10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
OS version: RHEL 7.4
Shell : bash
I would like to capture command outputs using tee like # yum upgrade | tee yumupgradeLog
But, if I use tee command, I cannot respond to prompts like Is this ok : during command execution as shown below.
Is there a way I could use tee and still be able to... (4 Replies)
Discussion started by: kraljic
4 Replies
2. UNIX for Dummies Questions & Answers
Team,
we use below command to store the contents in a logfile.
cat a.txt > a.log
a.txt content is
123
345
Is there any options available to store the command used also?
for eg a.log may show as
cat a.txt
123
345 (5 Replies)
Discussion started by: sid2013
5 Replies
3. Shell Programming and Scripting
Hi All,
Hoping you can help as im in desperate need... I'm very new to unix scripting so apoligies,
I have setup an expect script in order to log into a node on our network, This will provide an output as per the below
*********** information:
*************: n/a
TEST IP : n/a
... (18 Replies)
Discussion started by: mutley2202
18 Replies
4. Shell Programming and Scripting
Hi
Is there a way that I can capture a shell script (both output and input) to a log file where I can analyze it?
Thanks (6 Replies)
Discussion started by: nimo
6 Replies
5. Shell Programming and Scripting
Hi,
When I run the following command in terminal it works. The string TEST is appended to a file silently.
echo TEST | tee -a file.txt &>/dev/null
However, when I paste this same line to a file, say shell1.sh, and use bourne shell .
I run this file in terminal, ./shell1.sh.
However I... (1 Reply)
Discussion started by: shahanali
1 Replies
6. UNIX for Dummies Questions & Answers
ok,
suppose i have a file called f1
$ cat f1
this is file1
the quick brown fox jumped over the lazy dog
this is file1
who let the dogs out
this is unix
this is file1
and i have another file f2
$ cat f2
this is file2
the task is to eliminate the repeated lines in f1 and add the... (11 Replies)
Discussion started by: c_d
11 Replies
7. Shell Programming and Scripting
Hi,
I would like to process, filter the same ASCII asynchronous live data stream in more than one pipe pipeline.
So the one pipeline should filter out some records using grep key word
and more than one pipes pipelines
each should grep for another key words, each set seperately for each... (5 Replies)
Discussion started by: jack2
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8. Shell Programming and Scripting
Hi,
Is there anyway to duplicate output without using tee?
Let me explain the problem.
We are use ssh to login to remote server and save output to a file using tee commands for auditing purposes. When we use vi editor in ssh session, letters get garbled and cant really use vi. Without tee it... (7 Replies)
Discussion started by: eagles1
7 Replies
9. Shell Programming and Scripting
I have a program that can be run in terminal, when its run it either returns SSH OK or CRITICAL, how do i use the output in my script?
good
./check_sh myserver
SSH OK
bad
./check_sh myserver
CRITICAL
I want to store it in a variable btw, SSH OK will give the variable $SSH=1 and if its... (1 Reply)
Discussion started by: aspect_p
1 Replies
10. Shell Programming and Scripting
Hi,
Can anyone please tell me what these lines do?
ls >& outfile
ls outfile 2>&1
Thanks. (1 Reply)
Discussion started by: trivektor
1 Replies
Tee(3pm) User Contributed Perl Documentation Tee(3pm)
NAME
IO::Tee - Multiplex output to multiple output handles
SYNOPSIS
use IO::Tee;
$tee = IO::Tee->new($handle1, $handle2);
print $tee "foo", "bar";
my $input = <$tee>;
DESCRIPTION
"IO::Tee" objects can be used to multiplex input and output in two different ways. The first way is to multiplex output to zero or more
output handles. The "IO::Tee" constructor, given a list of output handles, returns a tied handle that can be written to. When written to
(using print or printf), the "IO::Tee" object multiplexes the output to the list of handles originally passed to the constructor. As a
shortcut, you can also directly pass a string or an array reference to the constructor, in which case "IO::File::new" is called for you
with the specified argument or arguments.
The second way is to multiplex input from one input handle to zero or more output handles as it is being read. The "IO::Tee" constructor,
given an input handle followed by a list of output handles, returns a tied handle that can be read from as well as written to. When
written to, the "IO::Tee" object multiplexes the output to all handles passed to the constructor, as described in the previous paragraph.
When read from, the "IO::Tee" object reads from the input handle given as the first argument to the "IO::Tee" constructor, then writes any
data read to the output handles given as the remaining arguments to the constructor.
The "IO::Tee" class supports certain "IO::Handle" and "IO::File" methods related to input and output. In particular, the following methods
will iterate themselves over all handles associated with the "IO::Tee" object, and return TRUE indicating success if and only if all
associated handles returned TRUE indicating success:
close
truncate
write
syswrite
format_write
formline
fcntl
ioctl
flush
clearerr
seek
The following methods perform input multiplexing as described above:
read
sysread
readline
getc
gets
eof
getline
getlines
The following methods can be used to set (but not retrieve) the current values of output-related state variables on all associated handles:
autoflush
output_field_separator
output_record_separator
format_page_number
format_lines_per_page
format_lines_left
format_name
format_top_name
format_line_break_characters
format_formfeed
The following methods are directly passed on to the input handle given as the first argument to the "IO::Tee" constructor:
input_record_separator
input_line_number
Note that the return value of input multiplexing methods (such as "print") is always the return value of the input action, not the return
value of subsequent output actions. In particular, no error is indicated by the return value if the input action itself succeeds but
subsequent output multiplexing fails.
EXAMPLE
use IO::Tee;
use IO::File;
my $tee = new IO::Tee(*STDOUT,
new IO::File(">tt1.out"), ">tt2.out");
print join(' ', $tee->handles), "
";
for (1..10) { print $tee $_, "
" }
for (1..10) { $tee->print($_, "
") }
$tee->flush;
$tee = new IO::Tee('</etc/passwd', *STDOUT);
my @lines = <$tee>;
print scalar(@lines);
AUTHOR
Chung-chieh Shan, ken@digitas.harvard.edu
COPYRIGHT
Copyright (c) 1998-2001 Chung-chieh Shan. All rights reserved. This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
SEE ALSO
perlfunc, IO::Handle, IO::File.
perl v5.12.3 2001-03-10 Tee(3pm)