...
I want to re-direct all the output from the command to a file (@result = `$cmd`), but I ALSO want the results to be displayed on the screen (system("$cmd");
...
Any easy way to do this in perl?
...
You may want to check out the "Tee" module - Perl's implementation of the "tee" command.
Does anyone can write a thread to teach me how to install Windows 2000, RH Linux, and FreeBSD unix in one machine step by step? Or someone's already done with this topic? (1 Reply)
hi, all,
i saw a syntax like this
usr/local/mpiexec -np 8 /home/XXXX/program_exe >& ./temp/out
the output will be put into ./temp/out.
I want to know the meaning of the operation symbol '>&'.
Thanks (3 Replies)
Hi Everyone,
i have a string 00:44:40
so:
$tmp=~ s/://gi;
$tmp=~s/({2})({2})({2})/$1*3600+$2*60+$3/e;
the output is 2680.
Any way to combine this two lines into a single line?
Thanks (4 Replies)
When trying to use backticks for system commands, is there a way to read the error messages if a command doesn't execute properly?
I have no problem getting the results if the command is properly executed.
Ex.
my @result = `dir`;
foreach my $line (@result) {
print "Result = $line";... (2 Replies)
Am actually am new to the linux operating system and knda wana knw more about it.Please could u help me with some commands so i can start with that first.Really need your help (5 Replies)
I am trying to enter a third column in this file, but the third column should that I call "Math" perform a some math calculations based on the value found in column #2.
Here is the input file:
Here is the desired output:
Output
GERk0203078$ Levir Math
Cotete_1... (5 Replies)
I can get my AIX servers to show up in SCOM but I'm struggling with running personal scripts and have the result of these scripts show up in SCOM.
I'm currently using BigBrother and I've written some scripts for BB. I would like to convert these scripts to something that can be used in SCOM.
... (0 Replies)
Hi All,
I want to display the distinct values in the file and for each distinct value how may occurance or there.
Test data:
test1.dat
20121105
20121105
20121105
20121105
20121106
20121106
20121106
20121105
I need to display the output like
Output (2 Replies)
Discussion started by: bbc17484
2 Replies
LEARN ABOUT NETBSD
ng_tee
NG_TEE(4) BSD Kernel Interfaces Manual NG_TEE(4)NAME
ng_tee -- netgraph ``tee'' node type
SYNOPSIS
#include <sys/types.h>
#include <netgraph/ng_tee.h>
DESCRIPTION
The tee node type has a purpose similar to the tee(1) command. Tee nodes are useful for debugging or ``snooping'' on a connection between
two netgraph nodes. Tee nodes have four hooks, right, left, right2left, and left2right. All data received on right is sent unmodified to
both hooks left and right2left. Similarly, all data received on left is sent unmodified to both right and left2right.
Packets may also be received on right2left and left2right; if so, they are forwarded unchanged out hooks right and left, respectively.
HOOKS
This node type supports the following hooks:
right The connection to the node on the right.
left The connection to the node on the left.
right2left Tap for right to left traffic.
left2right Tap for left to right traffic.
CONTROL MESSAGES
This node type supports the generic control messages, plus the following.
NGM_TEE_GET_STATS
Get statistics, returned as a struct ng_tee_stats.
NGM_TEE_CLR_STATS
Clear statistics.
SHUTDOWN
This node shuts down upon receipt of an NGM_SHUTDOWN control message, or when all hooks have been disconnected. If both right and left hooks
are present, node removes itself from the chain gently, connecting right and left together.
SEE ALSO tee(1), netgraph(4), ngctl(8)HISTORY
The ng_tee node type was implemented in FreeBSD 4.0.
AUTHORS
Julian Elischer <julian@FreeBSD.org>
BSD May 28, 2004 BSD