How to select lines in unix matches a pattern at a particular position


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers How to select lines in unix matches a pattern at a particular position
# 1  
Old 10-06-2006
How to select lines in unix matches a pattern at a particular position

I have huge file. I want to copy the lines which have first character as 2 or 7, and also which has fist two characters as 90. I need only these records from file. How I can acheive this. Can somebody help me.....
# 2  
Old 10-06-2006
egrep "^[27]|^90" filename
# 3  
Old 10-06-2006
thanks. It worked...
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

find pattern matches in consecutive lines in certain fields-awk

I have a text file with many thousands of lines, a small sample of which looks like this: InputFile:PS002,003 D -1 5 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 6 6 -1 -1 -1 -1 0 509 0 PS002,003 PSQ 0 1 7 18 1 0 -1 1 1 3 -1 -1 ... (5 Replies)
Discussion started by: jvoot
5 Replies

2. Shell Programming and Scripting

awk Index to get position matches pattern

Input data as below (filetest.txt): 1|22 JAN Minimum Bal 20.00 | SAT 2|09 FEB Extract bal 168.00BR | REM 3|MIN BAL | LEX Output should be: ( If there is Date & Month in 2nd field of Input file, It should be seperated else blank. If There is Decimal OR Decimal & Currency in last of the 2nd... (7 Replies)
Discussion started by: JSKOBS
7 Replies

3. Shell Programming and Scripting

How do I select certain columns with matching pattern and rest of the lines?

I want to select 2nd, 3rd columns if line has "key3" and print rest of the lines as is. # This is my sample input key1="val1" key2="val2" key3="val3" key4="val4" some text some text some text some text key1="val1" key2="val2" key3="val3" key4="val4" some text some text some text some... (3 Replies)
Discussion started by: kchinnam
3 Replies

4. Shell Programming and Scripting

How to select lines randomly without replacement in UNIX?

Dear Folks I have one column of 15000 lines and want to select randomly 5000 of them in five different times without replacement. I am aware that command 'shuf' and 'sort -R' could select randomly those lines but I am not sure how could I avoid the replacement of selection line. Does anyone have... (10 Replies)
Discussion started by: sajmar
10 Replies

5. Shell Programming and Scripting

script to delete lines from a txt file if pattern matches

File 6 dbnawldb010-b office Memphis_Corp_SQL_Diff Memphis-Corp-SQL-Inc-Application-Backup 03/09/11 03:24:04 42 luigi-b IPNRemitDB Memphis_Corp_SQL_Diff Memphis-Corp-SQL-Inc-Application-Backup 03/10/11 00:41:36 6 ebs-sqldev1-b IPNTracking Memphis_Corp_SQL_Diff... (4 Replies)
Discussion started by: ajiwww
4 Replies

6. Shell Programming and Scripting

NAWK to remove lines that matches a specific pattern

Hi, I have requirement that I need to split my input file into two files based on a search pattern "abc" For eg. my input file has below content abc defgh zyx I need file 1 with abc and file2 with defgh zyx I can use grep command to acheive this. But with grep I need... (8 Replies)
Discussion started by: sbhuvana20
8 Replies

7. Shell Programming and Scripting

Merge lines if pattern matches in ksh

I have a file like this. Pls help me to solve this . (I should look for only Message : 111 and need to print the start time to end time Need to ignore other type of messages. Ex: if first message is 111 and second message is 000 or anything else then ignore the 2nd one and print start time of the... (1 Reply)
Discussion started by: mnjx
1 Replies

8. Shell Programming and Scripting

Merge lines from one file if pattern matches

I have one comma separated file (a.txt) with two or more records all matching except for the last column. I would like to merge all matching lines into one and consolidate the last column, separated by ":". Does anyone know of a way to do this easily? I've searched the forum but most talked... (6 Replies)
Discussion started by: giannicello
6 Replies

9. Shell Programming and Scripting

Displaying lines of a file where the second field matches a pattern

Howdy. I know this is most likely possible using sed or awk or grep, most likely a combination of them together, but how would one go about running a grep like command on a file where you only try to match your pattern to the second field in a line, space delimited? Example: You are... (3 Replies)
Discussion started by: LordJezoX
3 Replies

10. Shell Programming and Scripting

How to awk/sed/grep lines which contains a pattern at a given position

Dear friends I am new to linux and was trying to split some files userwise in our linux server. I have a data file of 156 continuous columns named ecscr final. I want the script to redirect all the lines containing a pattern of 7 digits to separate files. I was using grep to do that,... (2 Replies)
Discussion started by: anoopvraj
2 Replies
Login or Register to Ask a Question