11-04-2019
Thank you for all your help, works perfect
.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I am having file which contains around 15 columns, i need to fetch column 3,12,14 based on the condition that column 3 starts with 40464
this is the sample data
how to achieve that (3 Replies)
Discussion started by: aemunathan
3 Replies
2. Shell Programming and Scripting
I’m trying to modify someone perl script to fix a bug. The piece of code checks that the zone name you want to add is unique. However, when the code runs, it finds a partial match using grep, and decides it already exists, so the “create” command exits.
$cstatus = `${ZADM} list -vic | grep... (3 Replies)
Discussion started by: TKD
3 Replies
3. UNIX for Dummies Questions & Answers
Hi, I was trying to figure this out but failed so I hope someone here can help me, thank you in advance.
I have two files.
file1: aa M
bb N
cc O
dd P
ee Q file2: aa A_87_P254063
cc A_87_P016532
bb A_87_P104793
dd A_87_P055331
ee A_87_P059706
aa A_87_P071636
ee A_87_P028302... (2 Replies)
Discussion started by: yuejian
2 Replies
4. UNIX for Dummies Questions & Answers
Hi I have a question and hope I can get answer here. Thank you in advance.
I have two files:
file1:
aa X
bb Y
cc Z
file2:
cc A
bb B
dd C
aa D
bb E
If the 1st column match in both file1 and file2, the 2nd column in file2 will be replaced by the 2nd column in file1. If there is no... (2 Replies)
Discussion started by: yuejian
2 Replies
5. Shell Programming and Scripting
I posted the incorrect files yesterday and apologize. I also modified the awk script but with no luck. There are two text files in the zip (name.txt and output.txt). I am trying to match $2 in name.txt with $1 in output.txt and if they match then $1 of name.txt is copied to $7 of output.txt. ... (7 Replies)
Discussion started by: cmccabe
7 Replies
6. Shell Programming and Scripting
I have a specific set (all ending with .bam) of downloaded files in a directory /home/cmccabe/Desktop/NGS/API/2-15-2016. What I am trying to do is use a match to $2 in name to rename the downloaded files. To make things a more involved the date of the folder is unique and in the header of name... (1 Reply)
Discussion started by: cmccabe
1 Replies
7. Shell Programming and Scripting
Hi All,
I have 100 folders with the first delimiter has a unique name i.e (123_hello and 575_hello) and each folder have atlist 1000 plus files with naming convention i.e (575_hello_1.iso ... 575_hello_1000.iso).
575_hello/575_hello_1.iso
575_hello/575_hello_2.iso
575_hello/575_hello_3.iso... (8 Replies)
Discussion started by: lxdorney
8 Replies
8. Shell Programming and Scripting
Hi, I have a tab delimited text file like this one. I need to do a partial match of a particular cell and then replace matches with an empty cell. So here is a sample:
Smith FordMustang ChevroletCamaro
Miller FordFiesta
Jones KiaSorrento
Davis ChevroletCamaro
Johnson ToyotaHighlander
I... (4 Replies)
Discussion started by: mikey11415
4 Replies
9. Shell Programming and Scripting
I am trying to create a cronjob that will run on startup that will look at a list.txt file to see if there is a later version of a database using database.txt as the source. The matching lines are written to output.
$1 in database.txt will be in list.txt as a partial match. $2 of database.txt... (2 Replies)
Discussion started by: cmccabe
2 Replies
10. Shell Programming and Scripting
In the portion of bash below I am using rename to match the $id variable to $file and when a match (there will alwsys be one) is found then the $id is removed from each bam and bam.bai in $file and _test is added to thee file name before the extension. Each of the variables is set correctly but... (3 Replies)
Discussion started by: cmccabe
3 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