1. UNIX for Dummies Questions & Answers

Does anyone know how to use grep/egrep to find a string that contains a null character? i.e.: the string looks like this: null0001nullN well I want to be able to : grep '0001N' is there a wildcard character or something that I can put in the grep to include the nulls? (3 Replies)

2. UNIX for Dummies Questions & Answers

How can I grep for a certain letter that only shows on the 3rd letter or character. ex: ASGHDY SHTYRD SDTYRD IGIKGD I only want the TY part of the 3rd character so output would only be SHTYRD and DDTYRD - I only want the TY on the 3rd character. THANKS (5 Replies)

3. UNIX for Dummies Questions & Answers

Hello people, I am trying to grep out a certain pattern from some files. The situation is like this: constantstring1<random data>constantstring2 I am using the following command (which clearly is not working!!!): datestring=<some date in YYYYMMDD format> searchstring=$datestring"*_xyz" grep... (2 Replies)

4. UNIX for Advanced & Expert Users

All, I am trying to grep "-----" from a test when i use this i am getting the below error. What is the reason for this ?????... How can i over come this ##) echo "----------------- test_sys_job -----------------" | grep "-----------------" grep: illegal option -- - grep: illegal... (6 Replies)

5. UNIX for Advanced & Expert Users

I am learning regex fundamentals on my own and when I try to use \w for characters (i.e. ), or \d for digits () it doesnt work even though I see in greps man page that \w should be the same as ]... ] and those types of syntactic character classes do work for me, its just the shorthand \w \W and... (4 Replies)

6. UNIX for Dummies Questions & Answers

Hello , this is my first topic cause I need your little help:( I got .txt file, and I want to find lines without letter 'a', so im writing: grep "" list.txt (list.txt is the file of course) and i have no idea why it's not working because it shows lines with a. (1 Reply)

7. UNIX for Dummies Questions & Answers

Hi, so I have a file containing many repetitions of the pattern block displayed below: >NM_13489075 ACGUGCUAGCUUAGCGA AGCUAGCUGAUCGAUGC ACGUAGCUAGCUGAUCG GAUCGA >NM_13489023 ACGUGCUAGCUUAGCGA AGCUAGCUGAUCGAUGC ACGUAGCUAGCUGAUCG GAAGUC I was wondering how to grep, for example, a... (5 Replies)

8. UNIX for Dummies Questions & Answers

Hello, Im trying check if character "æ" (alt+145) is included or not in some files. To do that I have written a scrip with vi that basically is a loop of all these compressed files and something like: zcat $file | grep æ >> logtocheck.out ; The problem is that æ is translated to something like... (3 Replies)

9. Shell Programming and Scripting

a='CASH$$A' /usr/xpg4/bin/grep -F "$a" *.txt It is not able to grep CASH$$A string as it contains special character $$. I also tried with /usr/xpg4/bin/grep -F '$a' *.txt but still not working. I have to assign CASH$$A to a variable and serach that variable..i dont want to search the... (8 Replies)

10. Shell Programming and Scripting

Hi, I have log : # cat log $ cat 4 2014092014 2014102014 2014112023 2014123014 2014010100 2014010101 2014010102 2014010103 2014010104 2014020123 2014020115 2014020116 (3 Replies)