Visit Our UNIX and Linux User Community


converting rows into columns


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting converting rows into columns
# 1  
Old 01-02-2011
converting rows into columns

Hi,

I am trying to fetch some values from db and spooling the output to a file.

when i query the db for the values, i get the values in following format.

Code:
PC_1 wf_test1 Test
PC_2 wf_test2 Test
PC_3 wf_test3 Test

But my spool file was created in following format.

Code:
PC_1
wf_test1
Test

PC_2 
wf_test2
Test

PC_3
wf_test3
Test

Now i want to convert the format back to my db format in my spool file. Please let me know how to do it?

-Sam
# 2  
Old 01-02-2011
Not really rows to columns = twirling a matrix on the diagonal, so sed can pile them back up:
Code:
sed '
:loop
$b
N
s/\n$//
t
s/\n/ /
t loop

Narrative: sed:
  1. set a branch target named loop,
  2. if at EOF branch (to end = print and exit),
  3. get next line onto end of buffer,
  4. if it is a blank field, remove it,
  5. if we removed it, branch (to end = print, delete and start new line),
  6. make the line feed a space
  7. go back to loop (clearing the sustitute test flag at the same time).
# 3  
Old 01-02-2011
Code:
#!/usr/bin/perl
open(my $file, q[<], "file.txt") or die("$!");
while(my $line = <$file>)
{
	$line =~ s/\s+/\n/g;
	print $line, "\n";
}
close($file);

# 4  
Old 01-02-2011
Try...
Code:
paste - - - - < file1

# 5  
Old 01-03-2011
Quote:
Originally Posted by DGPickett
Not really rows to columns = twirling a matrix on the diagonal, so sed can pile them back up:
Code:
sed '
:loop
$b
N
s/\n$//
t
s/\n/ /
t loop

Narrative: sed:
  1. set a branch target named loop,
  2. if at EOF branch (to end = print and exit),
  3. get next line onto end of buffer,
  4. if it is a blank field, remove it,
  5. if we removed it, branch (to end = print, delete and start new line),
  6. make the line feed a space
  7. go back to loop (clearing the sustitute test flag at the same time).
Thanks for the explanation. suppose my spool filename is spool.out, where do I need to define this filename in the above code?
# 6  
Old 01-03-2011
Code:
awk '$1=$1' RS= file

# 7  
Old 01-03-2011
Quote:
Originally Posted by svajhala
Thanks for the explanation. suppose my spool filename is spool.out, where do I need to define this filename in the above code?
It's a transform, just add on the end: < input_file > output_file

The paste bit is cute, too. I try to use sed rather than know the varying options of many one-purpose commands, so my sed knowledge and expertise grows. The sed skills support command line and vi editing as well as grep and the other regex tools. Similar arguments apply to PERL, which is more a language than a scripting tool.

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Converting columns of text to rows, with blank lines

I've spent the past hour trying different things and googling for this solution and cannot find the answer. Found variations of this, but not this exact thing. I have the following text, which is the output from our mainframe. Each field is on a separate line, with a blank line between each... (7 Replies)
Discussion started by: lupin..the..3rd
7 Replies

2. Shell Programming and Scripting

Converting rows into columns

hi all I need a help ..I have a script that takes has command and its output is like below.. a b a v v a c I am assigning the above outputs to a variable .. <variable name> = <command output> problem here is when I echo the variable ..it gives me output like " a b... (3 Replies)
Discussion started by: shankarb
3 Replies

3. Shell Programming and Scripting

Compare 2 csv files by columns, then extract certain columns of matcing rows

Hi all, I'm pretty much a newbie to UNIX. I would appreciate any help with UNIX coding on comparing two large csv files (greater than 10 GB in size), and output a file with matching columns. I want to compare file1 and file2 by 'id' and 'chain' columns, then extract exact matching rows'... (5 Replies)
Discussion started by: bkane3
5 Replies

4. UNIX for Dummies Questions & Answers

Converting txt output to rows and columns and send report via mail.

Hi All, I would like to send below output in a tabular column ( xml or excel ) and send a mail. vinay unix anil sql vamsee java request to suggest a solution. (1 Reply)
Discussion started by: Girish19
1 Replies

5. UNIX for Dummies Questions & Answers

Converting Columns To Rows Sort Of

Hi I'm a UNIX awk and sed novice at best. I'm trying to creat a .csv file so it can be graphed in Excel. Tried various xargs, awk, sed and paste but just can't seem to get the data to line up. Not sure if this is beyond for a question in these forums. Any help would greatly be appreciated. Have... (4 Replies)
Discussion started by: jimmyf
4 Replies

6. Shell Programming and Scripting

Converting rows to columns in csv file

Hi, I have a requirement to convert rows into columns. data looks like: c1,c2,c3,.. r1,r2,r3,.. p1,p2,p3,.. and so on.. output shud be like this: c1,r1,p1,.. c2,r2,p2,.. c3,r3,p3,.. Thanks in advance, (12 Replies)
Discussion started by: Divya1987
12 Replies

7. Shell Programming and Scripting

Converting rows to columns using shell script

I have a script which converts rows to columns. file_name=$1 mailid=$2 #CREATE BACKUP OF ORIGINAL FILE #cp ${file_name}.xlsx ${file_name}_temp.xlsx #tr '\t' '|' < ${file_name}_temp.xlsx > ${file_name}_temp.csv #rm ${file_name}_temp.xlsx pivot_row=`head -1 ${file_name}` sed 1d... (3 Replies)
Discussion started by: andy538
3 Replies

8. UNIX for Dummies Questions & Answers

Converting columns into rows

Is there anyway to convert columns into raws using awk? (or any other command line):eek::eek::eek::eek::eek::eek::eek::eek::eek: (1 Reply)
Discussion started by: cosmologist
1 Replies

9. 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

10. Shell Programming and Scripting

how to converting rows to columns, bash

I have in file these words: @fraza1 = rw @fraza2 = r @fraza3 = r @fraza4 = r @fraza5 = r @fraza1 = r @fraza6 = r @fraza7 = r @fraza2 = r @fraza8 = r @fraza9 = r ... I would like so that: ,rw,@fraza1 ,r,@fraza2 (2 Replies)
Discussion started by: patrykxes
2 Replies

Featured Tech Videos