10-22-2012
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello all,
I'm invoking the program generate-report using backticks from my perl program and redirecting the output to the log file sge-stderr.log. But when i check the process using ps command it is spawing two processes where the below code is parent process and the program generate-report as... (2 Replies)
Discussion started by: kalyanraj
2 Replies
2. Shell Programming and Scripting
I'm writing a script using file descriptor 2 (std error) to send an email only if the command fails or errors out but the script always emails me irrepective of whether it fails or not. It will not email the /tmp/check.error file output if doesn't error out just the mail with the subject "Cannot... (3 Replies)
Discussion started by: barkath
3 Replies
3. Shell Programming and Scripting
I currently have an expect script that issues the 'mail' command and sends an 'x' when it receives the & prompt from mail to quit.
The expect script is able to do stty rows 100 columns 200 < $spawn_out(slave,name) to set up the number of columns and rows.
I would like to get rid of the expect... (0 Replies)
Discussion started by: jharvey
0 Replies
4. Shell Programming and Scripting
hi,
i wat to get the output of a grep command in a file. but when i am trying out the same grep command in the unix prompt its working fine.. i am getting the output properly.. but when i am writing the same command inside my shell script , its just creating a new output file with no contents... (11 Replies)
Discussion started by: kripssmart
11 Replies
5. Shell Programming and Scripting
Hi,
I'd like to redirect the STDOUT output from my script to a file and simultaneously display it at a console.
I've tried this command:
myscript.sh | tail -f
However, it doesn't end after the script finishes running
I've also tried this:
myscript.sh | tee ~/results.txt
But it writes... (3 Replies)
Discussion started by: wenclu
3 Replies
6. Programming
hi,
i have a html form which call a perl program, this perl program calls a shell script.
<html>
<head>
<title>demo</title>
</head>
<body>
<form name="frm1" action="/cgi-bin/perl_script.pl" method="post">
<input type="text" name="fname">
... (1 Reply)
Discussion started by: Little
1 Replies
7. Shell Programming and Scripting
Hi Guys,
I want to redirect the output of 3 scripts to a file and then mail the output of those three scripts.
I used below but it is not working:
OFILE=/home/home1/report1
echo "report1 details" > $OFILE
=/home/home1/1.sh > $OFILE
echo... (7 Replies)
Discussion started by: Vivekit82
7 Replies
8. UNIX for Dummies Questions & Answers
I have the below script, but when i execute it is still printing to screen is there a way i can stop this and just print everything to the log file. Thank you.
#!/bin/bash
exec > >(tee "/var/log/ScriptLogs/called_from_incrontab.log") 2>&1
DIR="$1"
FILE="$2"
echo "STEP 1: Datafile... (5 Replies)
Discussion started by: Ariean
5 Replies
9. Shell Programming and Scripting
i have simple program that generate log file 1 line every sec, i need to do grep for specific record then redirect to another file.
#!/bin/bash
for i in `seq 1 20`;
do
echo $i
sleep 1
done
./test.sh |egrep "5|10|15"
5
10
15
r
./test.sh... (2 Replies)
Discussion started by: before4
2 Replies
10. Shell Programming and Scripting
Hi Experts,
Could you pls help with below query
I have written below script to capture disk utilization and then send the output on mail. But getting unformated output on mail
#!/bin/bash
echo "Hi Sur,">dfoutput.csv
printf '\n' >>dfoutput.csv
echo "Please find BAYSQUAR2 filesystem... (4 Replies)
Discussion started by: as7951
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