02-13-2009
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I am a newbie to shell scripting and to Linux environment as well.
In my project I am trying to search for following text from the httpd.conf file
<Directory '/somedir/someinnerdir'>
AllowOverride All
</Directory>
and then remove this text and again rewrite the same text.
The... (1 Reply)
Discussion started by: bhushan
1 Replies
2. Shell Programming and Scripting
I have a sample file like this
7829885 7831552 + 1 1667, 0,
35934936 35937087 - 2 1281,870, 0,1281,
I would like to replace values starts with comma with just value like 0, to 0 or 1667, to 1667.
I can do with this by using tr -d '0,' '0' <file
But the... (2 Replies)
Discussion started by: repinementer
2 Replies
3. UNIX for Advanced & Expert Users
Hi
I have csv file which has test as multiline in the one column. ex.
---------data.csv------------
Seqno,EmpID,EmpName,Dept
1,123,"Vipin
Agrawal","IT
BUSINESS
OFFSHORE"
2,124,"Simon Bhai","IT"
The problem is name "Vipin Agrawal" has one new line character b/w name. same as Dept. ... (1 Reply)
Discussion started by: meetvipin
1 Replies
4. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Give the vi command for replacing all occurances of the string "DOS" with the string "UNIX" in the whole... (4 Replies)
Discussion started by: kbreitsprecher
4 Replies
5. Shell Programming and Scripting
Hi there
I just wondered if someone could give me some perl advice
I have a bunch of text files used for a wiki that have common headings such as
---++ Title
blah
---++ Summary
blah
---++ Details
Here is the multiline
block
of text I
wish
to (6 Replies)
Discussion started by: rethink
6 Replies
6. Shell Programming and Scripting
Hi all
I have data files which contain data as shown below:
Line 5: FIDE
INST_DESC: DIAM Co Ltd/Japan => MAID Co Ltd/Japan
INST_NME: DIAM Co Ltd/Japan => MAID Co Ltd/Japan
Line 6: FIDE
INST_DESC: DIAM DL/Pimco US Bond Open Born in the USA => MAID DL/Pimco US Bond Open Born in the... (6 Replies)
Discussion started by: Ganesh_more
6 Replies
7. UNIX for Dummies Questions & Answers
Hi
We have a database export file which needs to be formatted as below
InputCreate view ABC1 as Locking ABC1
for Access select * from PQR
Create view ABC2 as Locking
ABC2 for access
select * from PQR
Create view ABC3
as Locking ABC3
for
Access
select * from PQR
OutputCreate... (5 Replies)
Discussion started by: sheetal.arun
5 Replies
8. Shell Programming and Scripting
I'm trying to replicate the sed output on p.108 of Sed&Awk,by Doughery & Robbins, 2nd edition.
I'm on a Windows 10 Surface Pro, running Cygwin for 64-bit versions of Windows.
Input text saved in text file called data_p108.txt:
Consult Section 3.1 in the Owner and Operator
Guide for a... (9 Replies)
Discussion started by: prooney
9 Replies
9. Shell Programming and Scripting
Hello.
A find command return a list of file.
For each fileReplace the content starting with the first "§" (of two) ending with last "ɸ" (of two), regardless of the content ( five lines )
by the following content (exactly) :
§2019_08_23§ #
# ... (8 Replies)
Discussion started by: jcdole
8 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