Sponsored Content
Top Forums Shell Programming and Scripting Perl: combine Backtick & system() I/O operation? Post 302425838 by jeffw_00 on Sunday 30th of May 2010 04:37:25 PM
Old 05-30-2010
pseudocoder - that looks like it would work, but I wonder when the command is actually executed. If it's executed during the OPEN and then hangs, I don't think it will ever get to the first print statement?

thanks though

I will look into downloading tee - adding packages is new to me though
/j
===================
Update - you know - I think what I'm looking for doesn't exist
tee($command,@array) where the output of the command goes to STDOUT and into the @array. all the Tee that I can find at CPAN writes the output to -files-. I suppose I could create a temp file and then read it back in, but that's sort of inelegant?

am I missing something here?

thanks!
/j
 

10 More Discussions You Might Find Interesting

1. UNIX Desktop Questions & Answers

Multi operation system in one pc.

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)
Discussion started by: HOUSCOUS
1 Replies

2. Ubuntu

where can i get the unix operation system?

I am a stranger here ,where can i get the operation for free.thank you! (2 Replies)
Discussion started by: tcb3210
2 Replies

3. UNIX for Dummies Questions & Answers

what does the operation '>&' mean in a shell script

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)
Discussion started by: cy163
3 Replies

4. Shell Programming and Scripting

combine two perl lines into a single perl command

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)
Discussion started by: jimmy_y
4 Replies

5. Shell Programming and Scripting

Perl: Backtick Errors

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)
Discussion started by: kooshi
2 Replies

6. Linux

commands of linux operation system

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)
Discussion started by: GODBLESSME
5 Replies

7. UNIX for Dummies Questions & Answers

system calls and atomic operation

Are system calls atomic operations? Is a system call can be interrupted? (2 Replies)
Discussion started by: vistastar
2 Replies

8. Shell Programming and Scripting

Enter third column & Perform Operation

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)
Discussion started by: Ernst
5 Replies

9. AIX

Monitoring AIX with System Center Operation Manager 2007 R2

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)
Discussion started by: petervg
0 Replies

10. Shell Programming and Scripting

Help me to perform count & group by operation in shell scripting?

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
tee(1)								   User Commands							    tee(1)

NAME
tee - replicate the standard output SYNOPSIS
/usr/bin/tee /usr/bin/tee [-ai] [file]... ksh93 tee [-ail] [file]... DESCRIPTION
/usr/bin/tee /usr/bin/tee copies standard input to standard output, making a copy in zero or more files. tee does not buffer its output. The options determine if the specified files are overwritten or appended to. ksh93 The tee built-in in ksh93 is associated with the /bin and /usr/bin paths. It is invoked when tee is executed without a pathname prefix and the pathname search finds a /bin/tee or /usr/bin/tee executable. tee copies standard input to standard output and to zero or more files. The options determine whether the specified files are overwritten or appended to. The tee utility does not buffer output. If a write to a file fails, tee continues to write to other files although it exits with a non-zero exit status. The number of file operands that can be specified is limited by the underlying operating system. OPTIONS
/usr/bin/tee The following options are supported by /usr/bin/tee: -a Appends the output to the files rather than overwriting them. -i Ignores interrupts. ksh93 The following options are supported by the tee built-in command in ksh93: -a Appends the output to the files rather than overwriting them. --append -i Ignores SIGINT signal. --ignore-interrupts -l Sets the standard output to be line buffered. --line-buffer OPERANDS
The following operands are supported: file A path name of an output file. Processing of at least 13 file operands are supported. USAGE
See largefile(5) for the description of the behavior of tee when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of tee: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
/usr/bin/tee The following exit values are returned by /usr/bin/tee: 0 The standard input was successfully copied to all output files. >0 The number of files that could not be opened or whose status could not be obtained. ksh93 The following exit values are returned by tee in ksh93: 0 Successful completion. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin/tee +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |Standard |See standards(5). | +-----------------------------+-----------------------------+ ksh93 +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |See below. | +-----------------------------+-----------------------------+ The ksh93 built-in binding to /bin and /usr/bin is Volatile. The built-in interfaces are Uncommitted. SEE ALSO
cat(1), ksh93(1), attributes(5), environ(5), largefile(5), standards(5) SunOS 5.11 20 Nov 2007 tee(1)
All times are GMT -4. The time now is 03:06 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy