Reg : add column


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Reg : add column
# 8  
Old 11-19-2008
It will be done (implicitly or explicitly) with a temporary file.
If you prefer the implicit approach you can:

1. Use sed with the i option if your sed implementation supports it:

Code:
sed -i ...

2. Use the Perl solution provided in the fourth post above.

Hope this helps.
# 9  
Old 11-19-2008
Hey
Once i entered the command sed 's/^/10Jun2006 /' infile>new
its deleted the entire data in file; please sugest me to reback to the original format;
Thanks
# 10  
Old 11-19-2008
Let me know whether to use as sed -i 's/^/10Jun2006 /' infile>new like that..
# 11  
Old 11-19-2008
Eidt: No,
you don't need to redirect to a new file.

Code:
sed -i 's/^/10Jun2006 /' infile


Last edited by radoulov; 11-19-2008 at 11:48 AM..
# 12  
Old 11-19-2008
Quote:
Originally Posted by 4urevers
Hey
Once i entered the command sed 's/^/10Jun2006 /' infile>new
its deleted the entire data in file; please sugest me to reback to the original format;
Thanks
You should always backup your files before modifying them.
# 13  
Old 11-19-2008
thanks for your reply..so let me know how toget the data back again
# 14  
Old 11-19-2008
You can get it again only if you hava a backup.
The command I gave you won't wipe out your data,
you should have used a different command ...
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Add column and multiply its result to all elements of another column

Input file is as follows: 1 | 6 2 | 7 3 | 8 4 | 9 5 | 10 Output reuired (sum of the first column $1*$2) 1 | 6 | 90 2 | 7 | 105 3 | 8 | 120 4 |9 | 135 5 |10 | 150 Please enclose sample input, sample output, and code... (5 Replies)
Discussion started by: Sagar Singh
5 Replies

2. Shell Programming and Scripting

Add Column base on other Column Data

HI Guys, I want add one extra Column base on 3rd Column . Input :- M204 MS204_154 :vsDataUeMe M204 MS204_154 es:sMeasure 0 M204 MS204_154 es:90ilterCoe 9 M204 MS204_154 es:searchE9090ortTime 40 M204 MS204_154 es:servOrPrioI90HoTimer 4000 M204 MS204_154 es:ueMeajllls154545 TRUE... (5 Replies)
Discussion started by: pareshkp
5 Replies

3. Shell Programming and Scripting

Add column base on same name of second column

HI Guys, I have input file A.txt 1 AAA 1 BBB 1 1SW 1 2SW 1 3SW 1 BBB 1 PPP 1 1SW 1 PPP 1 1WS 1 1AS 1 P1P 1 AAA (1 Reply)
Discussion started by: pareshkp
1 Replies

4. Shell Programming and Scripting

Add all 4 column entries for similar column ids

Hi, I want to write a script which will add the entries in all columns for the same column id. I can do it in excel, but I need to do this for 384 columns which will come down to 96 (384/4). How can I do this iteratively A A A A B B B B C C C C 1 0 1 0 2 1 4 5 3 4 5 6 2 0 0 2 3 5 70 100 1... (7 Replies)
Discussion started by: Diya123
7 Replies

5. Shell Programming and Scripting

Add a character C in a column if that column is blank

I have some files that look as follows. I need to add a character 'C' in the fifth column if that column is blank. I prefer in-place editing. 1 1 B M 0 0 203 0, 0.0 0, 0.0 0, 0.0 0, 0.0 0.000 360.0 360.0 360.0 141.9 15.4 28.8 66.1 2 2 B A ... (21 Replies)
Discussion started by: thejitha
21 Replies

6. Shell Programming and Scripting

ADD Column Btw two column

I want to add column btw to column Input ABCDE2012 120 21.6 ABCDE2012 126 0.9 PLKJHN2012 128 20.2 UNHYT2012 1210 -0.3 Output// Column 1 Column 2 Cl 3 Cl4 ABCDE2012 ABCDE2012120 120 21.6 ABCDE2012 ABCDE2012126 126 0.9 PLKJHN2012 PLKJHN2012128 128 20.2... (3 Replies)
Discussion started by: pareshkp
3 Replies

7. Shell Programming and Scripting

to add special tag to a column based on column condition

Hi All, I have following html code <TR><TD>9</TD><TD>AR_TVR_TBS </TD><TD>85000</TD><TD>39938</TD><TD>54212</TD><TD>46</TD></TR> <TR><TD>10</TD><TD>ASCV_SMY_TBS </TD><TD>69880</TD><TD>33316</TD><TD>45698</TD><TD>47</TD></TR> <TR><TD>11</TD><TD>ARC_TBS ... (9 Replies)
Discussion started by: ckwan
9 Replies

8. Shell Programming and Scripting

Need to add letters to a column and add in a new column subtracting from another column

So I have this input 1 10327 rs112750067 T C . PASS DP=65;AF=0.208;CB=BC,NCBI 1 10469 rs117577454 C G . PASS DP=2055;AF=0.020;CB=UM,BC,NCBI 1 10492 rs55998931 C T . PASS DP=231;AF=0.167;CB=BC,NCBI 1 10583 rs58108140 G A ... (3 Replies)
Discussion started by: kellywilliams
3 Replies

9. Shell Programming and Scripting

print column that match reg expr

Hi all, I want to cut a column which match the regular expression "beta", if I don't know the column number? cat test alpha;beta;gamma 11;22;33 44;55;66 77;88;99 should be command .... beta 22 55 (6 Replies)
Discussion started by: research3
6 Replies

10. Shell Programming and Scripting

Parse 1 column and add 2nd column

I'm racking my brain on this one! :( I have a list like this: Paul 20 Paul 25 Paul 30 Frank 10 Julie 15 Julie 13 etc, etc... I've been trying to figure out a way to have the output display the name in the first column ONCE and add the numbers in the second column and display that... (2 Replies)
Discussion started by: sdlennon
2 Replies
Login or Register to Ask a Question