Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Copy only the initial 10 lines from a file to another

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Copy only the initial 10 lines from a file to another
# 1  
Old 11-02-2007
MySQL Copy only the initial 10 lines from a file to another
Hi all,

I'm new to shell scripting.
I want to copy initial few lines(say first 10 lines) from a file to another file.
There is no "head" command in our embedded system.
sed & awk is there which I believe will do that, but I dont know how to.
This is linux 2.6 (embedded)

So please help me.

Thanks
Jay
Last edited by jockey007; 11-02-2007 at 04:27 AM..
# 2  
Old 11-02-2007
sed -n '1,10p' file1 > file2
# 3  
Old 11-02-2007
Quote:
Originally Posted by jockey007
Hi all,

I'm new to shell scripting.
I want to copy initial few lines(say first 10 lines) from a file to another file.
There is no "head" command in our embedded system.
sed & awk is there which I believe will do that, but I dont know how to.
This is linux 2.6 (embedded)

So please help me.

Thanks
Jay
Try this..

sed -n '1,10p' filename > newfile

Regards,
Chella
This User Gave Thanks to chella For This Post:
# 4  
Old 11-02-2007
Code:
sed -e "10q" filename > newfile

# 5  
Old 11-02-2007
Thanks
thanks a lot for help.
Just one more query.

How to copy the whole file, except last N lines to another file?
# 6  
Old 11-02-2007
Code:
cnt=`wc -l < file`
awk -v var=$cnt 'NR <= var - 5' file

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Copy lines from x to y to another file

OS : RHEL 7.2 Shell : bash I have a file which has lines like below I want to copy from 2nd line to the 6th line and copy(redirect) those lines to another file. $ cat patterns.txt hello world hello asia hello europe hello africa hello america hello antartica hello... (9 Replies)
Discussion started by: omega3
9 Replies

2. UNIX for Beginners Questions & Answers

How to copy only some lines from very big file?

Dear all, I have stuck with this problem for some days. I have a very big file, this file can not open by vi command. There are 200 loops in this file, in each loop will have one line like this: GWA quasiparticle energy with Z factor (eV) And I need 98 lines next after this line. Is... (6 Replies)
Discussion started by: phamnu
6 Replies

3. Shell Programming and Scripting

How to copy lines that starts with either 3 or 4 into new file?

Hi Guys, I have an awk script that would search the input file for line that starts with a number 3 and copies into a new text file. I want to extend this script to find the lines that either starts with 3 or a or b and copy all those lines into the new file. Here is what I have so far:... (1 Reply)
Discussion started by: Amith821
1 Replies

4. Shell Programming and Scripting

copy range of lines in a file based on keywords from another file

Hi Guys, I have the following problem. I have original file (org.txt) that looks like this module v_1(.....) //arbitrary number of text lines endmodule module v_2(....) //arbitrary number of text lines endmodule module v_3(...) //arbitrary number of text lines endmodule module... (6 Replies)
Discussion started by: kaaliakahn
6 Replies

5. Shell Programming and Scripting

Copy selective lines from text file

Hello, I have a text file which I need to check for presence of certain tags, and then copy a subsequent portion of text into another file. The tag matching canbe done with Grep but I do not know how to copy selective lines from one file to another. Is it possible do that? I checked up some... (8 Replies)
Discussion started by: ajayram
8 Replies

6. Shell Programming and Scripting

Grep: Copy all lines from log file into new file

Hello everyone. I have a log file that contains multiple domains: www.thisdomain.com agent.thisdomain.com that.thisdomain.com I need to copy all of the lines that contain "www.thisdomain.com" from the log and output them into a new file. I've tried everything with little luck. Please help... (3 Replies)
Discussion started by: aberli
3 Replies

7. Shell Programming and Scripting

Script to capture new lines in a file and copy it to new file

Hi All, I have a file that gives me new line/output every 5 minutes. I need to create a script that capture new line/output besides "IN CRON_STATUS", in this case the new output is "begin ------ cron_status.sh - -----------". I want this script to capture the line starting from "begin ------... (0 Replies)
Discussion started by: fara_aris
0 Replies

8. UNIX for Advanced & Expert Users

Copy lines from a log file based on timestamp

how to copy lines from a log file based on timestamp. INFO (RbrProcessFlifoEventSessionEJB.java:processFlight:274) - E_20080521_110754_967: rbrAciInfoObjects listing complete! INFO (RbrPnrProcessEventSessionEJB.java:processFlight:197) - Event Seq: 1647575217; Carrier: UA; Flt#: 0106; Origin:... (1 Reply)
Discussion started by: ranjiadmin
1 Replies

9. UNIX for Dummies Questions & Answers

copy lines from opne file to another

Hi all, I'm new to shell scripting. I want to copy the first N lines from a file to another file. Can someone please tell me how this can be done. Thanks Himi (2 Replies)
Discussion started by: HIMANI
2 Replies

10. Shell Programming and Scripting

How to copy multiple lines from a file to another using AWK?

Hi, I have a abc.txt file. In this file there is a SQL query which Iwant to copy and print it on another file.The query (for eg) is written like this: SELECT field1, field2, field3 from table1,table2 where <conditions> END I want to copy this query to another... (3 Replies)
Discussion started by: jisha
3 Replies
Login or Register to Ask a Question