12-31-2010
How long is an "interval"?
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1. UNIX for Dummies Questions & Answers
Hello!
I want to evaluate some mathematical expressions in a script and I try to use 'expr' command.
Unfortunatally, when I have, for example,
expr 8.2 + 6
the result is 'expr: non-numeric argument'
Why ?
I work on SunOs 5.7.
Thanks in advance
Nathe (5 Replies)
Discussion started by: Nathe
5 Replies
2. Red Hat
i am new to shell programming, currently using redhat linux of version
2.4.20-8.
i have problem in executing expr command in the following shell script
$ x=5
$ x='expr $x + 1'
$ echo $x
the output is displaying always
expr $x + 1
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Discussion started by: saikumarm80
3 Replies
3. Shell Programming and Scripting
What is the difference between test expr VS .
For example :
if test 5 -eq 6
echo "Wrong"
and
if
echo "Wrong"
bot will give the same output as Wrong.
Now, what is the difference between these two? though they are producing the same result why we need two?
Any answer will be... (2 Replies)
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2 Replies
4. Shell Programming and Scripting
I am trying to get some coubt through the following code.
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echo "tot_ln_cnt : "$tot_ln_cnt
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Discussion started by: mady135
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5. Shell Programming and Scripting
$ cat > mtable
#!/bin/sh
#
#Script to test for loop
#
#
if
then
echo "Error - Number missing form command line argument"
echo "Syntax : $0 number"
echo "Use to print multiplication table for given number"
exit 1
fi
n=$1
for i in 1 2 3 4 5 6 7 8 9 10
do
echo "$n * $i = `expr $i \*... (1 Reply)
Discussion started by: jackel7777
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6. UNIX for Dummies Questions & Answers
Hey there
i want to subtract the content from $b from $a. Each variable has got 18 values (normal numbers from 0 - 99).
How can i subtract them? I know i have to use the expr command, this is what i have till now:
a=`cat Tabelle.dat | awk {'print $4'} | awk -F: {'print $1'}`
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Discussion started by: Mad van Bert
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7. Shell Programming and Scripting
Hi All,
I'm writing a shell script in KSH, where I want to store the filename, total record count and actual record count of all the source files. The source files reside in 4 different sub-folders under the same root folder.
Below is code:
#!/usr/bin/ksh... (6 Replies)
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8. Shell Programming and Scripting
Legends,
I am not able to set "expr" function in ksh script.
Below is the sample code i used, and output is as "Syntax error"
Please help me to come out of it.
OUTPUT (9 Replies)
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9. Shell Programming and Scripting
Hi
I have bellow script:
t1=`cat node1.txt | grep thread1 | cut -f2 -d '-'`
t2=`cat node2.txt | grep thread2 | cut -f2 -d '-'`
t3=`cat node1_rcat.txt | grep thread1 | cut -f2 -d '-'`
t4=`cat node2_rcat.txt | grep thread2 | cut -f2 -d '-'`
if ]; then
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10. Shell Programming and Scripting
HI there
I am trying to understand Shell scripting to create my own, I am attempting a few examples can anyone tell me what this means?n=$( expr $n + 1)Tried looking on the internet, but just cannot find its anywhere :( .Help please (4 Replies)
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RTMON(8) System Manager's Manual RTMON(8)
NAME
rtmon - listens to and monitors RTnetlink
SYNOPSIS
rtmon [ options ] file FILE [ all | LISTofOBJECTS ]
DESCRIPTION
This manual page documents briefly the rtmon command.
rtmon listens on netlink socket and monitors routing table changes.
rtmon can be started before the first network configuration command is issued. For example if you insert:
rtmon file /var/log/rtmon.log
in a startup script, you will be able to view the full history later. Certainly, it is possible to start rtmon at any time. It prepends
the history with the state snapshot dumped at the moment of starting.
OPTIONS
rtmon supports the following options:
-Version
Print version and exit.
help Show summary of options.
file FILE [ all | LISTofOBJECTS ]
Log output to FILE. LISTofOBJECTS is the list of object types that we want to monitor. It may contain 'link', 'address', 'route'
and 'all'. 'link' specifies the network device, 'address' the protocol (IP or IPv6) address on a device, 'route' the routing table
entry and 'all' does what the name says.
-family [ inet | inet6 | link | help ]
Specify protocol family. 'inet' is IPv4, 'inet6' is IPv6, 'link' means that no networking protocol is involved and 'help' prints
usage information.
-4 Use IPv4. Shortcut for -family inet.
-6 Use IPv6. Shortcut for -family inet6.
-0 Use a special family identifier meaning that no networking protocol is involved. Shortcut for -family link.
USAGE EXAMPLES
# rtmon file /var/log/rtmon.log
Log to file /var/log/rtmon.log, then run:
# ip monitor file /var/log/rtmon.log
to display logged output from file.
SEE ALSO
ip(8)
AUTHOR
rtmon was written by Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>.
This manual page was written by Michael Prokop <mika@grml.org>, for the Debian project (but may be used by others).
RTMON(8)