I have one general and one specific question which I will be very grateful if you could help me with them. Let's start with my general question:
1. I am working on cluster computer shared with other people and I need to manipulate a big zipped text file of 13 GB. There is no possibility of unzipping it, if I could do that, I would have any problem but my problem is that working with zipped files using Awk or Linux commands become very difficult. I would be very grateful if you could give me some directions in this regard.
2. The second question is that being in that 13 GB zipped, I want to select one part of the file to make an example file to write my code to be able to later apply them to the whole file. When I display the file on shell by the command:
and I copy a section just by clicking and I paste it in a text editor, the spacing, number of fields, everything gets destroyed. How could I select a part of the file by command line without unzipping it?
I am trying to upload .zip files to Unix server and get the error 553 qmerev2002.zip: Permission denied, what is my problem?? I am able to load other files and folders fine. (3 Replies)
I have more than 500 gzipped files in a directory. I have one lookup file in the same directory with 200 key values. I need to get the name of the gzipped file which have any of these 200 key values. Here my criteria is do not unzip the files due to space constraint. Any suggestion? (3 Replies)
Hi All,
I need to check the logs and grep it. The problem is that the previous days are zipped with *.gz. How do grep on the *.gz?
Thank you in advance. (1 Reply)
Hi, all:
I've got two folders, say, "folder1" and "folder2".
Under each, there are thousands of files.
It's quite obvious that there are some files missing in each. I just would like to find them. I believe this can be done by "diff" command.
However, if I change the above question a... (1 Reply)
Hi,
I have below two zipped files -
file1.gz
023384148,1,,,02077301961,R,02077301961,N,0,02077301961,N,0,0,8010,02077300518,U,N,,02077300518,U,20100501011732,20100501011732,0,20100501011815,00000430,16,16,10,N;... (8 Replies)
Hi everyone,
when I try to copy *.gz files run cp within the correct source folder it works as follow:
Source folder = C:/Documents and Settings/user/Recent papers/2771/
Destination folder = C:/Documents and Settings/user/My documents/1532/temp
cp *.gz "C:/Documents and Settings/user/My... (2 Replies)
I'm new to Unix, trying to parse a huge 600MB zipped file...
I need to bzcat this file once and do some calculations (word count) on the lines based on certain criteria (see script)
the correct result/output should be:
column1=6
column2=4
the problem is that I'm getting column2=0 (see... (16 Replies)
Hi,
To all the Unix gurus this should be a simple task, but as a newbie I'm finding it hard to crack this. Any help is highly appreciated...
Scenario:
Step 1 : Move zip file from FTP folder to WORK folder
Step 2:
Unzip the file "Sample_YYYYMMDDHHMMSS.tar.gz" which contains many file... (10 Replies)
Hi,
I am zipping more than 20 files that has same timestamp in all of them. I need to create the zip file with the same timestamp as in the files that are zipped.
So I have files:
Dummytest_20140601W110515_file1.txt
Dummytest_20140601W110515_file2.txt
.......
.......... (5 Replies)
Dear all ,
I found that if we work with thousands line of data, awk does not work perfectly. It will cut hundreds line (others are deleted) and works only on the remain data.
I used this command : awk '$1==1{$1="Si"}{print>FILENAME}' coba.xyz to change value of first column whose value is 1... (4 Replies)
Discussion started by: ariesto
4 Replies
LEARN ABOUT OSX
intro
INTRO(9) BSD Kernel Developer's Manual INTRO(9)NAME
intro -- introduction to system kernel interfaces
DESCRIPTION
This section contains information about the interfaces and subroutines in the kernel.
PROTOTYPES ANSI-C AND ALL THAT
Yes please.
We would like all code to be fully prototyped.
If your code compiles cleanly with cc -Wall we would feel happy about it. It is important to understand that this isn't a question of just
shutting up cc, it is a question about avoiding the things it complains about. To put it bluntly, don't hide the problem by casting and
other obfuscating practices, solve the problem.
INDENTATION AND STYLE
Believe it or not, there actually exists a guide for indentation and style. It isn't generally applied though.
We would appreciate if people would pay attention to it, and at least not violate it blatantly.
We don't mind it too badly if you have your own style, but please make sure we can read it too.
Please take time to read style(9) for more information.
NAMING THINGS
Some general rules exist:
1. If a function is meant as a debugging aid in DDB, it should be enclosed in
#ifdef DDB
#endif /* DDB */
And the name of the procedure should start with the prefix DDB_ to clearly identify the procedure as a debugger routine.
SCOPE OF SYMBOLS
It is important to carefully consider the scope of symbols in the kernel. The default is to make everything static, unless some reason
requires the opposite.
There are several reasons for this policy, the main one is that the kernel is one monolithic name-space, and pollution is not a good idea
here either.
For device drivers and other modules that don't add new internal interfaces to the kernel, the entire source should be in one file if possi-
ble. That way all symbols can be made static.
If for some reason a module is split over multiple source files, then try to split the module along some major fault-line and consider using
the number of global symbols as your guide. The fewer the better.
SEE ALSO style(9)HISTORY
The intro section manual page appeared in FreeBSD 2.2.
BSD December 13, 1995 BSD