06-02-2005
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
How do i find out the number of files in a directory using unix command ? (14 Replies)
Discussion started by: Raynon
14 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Please let me know how to find out number of files in a directory excluding existing files..The existing file format will be unknown..each time..
Thanks (3 Replies)
Discussion started by: ammu
3 Replies
3. Shell Programming and Scripting
how can i find number of lines in files & subdirectories ? (3 Replies)
Discussion started by: pcbuilder
3 Replies
4. UNIX for Dummies Questions & Answers
Dear All
i need to find to total number of the files and subdirectories under /software
i issue this command
find /software/* -print | wc -l
but i need another command to know how many files and subdirectories . (3 Replies)
Discussion started by: thecobra151
3 Replies
5. Shell Programming and Scripting
1) I need a shell code to count the number of files ( without directories or sub-directories ) in a directory given as arguments I tried this code but it didn't work , maybe I tried the wrong one:
numOfFiles=`find $1 -type f -maxdepth 1 | wc -l`
I found it in another thread in this site..
... (17 Replies)
Discussion started by: jack1985
17 Replies
6. UNIX for Dummies Questions & Answers
Hi all...
I have a directory called dbrn. This directory contains an unknown number of subdirectories which in turn contain an unknown number of files.
What I want to know is:
How many files with extention .ABC can be found in /dbrn across all subdirecties, and what is the total size for... (9 Replies)
Discussion started by: Beun
9 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I have a large number of subdirectories (>200), and in each of these directories there is a file with a name like "opp1234.dat".
I'd like to know how I could change the names of these files to say "out.dat" in all these subdirectories in one go.
Thanks! (5 Replies)
Discussion started by: lost.identity
5 Replies
8. Shell Programming and Scripting
Hi!
I just want to count number of files in a directory, and write to new text file, with number of files and their name
output should look like this,,
assume that below one is a new file created by script
Number of files in directory = 25
1. a.txt
2. abc.txt
3. asd.dat... (20 Replies)
Discussion started by: Akshay Hegde
20 Replies
9. Shell Programming and Scripting
Hi All!
I need to have a script that counts the number of files arriving in a landing directory, them some app pick these files to be processed and load to a DB. But this process is so fast that I am not able to count all the files arriving on a landing directory.
Please can you help?
My... (6 Replies)
Discussion started by: fretagi
6 Replies
10. UNIX for Dummies Questions & Answers
I have a folder named test/ and under that I have multiple directories and in each of the directory I have multiple log files. I want to know how many files exists under each sub directory.
test
|--quanrantine
|--logfile1
|--logfile2
|--spooling
|--logfile1
... (4 Replies)
Discussion started by: ravikirankethe
4 Replies
LEARN ABOUT NETBSD
nbperf
NBPERF(1) BSD General Commands Manual NBPERF(1)
NAME
nbperf -- compute a perfect hash function
SYNOPSIS
nbperf [-ps] [-a algorithm] [-c utilisation] [-h hash] [-i iterations] [-m map-file] [-n name] [-o output] [input]
DESCRIPTION
nbperf reads a number of keys one per line from standard input or input. It computes a minimal perfect hash function and writes it to stdout
or output. The default algorithm is "chm".
The -m argument instructs nbperf to write the resulting key mapping to map-file. Each line gives the result of the hash function for the
corresponding input key.
The parameter utilisation determines the space efficiency.
Supported arguments for -a:
chm This results in an order preserving minimal perfect hash function. The utilisation must be at least 2, the default. The number of
iterations needed grows if the utilisation is very near to 2.
chm3
Similar to chm. The resulting hash function needs three instead of two table lookups when compared to chm. The utilisation must be at
least 1.24, the default. This makes the output for chm3 noticable smaller than the output for chm.
bpz This results in a non-order preserving minimal perfect hash function. Output size is approximately 2.79 bit per key for the default
value of utilisation, 1.24. This is also the smallest supported value.
Supported arguments for -h:
mi_vector_hash Platform-independent version of Jenkins parallel hash. See mi_vector_hash(3).
The number of iterations can be limited with -i. nbperf outputs a function matching uint32_t hash(const void * restrict, size_t) to stdout.
The function expects the key length as second argument, for strings not including the terminating NUL. It is the responsibility of the call-
er to pass in only valid keys or compare the resulting index to the key. The function name can be changed using -n name. If the -s flag is
specified, it will be static.
After each failing iteration, a dot is written to stderr.
nbperf checks for duplicate keys on the first iteration that passed basic hash distribution tests. In that case, an error message is printed
and the program terminates.
If the -p flag is specified, the hash function is seeded in a stable way. This may take longer than the normal random seed, but ensures that
the output is the same for repeated invocations as long as the input is constant.
EXIT STATUS
The nbperf utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
mi_vector_hash(3)
AUTHORS
Jorg Sonnenberger
BSD
September 25, 2012 BSD