Visit Our UNIX and Linux User Community


Help with egrep command


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Help with egrep command
# 1  
Old 09-01-2009
Help with egrep command

Hi All,

I am using egrep command to search one pattern. Following is the command i am using

egrep -i "ACL*" filename

but its also giving me the records which do not contain ACL.
any help would be appreciated.

Regards,
Sam
# 2  
Old 09-01-2009
Hi.

ACL* means AC and zero or more L's.

Because you've used the -i (ignore case) it will find any combination of ac, aC Ac, AC, etc. with or without an L (or l)

If you want to find ACL followed by anything, use ACL.*

(and I would use grep -E instead of egrep)
# 3  
Old 09-01-2009
The regex pattern you have 'ACL*' will match any substring containing ACL with the L char. repeated from 0 (none) to ...wel, a lot.

AC or ACLL ACLLLL etc...
# 4  
Old 09-02-2009
if u r looking for exact search of ACL u can try this

egrep -i "^ACL$" <inputfile>

Previous Thread | Next Thread
Test Your Knowledge in Computers #626
Difficulty: Easy
False === 0.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Egrep -v command not filtering correctly

Hello guys, I have an issue when trying to do an egrep -v on a file, let me show you. I want to filter the last column as to where it filters out the columns with asterisks and zeros ( * and 0 ) it is working properly up to a certain point where I have a value of '10000' which is also getting... (3 Replies)
Discussion started by: evergreen
3 Replies

2. UNIX for Beginners Questions & Answers

Egrep command is not working for me

my file is below REREGISTER is something to Failed to create the request Failed to create the request in not easy I know how REREGISTERcommand i run is egrep 'REREGISTER|Failed|to|create|the|request' test1 expected output REREGISTER is something to Failed to create the request i should... (2 Replies)
Discussion started by: mirwasim
2 Replies

3. UNIX for Advanced & Expert Users

Need to use fgrep and egrep in a single command

I have a source file which is something like : C/*M/ / ***HMACCT ** MONTH FOR CURRENT MINUS 14 CAL DAY C/*D/ / ***HMACCT ** DAY FOR CURRENT MINUS 14 CAL DAY C/*X/ / ***HMACCT ** CENTURY FOR CURRENT MINUS 14 CAL DAY C/*Y/ / ***HMACCT **... (5 Replies)
Discussion started by: gotamp
5 Replies

4. Shell Programming and Scripting

help in egrep command in file

Hi Guys, I need hepl on egrep commnad I have one file and i need grep only specific lines.. EX: 2012-04-01 02:15:14 w 2012-04-01 02:15:14 w 2012-04-01 02:15:14 w 2012-10-26 02:15:14 w 2012-04-01 02:15:14 w 2012-10-26 02:15:14 w 2012-10-26 02:15:14 w 2012-10-26 03:18:56 M... (1 Reply)
Discussion started by: asavaliya
1 Replies

5. Shell Programming and Scripting

Help with egrep command

Hello folks, Here's how my current egrep command works: egrep "NY|DC|LA|VA|MD" state_data.txt I am planning to use a file to enter all allowable state values like say a new state_names.lookup with the following data: NY DC LA VA MD egrep "`cat state_names.lookup`"... (6 Replies)
Discussion started by: calredd
6 Replies

6. Shell Programming and Scripting

Help with egrep command

cat /tmp/inventory.csv|grep AARP|egrep -v "T11|12.4\(7\)" how do i exclude in addition to above 12.4\(3\) I have tried adding this in i.e -v "T11|12.4\(7\)|12.4\(3\)" but it did not work (3 Replies)
Discussion started by: slashbash
3 Replies

7. Shell Programming and Scripting

egrep command and order

Hi All, Here is my question. I have two files, file1.txt and file2.txt. I need the line number (index number) of file2.txt where the words in file1.txt appear. But they have to be in the same order as file1.txt. In example, file1.txt Z K A ... T file2.txt W A Q R (6 Replies)
Discussion started by: senayasma
6 Replies

8. Shell Programming and Scripting

egrep -w command by reading from file

Dear All, I want to get the rows from file1.txt whose first column is exactly as the numbers (not subset) from file1.txt. so, i have to read by line from file1.txt and search in file2.txt. So the first column of the output must be the same as the file1.txt. I used % egrep -w -f... (5 Replies)
Discussion started by: senayasma
5 Replies

9. Shell Programming and Scripting

Query regarding egrep command

Hi All, I am having a query regarding the usage of egrep command. i am having two unix environmanets in environment when i am using "egrep -f" it is working fine and other unix environment i am getting a syntax error. Please let me know if i need to set any environmane variables. ... (12 Replies)
Discussion started by: Sriram.Vedula53
12 Replies

10. Shell Programming and Scripting

egrep command

I'd like to grep a pattern of a version number as *_number.number.number number should be digit my grep is |egrep '^*++\.+' It works for V_3.2.1 or V _5.3.2 but not with V_43.6.543 !!!!! How can I specify any repetition of digit in the ? thanks, (4 Replies)
Discussion started by: annelisa
4 Replies

Featured Tech Videos