10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello, everyone
I am beginner for shell programming. I want to print all lines that have the same values in first two columns
data:
a b 1 2
a a 3 4
b b 5 6
a b 4 6
what I expected is :
a a 3 4
b b 5 6
but I searched for one hour in... (2 Replies)
Discussion started by: nengcheng
2 Replies
2. Shell Programming and Scripting
Hallo,
I would need to extract only rows which has different value in the second and third column.
Thank you very much for any advices
Input:
A 0 0
B 0 1
C 1 1
D 1 3
Output
B 0 1
D 1 3 (4 Replies)
Discussion started by: kamcamonty
4 Replies
3. Shell Programming and Scripting
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. Shell Programming and Scripting
Hi all, I know this sounds suspiciously like a homework course; but, it is not.
My goal is to take a file, and match my "ID" column to the "Date" column, if those conditions are true, add the total number of minutes worked and place it in this file, while not printing the original rows that I... (6 Replies)
Discussion started by: mtucker6784
6 Replies
5. Shell Programming and Scripting
Hi Friends,
I have come across some files where some of the columns don not have data.
Key, Data1,Data2,Data3,Data4,Data5
A,5,6,,10,,
A,3,4,,3,,
B,1,,4,5,,
B,2,,3,4,,
If we see the above data on Data5 column do not have any row got filled. So remove only that column(Here Data5) and... (4 Replies)
Discussion started by: ks_reddy
4 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I have a tab delimited text file with multiple columns. The second and third columns include numbers that have not been sorted. I want to extract rows where the second column includes a value between -0.01 and 0.01 (including both numbers) and the first third column includes a value between... (1 Reply)
Discussion started by: evelibertine
1 Replies
7. Shell Programming and Scripting
Hi All,
I have a huge (and its really huge!) matrix about 400GB in size (2 million rows by 1.5 million columns) . I am trying to optimize its space by creating a sparse representation of it.
Miniature version of the matrix looks like this (matrix.mtx):
3.4543 65.7876 54.564
2.12344... (4 Replies)
Discussion started by: shoaibjameel123
4 Replies
8. Shell Programming and Scripting
Hi
My pipe delimited .txt file contains rows with 10 columns.
Can anyone advise how I output to file only those rows with the letters ‘ci'
as the first 2 characters in the 3rd column ?
Many thanks (4 Replies)
Discussion started by: malts18
4 Replies
9. Programming
Hi there, if i run
SELECT now() -interval 1 day
I get all items within the last 24 hours. How would I reverse/adjust this so that i get everything that ISNT in the last 24 hours ?
any help on this would be greatly appreciated
Cheers (1 Reply)
Discussion started by: rethink
1 Replies
10. Shell Programming and Scripting
Hi guys I want to print the values by using this script but its giving the no of rows and columns as input instead of values
Would you plz help me on this
FILE- chr1.txt
1981 1
1971 1
1961 1
1941 1
perl script
#!/usr/bin/perl -w
$infile1 = 'chr1.txt';
$outfile3 = 'out3.txt';
... (3 Replies)
Discussion started by: nogu0001
3 Replies