Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Regular Expressions question

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Regular Expressions question
# 8  
Old 08-24-2010
Quote:
Originally Posted by aoussenko
The problem is that the line starts with the blanks...
Code:
$
$ awk '$1==1111' f0
  1111     1000  0011  0010  1000  1001  0100  1100  1101
$
$

tyler_durden
# 9  
Old 08-24-2010
Thansk a lot. The last two solutions work fine.
One side question, what "-nle" attributes stand for in Perl in the above solution?
# 10  
Old 08-24-2010
-e specify a string to execute as a script
-n loops over and does not print input.
-l strips newlines on input, and adds them on output. Use this option by default, unless the newlines need special handling

Hi experts,
Please correct me if i missed something
# 11  
Old 08-24-2010
Thansk a lot. The last two solutions work fine.
One side question, what "-nle" attributes stand for in Perl in the above solution?
# 12  
Old 08-24-2010
Quote:
Originally Posted by aoussenko
...what "-nle" attributes stand for in Perl ...
Just type in "perl --help"; it's very well explained in there.

Code:
$ perl --help
...
...
  -e program        one line of program (several -e's allowed, omit programfile)
  -l[octal]         enable line ending processing, specifies line terminator
  -n                assume "while (<>) { ... }" loop around program
...
...

tyler_durden
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Regular expressions

I need to pick a part of string lets stay started with specific character and end with specific character to replace using sed command the line is like this:my audio book 71-skhdfon1dufgjhgf8.wav' I want to move the characters beginning with - end before. I have different files with random... (2 Replies)
Discussion started by: XP_2600
2 Replies

2. Shell Programming and Scripting

Regular Expressions

I am new to shell scripts.Can u please help me on this req. test_user = "Arun" if echo "test_user is a word" else echo "test_user is not a word" (1 Reply)
Discussion started by: chandrababu
1 Replies

3. Shell Programming and Scripting

Regular expressions question

Hi guys I am new to pattern matching. Can somebody help me to understand the difference between two regular expressions: ls /t?/bin/emsm+().cmd and ls /t?/bin/emsm()+.cmd I know that "+" means "match 1 or more times". I am not sure how to read this expressions depending on the postion... (1 Reply)
Discussion started by: aoussenko
1 Replies

4. Shell Programming and Scripting

Help with regular expressions

I have a file that I'm trying to find all the cases of phone number extensions and deleting them. So input file looks like: abc x93825 def 13234 x52673 hello output looks like: abc def 13234 hello Basically delete lines that have 5 numbers following "x". I tried: x\(4) but it... (7 Replies)
Discussion started by: pxalpine
7 Replies

5. UNIX for Dummies Questions & Answers

Regular expressions

In regular expressions with grep(or egrep), ^ works if we want something in starting of line..but what if we write ^^^ or ^ for pattern matching??..Hope u all r familiar with regular expressions for pattern matching.. (1 Reply)
Discussion started by: aadi_uni
1 Replies

6. UNIX for Dummies Questions & Answers

regular expressions

how to find for a file whose name has all characters in uppercase after 'project'? I tried this: find . -name 'project**.pdf' ./projectABC.pdf ./projectABC123.pdf I want only ./projectABC.pdf What is the regular expression that correponds to "all characters are capital"? thanks (8 Replies)
Discussion started by: melanie_pfefer
8 Replies

7. Shell Programming and Scripting

regular expressions

Hello, Let say I have a string with content "Free 100%". How can extract only "100" using ksh? I would this machanism to work if instead of "100" there is any kind of combination of numbers(ex. "32", "1238", "1"). I want to get only the digits. I have written something like this: ... (4 Replies)
Discussion started by: whatever
4 Replies

8. UNIX for Dummies Questions & Answers

regular expressions

Hi Gurus, I need help with regular expressions. I want to create a regular expression which will take only alpha-numeric characters for 7 characters long and will throw out an error if longer than that. i tried various combinations but couldn't get it, please help me how to get it guys. ... (2 Replies)
Discussion started by: ragha81
2 Replies

9. Shell Programming and Scripting

Help with regular expressions

I have following content in the file CancelPolicyMultiLingual3=U|PC3|EN RestaurantInfoCode1=U|restID1|1 ..... I am trying to use following matching extression \|(+) to get this PC3|EN restID1|1 Obviously it does not work. Any ideas? (13 Replies)
Discussion started by: arushunter
13 Replies

10. Programming

regular expressions in c++

How do I use the regular expressions in c++? (2 Replies)
Discussion started by: szzz
2 Replies
Login or Register to Ask a Question