03-14-2002
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I am using sed and nawk command for replace/add/remove on file records.
But when I am using the inputfile name and directing output to the same inpu name file becomes empty.
I don't want to use to copy it to another file and move it back to original file.
Example:
sed 's/./,&/17'... (2 Replies)
Discussion started by: svenkatareddy
2 Replies
2. Shell Programming and Scripting
Hi,
I have an HTML form through which I get some text as input. i need to run a shell script say script.sh inside a perl-cgi script named main_cgi.sh on the form input.
I want to write the contents of the form in a file and then perform some command line operations like grep, cat on the text... (2 Replies)
Discussion started by: smriti_shridhar
2 Replies
3. Shell Programming and Scripting
i want use ssh on the host01 to execute autoexec.sh on the host02 like following :
host01> ssh host02 autoexec.sh
autoexec.sh include nohup command like follwing :
nohup /home/jack/deletedata.sh &
after i execute ssh host02 autoexec.sh one the host01. i can't found deletedata.sh... (1 Reply)
Discussion started by: orablue
1 Replies
4. Shell Programming and Scripting
Hi,
I basically have 2 shell scripts.
One is a shell script will get the variable value from the user. The variable is nothing but the IP of the remote system.
Another shell script is a script that does the job of connecting to the remote system using ssh. This uses a expect utility in turn.
... (2 Replies)
Discussion started by: sunrexstar
2 Replies
5. Shell Programming and Scripting
Hi ,
can I use var1 instead of inputfile (index.html) in AWK?
var1='<script>text1 asd asd asd</script>
text2 asd, asd
text3 asd asd asd asd
text4 asdasdasd asd asd'
awk '/<script /{p=1} /<\/script>/{p=0; next}!p' index.html
Thank you! (7 Replies)
Discussion started by: sanantonio7777
7 Replies
6. Shell Programming and Scripting
Hi All,
I have new for shell scripting.
Problem : I have one scrip at serv1 and path of server is /apps/dev/provimage/scripts and script name:extract_ancillary.bat.
I need to call this script at server2(my working server) and execute at server2 .
Please let me know how to build the... (5 Replies)
Discussion started by: Vineeta Nigam
5 Replies
7. Shell Programming and Scripting
I have a shell script (.sh) and I want to pass a parameter value to the awk command but I am getting exception, please assist.
diff=$1$2.diff
id=$2 new=new_$diff
echo "My id is $1"
echo "I want to sync for user account $id"
##awk command I am using is as below
cat $diff | awk... (2 Replies)
Discussion started by: Ashunayak
2 Replies
8. UNIX for Dummies Questions & Answers
Dear Unix gurus,
We have a config shell script file which has 30 variables which needs to be passed to master unix shell script that invokes oracle database sessions. So those 30 variables need to go through the database sessions (They are inputs) via a shell script. one of the variable name... (1 Reply)
Discussion started by: dba1981
1 Replies
9. Shell Programming and Scripting
Dear Unix gurus,
We have a config shell script file which has 30 variables which needs to be passed to master unix shell script that invokes oracle database sessions. So those 30 variables need to go through the database sessions (They are inputs) via a shell script. one of the variable name... (1 Reply)
Discussion started by: dba1981
1 Replies
10. UNIX for Beginners Questions & Answers
Hi,
I am totally a newbie to any programming languages and I just started an entry level job in an IT company. One of my recent tasks is to create a script that is able to show the log file of linux service (i.e. ntpd service)
lets say, if I run my script ./test.sh, the output should be... (3 Replies)
Discussion started by: xiaogeji
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