Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

sort a file in reverse order

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting sort a file in reverse order
# 1  
Old 09-21-2005
sort a file in reverse order
I a file with log entries... I want to sort it so that the last line in the file is first and the first line is last..

eg.
Sample file
1
h
a
f
8
6

After sort should look like
6
8
f
a
h
1


Is this possible?
# 2  
Old 09-21-2005
MySQL
Code:
tail -r filename

rishi Smilie
# 3  
Old 09-21-2005
Its always something simple ehh.. I was playing around with sort -r but that was doing too much sorting..

Thanks for that!!!
# 4  
Old 09-21-2005
Yet another way.

The actual sample file.
Code:
$ cat sample.file 
1
h
a
f
8
6

The reversed sample.file
Code:
$ tac sample.file 
6
8
f
a
h
1

vino
# 5  
Old 09-21-2005
I think its better to use sort itself...

sort -r <filename>

I didn't c an option " -r " with tail...
# 6  
Old 09-21-2005
Power
hey vino,
tac is not available under solaris 5.8 Smilie


rishi
# 7  
Old 09-21-2005
And as RishiPahuja has told, tail also works but with -n option

Code : tail -n filename
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to create a summary file of all files in a directory sorted in reverse alphabetical order.?

I have an interactive script which works terrific at processing a folder of unsorted files into new directories. I am wondering how I could modify my script so that( upon execution) it provides an additional labelled summary file on my desktop that lists all of the files in each directory that... (4 Replies)
Discussion started by: Braveheart
4 Replies

2. Shell Programming and Scripting

Sorting a html file with an external sort order

I am working on a web-concordance of Old Avestan and my concordance has produced a HTML file The sort deployed by the HTML file is not something which we normally use. I have tried my best to force a sort within the concordance itself, but the sort order does not work. I am giving below the sort... (6 Replies)
Discussion started by: gimley
6 Replies

3. UNIX for Dummies Questions & Answers

[Solved] Reverse the order of a list of file names (but not sort them alphabetically or numerically)

Hello all, I have a list of file names in a text document where each file name consists of 4 letters and 3 numbers (for example MACR119). There are 48 file names in the document (they are not in alphabetical or numerical order). I would like to reorder the list of names so that the 48th name is... (3 Replies)
Discussion started by: MDeBiasse
3 Replies

4. Shell Programming and Scripting

Reverse sort on delimited chunks within a file

Hello, I have a large file in which data of names is sorted according to their homographs. The database has the following structure:Each set of homographs with their corresponding equivalents in Devanagari is separated out from the next set by a hard return. An example will make this... (12 Replies)
Discussion started by: gimley
12 Replies

5. UNIX for Dummies Questions & Answers

How can I list the file under a directory both in alphabetical and in reverse alphabetical order?

How can I list the file under current directory both in alphabetical and in reverse alphabetical order? (1 Reply)
Discussion started by: g.ashok
1 Replies

6. Shell Programming and Scripting

reverse sort file

Hi all I am trying to numerically reverse sort a file but I seem to be having trouble. Example of file contents: text1,1 text2,-1 text3,0 I can sort using sort -k 2n -t, filename without any problems. However I want my results in descending order but using -r in my command... (2 Replies)
Discussion started by: pxy2d1
2 Replies

7. Shell Programming and Scripting

Conditional reverse of certain file line order

Hi I am brand new to programming, I dont know how to go about this task, or what language is best for this...If there is an easy solution in different languages, I would love to see them. I want to learn about the steps to take on this, so Please put in comments where code is used. I believe in... (9 Replies)
Discussion started by: perlrookie
9 Replies

8. Shell Programming and Scripting

creating a file in reverse order of another file

Hi, I have a requirement where i need to write a script to create the new file from the given input file with the data in reverse order (bottom to top) Sample data: Input File-------------- Java VB Oracle Teradata Informatica Output file:----------------- Informatica Teradata Oracle... (3 Replies)
Discussion started by: srilaxmi
3 Replies

9. UNIX for Dummies Questions & Answers

sort -reverse order

I need to sort the particular column only in reverse order how i can give it.. if i give the -r option the whole file is getting sorted in reverse order. 1st 2nd col 3rd C col 4th col 5th col ------------------------------------------- C... (7 Replies)
Discussion started by: sivakumar.rj
7 Replies

10. Shell Programming and Scripting

read line in reverse order from file

dear all i want to read 5th no of line from last line of file. kindly suggest me possible ways. rgds jaydeep (2 Replies)
Discussion started by: jaydeep_sadaria
2 Replies
Login or Register to Ask a Question