10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi
I have 1000 files labelled data1.txt through data1000.txt. I want to write a script that prints out the number of lines in each txt file and outputs it in the following format:
Column 1: number of data file (1 through 1000)
Column 2: number of lines in the text file
Thanks! (2 Replies)
Discussion started by: evelibertine
2 Replies
2. Shell Programming and Scripting
I want to write a Perl script that manipulates multiple files. In the directory, I have files 250.*chr$.ped where * is from 1 to 1000 and $ is from 1-22 for a total of 22 x 10,000 = 22,000 files.
I want to write a script that only manipulates files 250.1chr*.ped where * is from 1 to 22.... (10 Replies)
Discussion started by: evelibertine
10 Replies
3. UNIX for Dummies Questions & Answers
I have a script where the the 9th line looks like this:
$filename=sprintf("250.1chr%d.ped", $N);
I want to modify this script 1000 times, changing 250.1chr%d.ped to 250.2chr%d.ped, 250.3chr%.ped.......and so on all the way to 250.1000chr%d.ped and store each output in files called
... (4 Replies)
Discussion started by: evelibertine
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4. UNIX for Dummies Questions & Answers
Hi
Here is my script that calls my awk script
#!/bin/bash
set -x
dir="/var/local/dsx/csv"
testfile="$testfile"
while getopts " f: " option
do
case $option in
f ) testfile="$OPTARG";;
esac;
done
./scriptFile --testfile=$testfile >> $dir/$testfile.csv
It calls my awk... (1 Reply)
Discussion started by: ladyAnne
1 Replies
5. Shell Programming and Scripting
I would like to find whether a file exists in the UNIX machine. That i can check using
if ;then
echo "exists"
echo " `cat $file` "
else
echo "invalid file"
fi.
and i can find out using :
find / -name "filename" . But it i have wanted to search in all directories. How to get... (3 Replies)
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6. Shell Programming and Scripting
can anyone help me in writing script in UNIX for copying files in two server from the third server after checking the files in the third server and if there is anything new in the third server automatically it should be added to the rest of the two servers and if same file is existing in the two... (4 Replies)
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7. Shell Programming and Scripting
I'm getting the following errors when I try to write a script to unzip some zip files. When I use the free trial copy of the commerical winzip program, however, they work fine. When I use -l or -t on unzip it indicates no errors. When I use the -o switch interactively from the bash command line it... (1 Reply)
Discussion started by: siegfried
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8. Shell Programming and Scripting
I am new to shell scripting and would appreciate any help I can get.
I need to write a Unix shell script that I will run whenever I have a tar file to uncompress(Korn shell). Please put in mind that I have different environements that I will run it on.
Thanks in advance ;) (4 Replies)
Discussion started by: nkem22
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9. Shell Programming and Scripting
Hi there,
I am trying to do somehting similar, but on a wider scale.
I am trying to write a script that would open the home directory, open the first (of 650) user's folder
open the ?mail directory, which every user has
Then I need the script to read each of the files and folder names with... (2 Replies)
Discussion started by: technett
2 Replies
10. Shell Programming and Scripting
I have a problem with syntax methinks, when it comes to sed.
This is my script for a user to type sed commands:-
yes=y
function writefunction
{
$tool $command $newfilename $filename
}
echo
echo
echo "1. Type the name of the tool you are using i.e sed."
read tool
echo... (3 Replies)
Discussion started by: Trufla
3 Replies
RRDp(3pm) User Contributed Perl Documentation RRDp(3pm)
NAME
RRDp - Attach RRDtool from within a perl script via a set of pipes;
SYNOPSIS
use RRDp
RRDp::start path to RRDtool executable
RRDp::cmd rrdtool commandline
$answer = RRD::read
$status = RRD::end
$RRDp::user, $RRDp::sys, $RRDp::real, $RRDp::error_mode, $RRDp::error
DESCRIPTION
With this module you can safely communicate with the RRDtool.
After every RRDp::cmd you have to issue an RRDp::read command to get RRDtools answer to your command. The answer is returned as a pointer,
in order to speed things up. If the last command did not return any data, RRDp::read will return an undefined variable.
If you import the PERFORMANCE variables into your namespace, you can access RRDtool's internal performance measurements.
use RRDp
Load the RRDp::pipe module.
RRDp::start path to RRDtool executable
start RRDtool. The argument must be the path to the RRDtool executable
RRDp::cmd rrdtool commandline
pass commands on to RRDtool. Check the RRDtool documentation for more info on the RRDtool commands.
Note: Due to design limitations, RRDp::cmd does not support the "graph -" command - use "graphv -" instead.
$answer = RRDp::read
read RRDtool's response to your command. Note that the $answer variable will only contain a pointer to the returned data. The
reason for this is, that RRDtool can potentially return quite excessive amounts of data and we don't want to copy this around in
memory. So when you want to access the contents of $answer you have to use $$answer which dereferences the variable.
$status = RRDp::end
terminates RRDtool and returns RRDtool's status ...
$RRDp::user, $RRDp::sys, $RRDp::real
these variables will contain totals of the user time, system time and real time as seen by RRDtool. User time is the time RRDtool
is running, System time is the time spend in system calls and real time is the total time RRDtool has been running.
The difference between user + system and real is the time spent waiting for things like the hard disk and new input from the Perl
script.
$RRDp::error_mode and $RRDp::error
If you set the variable $RRDp::error_mode to the value 'catch' before you run RRDp::read a potential ERROR message will not cause
the program to abort but will be returned in this variable. If no error occurs the variable will be empty.
$RRDp::error_mode = 'catch';
RRDp::cmd qw(info file.rrd);
print $RRDp::error if $RRDp::error;
EXAMPLE
use RRDp;
RRDp::start "/usr/local/bin/rrdtool";
RRDp::cmd qw(create demo.rrd --step 100
DS:in:GAUGE:100:U:U
RRA:AVERAGE:0.5:1:10);
$answer = RRDp::read;
print $$answer;
($usertime,$systemtime,$realtime) = ($RRDp::user,$RRDp::sys,$RRDp::real);
SEE ALSO
For more information on how to use RRDtool, check the manpages.
AUTHOR
Tobias Oetiker <tobi@oetiker.ch>
perl v5.14.2 2012-01-24 RRDp(3pm)