Hi,
I've list of files in a directory, which have date stamp value in their names.
ex:
abc_data_20071102.csv,
abc_data_20091221.csv,
abc_data_20100110.csv,
abc_data_20100222.csv,
abc_data_20080620.csv,... etc.,
I need to select and process only files, within the given date... (4 Replies)
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)
Hi Guys !
i want to search a record in file by matching two values in a record in two different columns
suppose i have 3 columns
and i want to select all those values from col1 for which in col3 has a specific value
e.g select all "john" from column1 where column 3 has a value of "20"
... (9 Replies)
HI all,
I have a simple challenge for you.. I have the following pipe delimited file
2345|98|1809||x|969|0
2345|98|0809||y|0|537
2345|97|9809||x|544|0
2345|97|0909||y|0|651
9685|98|7809||x|321|0
9685|98|7909||y|0|357
9685|98|7809||x|687|0
9685|98|0809||y|0|234
2315|98|0809||x|564|0
... (2 Replies)
Hi,
I have a file with the following columns:
361459 447394 CHL1
290282 290282 CHL1
361459 447394 CHL1
361459 447394 CHL1
178352861 178363529 AGA
178352861 178363529 AGA
178363657 178363657 AGA
Essentially, using CHL1 as an example. For any line that has CHL1 in... (2 Replies)
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)
Hello to all.
This is first post. Kindly excuse me if I do not adhere to any rules and regulations of this forum.
I have a file containing some rows with three columns each per row(separeted by a space). There are certain rows for which first two columns have same value but the value in... (6 Replies)
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)
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)