I noticed afterwards that the sar command was causing most of the delay but then again I am under the impression that bash was a bit faster.
To answer "methyl"'s question, I will use this script along with net-SNMP extend (or exec if you will) functionality. The idea is to graph the accumulation of read/writes on servers.
So... Can someone propose a logical interval? The servers that will be queried I assure are very very busy
Currently I have it set as
Code:
sar -d 5 4
this also helps so that my snmpwalks do not time out.
For the sake of learning.. Can someone answer how come the variable scope of the variable "CONT" is not global...?
I've been wondering if I can make mutexes much easier to use in C++ with creative use of a locking class and variable scope, but I'm not sure if things happen in the order I want. Here's pseudocode for something that could use the class:
int someclass::getvalue()
{
int retval;
... (0 Replies)
Hi,
I am stuck while developing a shell sub-routine which checks the log file for "success" or "failure". The subroutine reads the log file and checks for key word "success", if found it set the variable (found=1). It returns success or failure based on this variable.
My problem is, I can... (2 Replies)
Hi All,
I am new to unix shell scripting,
in the below script "num" is an input file which contains a series of numbers example :
2
3
5
8
I want to add the above all numbers and want the result finally outside the while loop. it prints the value zero instead of the actual expected... (13 Replies)
Hi,
I want to know about the variable scope in shell script.
How can we use the script argument inside the function?
fn () {
echo $1 ## I want this argument should be the main script argument and not the funtion argument.
}
also are there any local,global types in shell script?
if... (3 Replies)
Hi All,
I've been researching this problem and I am pretty sure that the issue is related to the while loop and the piping. There are plenty of other threads about this issue that recommend removing the pipe and using redirection. However, I haven't been able to get it working using the ssh and... (1 Reply)
Hi,
I use Korn Shell. Searched Forum and modified the way the file is input to the while loop, but still the variable does not seem to be retaining the final count.
while read name
do
Tmp=`echo $name | awk '{print $9 }'`
Count=`cat $Tmp | wc -l`... (6 Replies)
Hi All
Is there is any way to maintain the scope of the variable in unix
Example
x=1
j=1
while
do
..
....
....
while
do
..
..
x=x+1
done
#inner most while loop ends here
done
#outer loop ends here (8 Replies)
Hi,
I'm a Delphi developer new to linux, new to this forums and new to BASH programming and got a new task in my work: maintaining an existing set of BASH scripts. First thing I want to do is making the code more reliable as in my opinion it's really bad written. So here's the quest:
I'm... (6 Replies)
I have to admit that i have not used Perl at all and this is a singular occasion where i have to patch an existing Perl script. I dearly hope i do not have to do it again for the next 15 years and therefore try to avoid having to learn the programming language in earnest.
The OS is AIX 7.1, the... (2 Replies)
Cope sample1: test.sh
i=0
echo " Outside loop i = $i "
while
do
i=$(( $i + 1))
echo "Inside loop i = $i "
done
echo " Out of loop i is : $i "
When run output :
Outside loop i = 0
Inside loop i = 1
Inside loop i = 2
Inside loop i = 3
Inside loop i = 4
Inside loop i = 5
Inside... (8 Replies)
Discussion started by: Adarshreddy01
8 Replies
LEARN ABOUT LINUX
rbash
RBASH(1) General Commands Manual RBASH(1)NAME
rbash - restricted bash, see bash(1)RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO bash(1)GNU Bash-4.0 2004 Apr 20 RBASH(1)
01-11-2012
