Visit Our UNIX and Linux User Community


Unix Sort - Limitations


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Unix Sort - Limitations
# 1  
Old 10-05-2005
Unix Sort - Limitations

Hi All,

I want to sort a flat file which will contain millions of records [each line a record, fields seperated by delimiters] based on a key/field. For this I want to use unix sort command and before that I want to make sure that unix sort command has any file size limitations. And also please let me know whether I have to change any configuration details in unix to handle such a large files.

Thanks in advance
# 2  
Old 10-05-2005
If the file can be read by cat or sed, sort can usually deal with the size.

You may want to use the -T <directory> option to force sort to use a scratch directory that has enough free space. By default it uses TMPDIR - usually /tmp or var/tmp.

If you need to sort the file quickly because it affects subsequent batch jobs (for example) consider using the -y option with no argument for the option. This starts sort with the maximum free memory allowed or available.
# 3  
Old 10-06-2005
Thanks jim mcnamara for your reply. whether cat or sed is having any file size limitations
 

Previous Thread | Next Thread
Test Your Knowledge in Computers #878
Difficulty: Medium
Memory allocation is less critical in a real-time operating system (RTOS) than in other operating systems.
True or False?

10 More Discussions You Might Find Interesting

1. Solaris

Solaris limitations

Hi, I recently started working with Solaris, and what I noticed is that a lot of commands I used to regularly use don't work, like sed -i and grep -r. I have found work arounds for these problems though but it's a pain in the ass. I'm just wondering why they decided not to include these handy... (4 Replies)
Discussion started by: Subbeh
4 Replies

2. Red Hat

Eth0 Limitations

Hi, I have noticed some performance issues on my RHEL5 server but the memory and CPU utilization on the box is fine. I have a 1G full duplexed eth0 card and I am suspicious that this may be causing the problem. My eth0 settings are as follows: Settings for eth0: Supported ports: ... (12 Replies)
Discussion started by: Duffs22
12 Replies

3. Shell Programming and Scripting

Limitations of tac/cat?

As part of a quiz assigned during my unix class I was asked to write a program to ask for a file name, print read errors, and "reverse elements in a list." I used the 'tac' command in my solution, however, I was then lectured for 5 min about the "limitations" of the 'tac' command and how a 'for'... (6 Replies)
Discussion started by: 127.0.0.1
6 Replies

4. Red Hat

Limitations on the partition of linux

Hi, I need a documentation about limitations on the linux partition. On how many primary and extended I could create. And also on different type of storage, how many big capacity I can create. Thanks. (3 Replies)
Discussion started by: itik
3 Replies

5. UNIX and Linux Applications

gnuplot limitations

I'm running a simulation (programmed in C) which makes calls to gnuplot periodically to plot data I have stored. First I open a pipe to gnuplot and set it to multiplot: FILE * pipe = popen("gnuplot", "w"); fprintf(pipe, "set multiplot\n"); fflush(pipe); (this pipe stays open until the... (0 Replies)
Discussion started by: sedavidw
0 Replies

6. UNIX for Dummies Questions & Answers

Password limitations.

I would like to set my minimum password length to on Linux and AIX. However, doing this normally would only make it so newly added users will be affected by this. I would like for when I make this change, it either truncates everyone elses password, or prompts them to change it to 8+ characters.... (2 Replies)
Discussion started by: syndex
2 Replies

7. UNIX for Dummies Questions & Answers

csplit limitations

I am trying to use the csplit file on a file that contains records that have more than 2048 characters on a line. The resultant split file seems to ignore the rest of the line and I lose the data. Is there any way that csplit can handle record lengths greater than 2048? Thanks (0 Replies)
Discussion started by: ravagga
0 Replies

8. AIX

SORT Command Limitations

Hi every body, On AIX 4.3.3 what is the maximum file size that can be used with sort command? (0 Replies)
Discussion started by: aldowsary
0 Replies

9. IP Networking

need help with 32 bit IP address limitations

32 bit IP addresses with class based allocation schemes have limitations. does anyone know where i could get some info on this or if you have time to spare and really want to help me, a couple of sentences. thanks milos (1 Reply)
Discussion started by: 30177005
1 Replies

10. UNIX for Dummies Questions & Answers

mkdir limitations

What characters can't be used with a mkdir? Any limits on length of name? Thank you, Randy M. Zeitman http://www.StoneRoseDesign.com (12 Replies)
Discussion started by: flignar
12 Replies

Featured Tech Videos