10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Dear all,
I have a data like below (n of rows=400,000) and I want to extract the rows with certain strings. I use code below. It works if there is not too many strings for example n of strings <5000. while I have 90,000 strings to extract. If I use the egrep code below, I will get error:
... (3 Replies)
Discussion started by: forevertl
3 Replies
2. Shell Programming and Scripting
Hi
I have a txt file and I would like to use egrep without using -v option to exclude the lines which matches with multiple Strings.
Let's say I have some text in the txt file. The command should not fetch lines if they have strings something like
CAT MAT DAT
The command should fetch me... (4 Replies)
Discussion started by: Sathwik
4 Replies
3. Shell Programming and Scripting
I have a bunch of file numbers in the file 'test':
I'm trying the above command to change all the instances of "H" to "Na+" in the file testsds.pdb at the line numbers indicated in the file 'test'. I've tried the following and various similar alternatives but nothing is working:
cat test |... (3 Replies)
Discussion started by: crunchgargoyle
3 Replies
4. UNIX for Dummies Questions & Answers
Hello All,
this is my first post so I don't know if I am doing this right.
I would like to append entries from a series of strings (contained in a text file) consecutively at the end of specifically labeled lines in another file.
As an example:
- the file that contains the values to be... (3 Replies)
Discussion started by: gus74
3 Replies
5. UNIX for Dummies Questions & Answers
Dear All,
I have a file which contains a column with age, which is represented in two following patterns
1. "007/A" or ''007/a" or ''7 /a" ..... In this case A or a means year and I would like to extract only the numeric values eg 7 in the above case if this pattern exits in a line of file.... (5 Replies)
Discussion started by: pawannoel
5 Replies
6. Shell Programming and Scripting
The question is not as simple as the title... I have a file, it looks like this
<string name="string1">RZ-LED</string>
<string name="string2">2.0</string>
<string name="string2">Version 2.0</string>
<string name="string3">BP</string>
I would like to check for duplicate entries of... (11 Replies)
Discussion started by: raidzero
11 Replies
7. Shell Programming and Scripting
Hi,
I have two files. 1st file has 1 column (huge file containing ~19200000 lines) and 2nd file has 2 columns (small file containing ~6000 lines).
#################################
huge_file.txt
a
a
ab
b
##################################
small_file.txt
a 1.5
b 2.5
ab ... (4 Replies)
Discussion started by: AshwaniSharma09
4 Replies
8. Shell Programming and Scripting
Hi all,
I have a positional text file that comes from some source application. Before it is processed by destination application I have to add some header (suffix) to every record(line) in the file.
e.g.
Actual File
...............
AccountDetails
AcNO Name Amount
1234 John 26578
5678... (3 Replies)
Discussion started by: sharath160
3 Replies
9. UNIX for Dummies Questions & Answers
Hi all,
I'm very very new to UNIX and AWK world.Please help me in finding a solution for my problem.
I'm having a file like this
-----------------------------------------------------------------
~Version Information
VERS. 2.0: CWLS log ASCII Standard -VERSION 2.0
WRAP. ... (4 Replies)
Discussion started by: santyshyam
4 Replies
10. Shell Programming and Scripting
Hi,
I have a sql file and i need to extract the table names used in the sql file using a unix script. If i can extract the lines between the keywords 'FROM' and 'WHERE' in the file, my job is done. can somebody tell me how to do this using a shell script. If u can just let me know, how to... (2 Replies)
Discussion started by: babloo
2 Replies