
2 Replies

6. Shell Programming and Scripting

sed special character replace

I need to do the following: text in the format of: ADDRESS=abcd123:1111 - abcd123:1111 is different on every system. replace with: ADDRESS=localhost:2222 sed 's/ADDRESS=<What do I use here?>/ADDRESS=localhost:2222/g' Everything I've tried ends up with: ... (3 Replies)
Discussion started by: toor13
3 Replies

7. Shell Programming and Scripting

how to replace specific character , if possible using sed

My script is extracting data from SQl session, however sometimes the result contains one or multiple space after/before any numerical value. e,g . "123","1 34","1 3 45", "43 5" How to remove these unwanted spaces..so that I can get the following result : "123","134",1345","435" (1 Reply)
Discussion started by: mady135
1 Replies

8. Shell Programming and Scripting

In Sed how can I replace starting from the 7th character to the 15th character.

Hi All, Was wondering how I can do the following.... I have a String as follows "ACCTRL000005022RRWDKKEEDKDD...." This string can be in a file called tail.out or in a Variable called $VAR2 Now I have another variable called $VAR1="000004785" (9 bytes long), I need the content of... (5 Replies)
Discussion started by: mohullah
5 Replies

9. Shell Programming and Scripting

Sed Replace a repeating character

I have a text file and every line ends in |^ |^^ |^^^ |^^^^ I need to use sed to make all lines end it |^ regardless of the amount of carrots. The code i was using is: cat FILE | sed 's/\^\^\^/\^/g' But then they threw that curveball at me. Also is there a way to... (2 Replies)
Discussion started by: insania
2 Replies

10. Shell Programming and Scripting

replace first character of string sed

I want to change the first/or any character of a string to upper-case: String: test Desired results: Test or tEst or teSt or tesT thanks (6 Replies)
Discussion started by: prkfriryce
6 Replies
Login or Register to Ask a Question