10 More Discussions You Might Find Interesting
1. Programming
Hi,
I am having two individual scripts
Script 1): CGI script - is a simple script which trigger bash script
Script 2): Bash script - is a script which execute which collects file system utilization information from all the Unix servers
If I am executing CGI script manually from command... (2 Replies)
Discussion started by: Naveen.6025
2 Replies
2. Shell Programming and Scripting
I'm attempting to write a bash script that will create a network between virtual machines. It accepts three arguments: an RSpec that describes the network topology, and two list of machines (servers and clients).
I have a (working) Perl script that I want to call. This Perl script takes an RSpec... (6 Replies)
Discussion started by: mecaka
6 Replies
3. Shell Programming and Scripting
Hi All,
I am aware that html tags can be embedded in cgi script as below.. In the same way is it possible to embed the below javascript in perl cgi script ??
print("<form action="action.htm" method="post" onSubmit="return submitForm(this.Submitbutton)">");
print("<input type = "text"... (1 Reply)
Discussion started by: scriptscript
1 Replies
4. Programming
Hi
I have a bash script which takes parameters
sh /tmp/gdg.sh -b BASE-NAME -n 1 -s /source/data -p /dest/data/archive -m ARC
gdg.sh will scan the /source/data and will move the contents to /dest/data/archive after passing through some filters. Its working superb from bash
I have... (0 Replies)
Discussion started by: rakeshkumar
0 Replies
5. Web Development
Can anyone tell me how to export a variable from one perl CGI script to another perl cgi script when using a redirect.
Upon running the login.pl the user is prompted to enter user name and password. Upon entering the correct credentials (admin/admin) the user is
redirected to welcome page.
My... (3 Replies)
Discussion started by: Arun_Linux
3 Replies
6. Shell Programming and Scripting
In a bash script, one can call a perl command in the following manner, where "myperlcommand" is a perl command.
perl -e 'myperlcommand(arguments)'
perl -e 'print("UUUU"x4)'
Now, how can one call a bash command from within a perl script? (Suppose that mybashcommand is a bash... (1 Reply)
Discussion started by: LessNux
1 Replies
7. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
This is a problem I am having with my 2 semester senior project. I have a LAMP server running Ubuntu 9.10 with... (8 Replies)
Discussion started by: JMooney5115
8 Replies
8. Shell Programming and Scripting
Hi
I m new to perl. I m trying to write a perl script that calls a bash script; does anyone have a script already that they can provide or help me out? Thanks a lot. (2 Replies)
Discussion started by: adnan786
2 Replies
9. Shell Programming and Scripting
hi,,
i have perl scipt with line :
system('./try.sh $t $d $m');
in shell scipt try.sh i have the line:
echo $1
its not printing value of $t that i hav passed..y is it so..i am running it from apache web server (2 Replies)
Discussion started by: raksha.s
2 Replies
10. Shell Programming and Scripting
I hope its ok to start a new thread, I was going to use my existing one but thought a new one would better clarify things and provide better search for future reference.
Well I have my bash program working now, all nice, user input validated, output formatted, everything is looking sexy.
Now... (2 Replies)
Discussion started by: andyj
2 Replies
PMDABASH(1) General Commands Manual PMDABASH(1)
NAME
pmdabash - Bourne-Again SHell trace performance metrics domain agent
SYNOPSIS
$PCP_PMDAS_DIR/bash/pmdabash [-C] [-d domain] [-l logfile] [-I interval] [-t timeout] [-U username] configfile
DESCRIPTION
pmdabash is an experimental Performance Metrics Domain Agent (PMDA) which exports "xtrace" events from a traced bash(1) process. This
includes the command execution information that would usually be sent to standard error with the set -x option to the shell.
Event metrics are exported showing each command executed, the function name and line number in the script, and a timestamp. Additionally,
the process identifier for the shell and its parent process are exported.
This requires bash version 4 or later.
A brief description of the pmdabash command line options follows:
-d It is absolutely crucial that the performance metrics domain number specified here is unique and consistent. That is, domain should
be different for every PMDA on the one host, and the same domain number should be used for the same PMDA on all hosts.
-l Location of the log file. By default, a log file named bash.log is written in the current directory of pmcd(1) when pmdabash is
started, i.e. $PCP_LOG_DIR/pmcd. If the log file cannot be created or is not writable, output is written to the standard error
instead.
-s Amount of time (in seconds) between subsequent evaluations of the shell trace file descriptor(s). The default is 2 seconds.
-m Maximum amount of memory to be allowed for each event queue (one per traced process). The default is 2 megabytes.
-U User account under which to run the agent. The default is the unprivileged "pcp" account in current versions of PCP, but in older
versions the superuser account ("root") was used by default.
INSTALLATION
In order for a host to export the names, help text and values for the bash performance metrics, do the following as root:
# cd $PCP_PMDAS_DIR/bash
# ./Install
As soon as an instrumented shell script (see INSTRUMENTATION selection below) is run, with tracing enabled, new metric values will appear -
no further setup of the agent is required.
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/bash
# ./Remove
pmdabash is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is
installed or removed.
INSTRUMENTATION
In order to allow the flow of event data between a bash(1) script and pmdabash, the script should take the following actions:
#!/bin/sh
source $PCP_DIR/etc/pcp.sh
pcp_trace on $@ # enable tracing
echo "awoke, $count"
pcp_trace off # disable tracing
The tracing can be enabled and disabled any number of times by the script. On successful installation of the agent, several metrics will
be available:
$ pminfo bash
bash.xtrace.numclients
bash.xtrace.maxmem
bash.xtrace.queuemem
bash.xtrace.count
bash.xtrace.records
bash.xtrace.parameters.pid
bash.xtrace.parameters.parent
bash.xtrace.parameters.lineno
bash.xtrace.parameters.function
bash.xtrace.parameters.command
When an instrumented script is running, the generation of event records can be verified using the pmevent(1) command, as follows:
$ pmevent -t 1 -x '' bash.xtrace.records
host: localhost
samples: all
bash.xtrace.records["4538 ./test-trace.sh 1 2 3"]: 5 event records
10:00:05.000 --- event record [0] flags 0x19 (point,id,parent) ---
bash.xtrace.parameters.pid 4538
bash.xtrace.parameters.parent 4432
bash.xtrace.parameters.lineno 43
bash.xtrace.parameters.command "true"
10:00:05.000 --- event record [1] flags 0x19 (point,id,parent) ---
bash.xtrace.parameters.pid 4538
bash.xtrace.parameters.parent 4432
bash.xtrace.parameters.lineno 45
bash.xtrace.parameters.command "(( count++ ))"
10:00:05.000 --- event record [2] flags 0x19 (point,id,parent) ---
bash.xtrace.parameters.pid 4538
bash.xtrace.parameters.parent 4432
bash.xtrace.parameters.lineno 46
bash.xtrace.parameters.command "echo 'awoke, 3'"
10:00:05.000 --- event record [3] flags 0x19 (point,id,parent) ---
bash.xtrace.parameters.pid 4538
bash.xtrace.parameters.parent 4432
bash.xtrace.parameters.lineno 47
bash.xtrace.parameters.command "tired 2"
10:00:05.000 --- event record [4] flags 0x19 (point,id,parent) ---
bash.xtrace.parameters.pid 4538
bash.xtrace.parameters.parent 4432
bash.xtrace.parameters.lineno 38
bash.xtrace.parameters.function "tired"
bash.xtrace.parameters.command "sleep 2"
FILES
$PCP_PMCDCONF_PATH
command line options used to launch pmdabash
$PCP_PMDAS_DIR/bash/help
default help text file for the bash metrics
$PCP_PMDAS_DIR/bash/Install
installation script for the pmdabash agent
$PCP_PMDAS_DIR/bash/Remove
undo installation script for pmdabash
$PCP_LOG_DIR/pmcd/bash.log
default log file for error messages and other information from pmdabash
PCP ENVIRONMENT
Environment variables with the prefix PCP_ are used to parameterize the file and directory names used by PCP. On each installation, the
file /etc/pcp.conf contains the local values for these variables. The $PCP_CONF variable may be used to specify an alternative configura-
tion file, as described in pcp.conf(5).
SEE ALSO
bash(1), pmevent(1) and pmcd(1).
Performance Co-Pilot PCP PMDABASH(1)