Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Extract rows from file based on row numbers stored in another file
Top Forums Shell Programming and Scripting Extract rows from file based on row numbers stored in another file Post 302562083 by Chubler_XL on Wednesday 5th of October 2011 10:31:01 PM
Old 10-05-2011
If you want to stick to bash script you could do something like:

Code:
while read i
do
     sed -n "$i p" rows.dat > $i.num
done < numbers.txt

However, rdcwayx's solution it more efficient as the above runs sed once for each number in numbers.txt.
This User Gave Thanks to Chubler_XL For This Post:
shoaibjameel123
 

9 More Discussions You Might Find Interesting

1. 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

2. Shell Programming and Scripting

Delete rows based on line numbers in a file

I have to find the number of rows in a file and delete those many rows in another file. For example, if I have 3 rows in a file A, i have to delete first 3 rows in anothe file B, I have the code, it works as standalone, when I merge this with m application (c with unix), it doesnt work. ... (2 Replies)
Discussion started by: Muthuraj K
2 Replies

3. Shell Programming and Scripting

How to fetch rows based on line numbers or based on the beginning of a word?

I have a file which will have rows like shown below, ST*820*316054716 RMR*IV*11333331009*PO*40.31 REF*IV*22234441009*xsss471-2762 DTM*003*091016 ENT*000006 RMR*IV*2222234444*PO*239.91 REF*IV*1234445451009*LJhjlkhkj471-2762 </SPAN> DTM*003* 091016 RMR*IV*2223344441009*PO*40.31... (18 Replies)
Discussion started by: Muthuraj K
18 Replies

4. Shell Programming and Scripting

Insert rows based on line numbers

Can I insert rows based on line numbers. Say If I need to insert 1 or more rows in a file from line number 10. Can I do that in UNIX I have a file something like A B C D E F After row C, I wanted to add 2 records as X and Y. I have the line number after C as my reference. Can I... (2 Replies)
Discussion started by: Muthuraj K
2 Replies

5. 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

6. UNIX for Dummies Questions & Answers

Assigning rank to rows of numbers based on the last column

I have a tab delimited text file that looks like the following: ERBB3 0.00097 IL31RA 0.000972 SETD5 0.000972 MCART1 0.000973 CENPJ 0.000973 FNDC6 0.000974 I want to assign a number to each row based on the value in the last column (in the order of increasing value so that the first row... (3 Replies)
Discussion started by: evelibertine
3 Replies

7. 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

8. UNIX for Dummies Questions & Answers

Adding a column to a text file with row numbers

Hi, I would like to add a new column containing the row numbers to a text file. How do I go about doing that? Thanks! Example input: A X B Y C D Output: A X 1 B Y 2 C D 3 (5 Replies)
Discussion started by: evelibertine
5 Replies

9. Shell Programming and Scripting

Splitting single row into multiple rows based on for every 10 digits of last field of the row

Hi ALL, We have requirement in a file, i have multiple rows. Example below: Input file rows 01,1,102319,0,0,70,26,U,1,331,000000113200000011920000001212 01,1,102319,0,1,80,20,U,1,241,00000059420000006021 I need my output file should be as mentioned below. Last field should split for... (4 Replies)
Discussion started by: kotra
4 Replies

LEARN ABOUT REDHAT

dos2unix

dos2unix(1)						      General Commands Manual						       dos2unix(1)

NAME

       dos2unix - DOS/MAC to UNIX text file format converter

SYNOPSYS

       dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...]

       Options:

       [-hkqV] [--help] [--keepdate] [--quiet] [--version]

DESCRIPTION

       This manual page documents dos2unix, the program that converts plain text files in DOS/MAC format to UNIX format.

OPTIONS

       The following options are available:

       -h --help
	      Print online help.

       -k --keepdate
	      Keep the date stamp of output file same as input file.

       -q --quiet
	      Quiet mode. Suppress all warning and messages.

       -V --version
	      Prints version information.

       -c --convmode convmode
	      Sets conversion mode. Simulates dos2unix under SunOS.

       -o --oldfile file ...
	      Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.

       -n --newfile infile outfile ...
	      New  file  mode.	Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be
	      used or you WILL lost your files.

EXAMPLES

       Get input from stdin and write output to stdout.

	      dos2unix

       Convert and replace a.txt. Convert and replace b.txt.

	      dos2unix a.txt b.txt

	      dos2unix -o a.txt b.txt

       Convert and replace a.txt in ASCII conversion mode.  Convert and replace b.txt in ISO conversion mode.  Convert	c.txt  from  Mac  to  Unix
       ascii format.

	      dos2unix a.txt -c iso b.txt

	      dos2unix -c ascii a.txt -c iso b.txt

	      dos2unix -c mac a.txt b.txt

       Convert and replace a.txt while keeping original date stamp.

	      dos2unix -k a.txt

	      dos2unix -k -o a.txt

       Convert a.txt and write to e.txt.

	      dos2unix -n a.txt e.txt

       Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt.

	      dos2unix -k -n a.txt e.txt

       Convert and replace a.txt. Convert b.txt and write to e.txt.

	      dos2unix a.txt -n b.txt e.txt

	      dos2unix -o a.txt -n b.txt e.txt

       Convert c.txt and write to e.txt. Convert and replace a.txt.  Convert and replace b.txt. Convert d.txt and write to f.txt.

	      dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt

DIAGNOSTICS

BUGS

       The program does not work properly under MSDOS in stdio processing mode.  If you know why is that so, please tell me.

AUTHORS

       Benjamin Lin - <blin@socs.uts.edu.au>

       Bernd Johannes Wuebben (mac2unix mode) <wuebben@kde.org>

MISCELLANY

       Tested environment:

	      Linux 1.2.0 with GNU C 2.5.8

	      SunOS 4.1.3 with GNU C 2.6.3

	      MS-DOS 6.20 with Borland C++ 4.02

       Suggestions and bug reports are welcome.

SEE ALSO

       unix2dos(1) mac2unix(1)

1995.03.31							   dos2unix v3.0						       dos2unix(1)
All times are GMT -4. The time now is 01:37 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy