grep or sed. How to remove certain characters


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting grep or sed. How to remove certain characters
# 8  
Old 07-27-2010
Thanks for the help everyone. I got this part done. Lets see how I do with my next mission.
# 9  
Old 07-27-2010
Try this also.
Code:
echo 123-456-7890 | rev | cut -c 1-4| rev

# 10  
Old 07-27-2010
Quote:
Originally Posted by Jairaj
Try this also.
Code:
echo 123-456-7890 | rev | cut -c 1-4| rev

Not the most efficient solution.

Smilie
# 11  
Old 07-27-2010
Code:
!/bin/bash
while read -r LINE
do
  echo "${LINE:(-4)}"
done <"file"

This User Gave Thanks to kurumi For This Post:
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep to remove and add specified characters

I have the following type of 2 column file: motility - role - supplementation - age b ancestry b purity b recommendation b serenity b unease b carving f expansion f I would like to print only certain sections of the file depending on the value of the second column. For instance,... (6 Replies)
Discussion started by: owwow14
6 Replies

2. Shell Programming and Scripting

Grep to remove non-ASCII characters

I have been having an encoding problem that I need to solve. I have an 4-column tab-separated file: I need to remove all of the lines that contain the string 'vis-à-vis' achiever-n vis-à-vis+ns-j+vp oppose-v 1 achiever-n vis-à-vis+ns-the+vg assess-v 1 administrator-n ... (4 Replies)
Discussion started by: owwow14
4 Replies

3. Shell Programming and Scripting

How does this sed expression to remove non-alpha characters work?

Hello! I know that this expression gets rid of non-alphanumeric characters: sed 's///g' and I understand that it is replacing them with nothing - hence the '//'-, but I don't understand how it's doing it. It seems it's finding strings that begin with alphanumeric and replacing them with... (2 Replies)
Discussion started by: bgnersoon2be#1
2 Replies

4. Shell Programming and Scripting

Sed - remove special characters

Hi, I have a file with this line, it's always in the first line: I want to remove these special characters: ´╗┐ file1 ´╗┐\\bar\c$\test2\;3.348.118 Bytes;160 ;3 \\bar\c$\test\;35 Bytes;2 ;1 I want the same file to be only \\bar\c$\test2\;3.348.118 Bytes;160 ;3 \\bar\c$\test\;35... (4 Replies)
Discussion started by: nakaedu
4 Replies

5. Shell Programming and Scripting

Remove the Characters '[' and ']' with Sed

Hi, I am new to Sed and would like to know if it is possible to remove the characters . I have a couple of files with a keyword and would like to remove the substring. I am Using sed s/// but Its not working Thanks for your Support Andrew Borg (2 Replies)
Discussion started by: andrewborg
2 Replies

6. Shell Programming and Scripting

sed or tr to remove specific group of special characters

Hi, I have a input of the form: ..., word1, word2, word3... I want out put of the form word1, word2, word3 I tried echo '..., word1, word2, word3...' | tr -d '...,' but that takes out the commas in the middle too so I get word1 word2 word3 but I want the commas in the middle. ... (3 Replies)
Discussion started by: forumbaba
3 Replies

7. Shell Programming and Scripting

Sed or trim to remove non alphanumeric and alpha characters?

Hi All, I am new to Unix and trying to run some scripting on a linux box. I am trying to remove the non alphanumeric characters and alpha characters from the following line. <measResults>883250 869.898 86432.4 809875.22 804609 60023 59715 </measResults> Desired output is: 883250... (6 Replies)
Discussion started by: jackma
6 Replies

8. UNIX for Dummies Questions & Answers

sed command to remove characters help!

I am trying to analyse a large file of sequencing data, example of first 10 lines below, @HWUSI-EAS656_0044_FC:7:1:2447:1039#GCAATT/1 GNCTATGGCTTGCCGGGCTCAGGGAAGACAATCATAGCCATGAAAATCATGGAAAAGATCAGAAAAACATTTCAA +HWUSI-EAS656_0044_FC:7:1:2447:1039#GCAATT/1... (1 Reply)
Discussion started by: Adeleh
1 Replies

9. Shell Programming and Scripting

sed: remove characters between and including 2 strings

I have the following line: 4/23/2010 0:00:38.000: Copying $$3MSYDDC02$I would like to use sed (or similiar) to remove everthing between and including $ that appears in the line so it ends up like this. 4/23/2010 0:00:38.000: Copying 3MSYDDC02I have been trying these but i'm really just... (5 Replies)
Discussion started by: jelloir
5 Replies

10. Shell Programming and Scripting

sed to remove last 2 characters of txt file

sed 's/^..//' file1.txt > file2.txt this will remove the first two characters of each line of a text file, what sed command will remove the last two characters? This is a similar post to my other....sry if I'm being lazy.... I need a file like this (same as last post) >cat file1.txt 10081551... (1 Reply)
Discussion started by: ajp7701
1 Replies
Login or Register to Ask a Question