Sponsored Content
Top Forums Shell Programming and Scripting Moving or copying first rows and last rows into another file Post 302841025 by rdcwayx on Tuesday 6th of August 2013 11:19:36 PM
Old 08-07-2013
Code:
head -1000 > output1
tail -1000 > output2

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Converting rows into multiple-rows

Hi every one; I have a file with 22 rows and 13 columns which includes floating numbers. I want to parse the file so that every five columns in the row would be a new record (row). For example, the first line in the old file should be converted into three lines with first two lines contain 5... (6 Replies)
Discussion started by: PHL
6 Replies

2. Shell Programming and Scripting

Deleting specific rows in large files having rows greater than 100000

Hi Guys, I need help in modifying a large text file containing more than 1-2 lakh rows of data using unix commands. I am quite new to the unix language the text file contains data in a pipe delimited format sdfsdfs sdfsdfsd START_ROW sdfsd|sdfsdfsd|sdfsdfasdf|sdfsadf|sdfasdf... (9 Replies)
Discussion started by: manish2009
9 Replies

3. Shell Programming and Scripting

delete rows in a file based on the rows of another file

I need to delete rows based on the number of lines in a different file, I have a piece of code with me working but when I merge with my C application, it doesnt work. sed '1,'\"`wc -l < /tmp/fileyyyy`\"'d' /tmp/fileA > /tmp/filexxxx Can anyone give me an alternate solution for the above (2 Replies)
Discussion started by: Muthuraj K
2 Replies

4. Shell Programming and Scripting

Remove 1st two rows and last 2 rows

Hi All, I need to remove 1st 2 line from head and last 2 line from last. I thought it would be possible by using the Head and tail command. But after i am using it is not possible by it. Example:Input file 1 2 3 4 5 Example: Output file 3 But my head and tail command are not... (12 Replies)
Discussion started by: kam786sim
12 Replies

5. Shell Programming and Scripting

Split single rows to multiple rows ..

Hi pls help me out to short out this problem rm PAB113_011.out rm: PAB113_011.out: override protection 644 (yes/no)? n If i give y it remove the file. But i added the rm command as a part of ksh file and i tried to remove the file. Its not removing and the the file prompting as... (7 Replies)
Discussion started by: sri_aue
7 Replies

6. UNIX for Dummies Questions & Answers

moving columns to alternating rows

Hello, I have a space delimited file like this: AAA BBB CCC DDD EEE FFF GGG HHH III And I would like to change it to the following (including the plus signs): AAA BBB + CCC DDD EEE + FFF GGG HHH (2 Replies)
Discussion started by: blakers
2 Replies

7. Shell Programming and Scripting

Copying down first row in to all the below blank rows in a .csv file

Hi All, I have many of files(.csv) of the format given below. Date,Name,Location 04/02/2012,A,India ,B,China ,C,USA Like this I have 1000's of rows and many columns in all my files. I need a shell script to copy down the Date(in this example column1) to the next 2 rows below(in the... (8 Replies)
Discussion started by: ks_reddy
8 Replies

8. UNIX for Dummies Questions & Answers

merging rows into new file based on rows and first column

I have 2 files, file01= 7 columns, row unknown (but few) file02= 7 columns, row unknown (but many) now I want to create an output with the first field that is shared in both of them and then subtract the results from the rest of the fields and print there e.g. file 01 James|0|50|25|10|50|30... (1 Reply)
Discussion started by: A-V
1 Replies

9. Shell Programming and Scripting

Merging rows using two common rows.

Hi.. My requirement is simple but unable to get that.. File 1 : 3 415 A G 4 421 G . 39 421 G A 2 421 G A,C 41 427 A . 4 427 A C 42 436 G . 3 436 G C 43 445 C . 2 445 C T 41 447 A . Output (4 Replies)
Discussion started by: empyrean
4 Replies

10. UNIX for Beginners Questions & Answers

Reading and copying a selected rows

Dear All, I have a data file input.res like below. (Only six column shown here for example.) Sequence of first column starting from 1 to 148. Input file 1 Q0 9_August_2014_Entertainment2 0 20.14967806339729 BM25b1.0 1 Q0 13_October_2012_Page323 1 20.134224346765738 BM25b1.0 1 Q0... (2 Replies)
Discussion started by: imranrasheedamu
2 Replies
HEAD(1) 							   User Commands							   HEAD(1)

NAME
head - output the first part of files SYNOPSIS
head [OPTION]... [FILE]... DESCRIPTION
Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name. With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -c, --bytes=[-]N print the first N bytes of each file; with the leading `-', print all but the last N bytes of each file -n, --lines=[-]N print the first N lines instead of the first 10; with the leading `-', print all but the last N lines of each file -q, --quiet, --silent never print headers giving file names -v, --verbose always print headers giving file names --help display this help and exit --version output version information and exit N may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P, E, Z, Y. AUTHOR
Written by David MacKenzie and Jim Meyering. REPORTING BUGS
Report head bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for head is maintained as a Texinfo manual. If the info and head programs are properly installed at your site, the command info coreutils 'head invocation' should give you access to the complete manual. GNU coreutils 7.1 July 2010 HEAD(1)
All times are GMT -4. The time now is 12:35 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy