Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: [stdin / stdout] Strategies for redirecting outputs
Top Forums Shell Programming and Scripting [stdin / stdout] Strategies for redirecting outputs Post 302995679 by Don Cragun on Monday 10th of April 2017 02:34:47 PM
Old 04-10-2017
Since this isn't a homework assignment, this is a perfectly reasonable forum for this question.

Have you looked at the man page for the logger utility on your system?

Do you really want output from your script to be physically directed to the console when you specify that the output should go to the console, or do you just want output you specified as going to the console to be sent to the script's standard output (so whoever invokes your script can redirect the output wherever they want it to go)?

If you want output to appear in two places, you should consider looking at the man page for the tee utility.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Redirecting to stdin

Hi, I'm having trouble with my script. I have to select different choices without any interaction from a menu that looks like : a - xxxxxxxxxxxxxx b - xxxxxxxxxxxxxx c - xxxxxxxxxxxxxx d - xxxxxxxxxxxxxx I tried things like : echo "a" >&0 read < echo "a" but none worked. Any... (4 Replies)
Discussion started by: flame_eagle
4 Replies

2. Programming

stdout/stdin + flushing buffers

Hi all I've run into a snag in a program of mine where part of what I entered in at the start of run-time, instead of the current value within printf() is being printed out. After failing with fflush() and setbuf(), I tried the following approach void BufferFlusher() { int in=0;... (9 Replies)
Discussion started by: JamesGoh
9 Replies

3. UNIX for Dummies Questions & Answers

Redirecting several outputs to /dev/stdout

I have an executable that, depending on its input, outputs to either one file or several. It usually prints nothing on screen. The usual way to call this program is to specify an input and output filenames, like this: ./executable.exe -i inputfile -o outputfileIt will then try to use the output... (1 Reply)
Discussion started by: aplaydoc
1 Replies

4. Shell Programming and Scripting

Redirecting stdin from fd 3-9?

Hi I'm trying to do something on the bash command line that I will later put into a bash shell script. I'm trying to take a program that reads stdin (using getline) and be able to keep it running in the background and fire "commands" to it. So what I thought I should do was to try taking... (3 Replies)
Discussion started by: niceguyeddie
3 Replies

5. UNIX for Dummies Questions & Answers

Redirect stdin stdout to multiple files

Hi, i know how to a) redirect stdout and stderr to one file, b) and write to two files concurrently with same output using tee command Now, i want to do both the above together. I have a script and it should write both stdout and stderr in one file and also write the same content to... (8 Replies)
Discussion started by: ysrini
8 Replies

6. Shell Programming and Scripting

can't close stdin/stdout in shell

#!/bin/sh exec 0</dev/null exec 1>/dev/null ls -l /proc/self/fd >&2 produces total 0 lr-x------ 1 tyler users 64 Feb 18 10:38 0 -> /proc/7886/fd lrwx------ 1 tyler users 64 Feb 18 10:38 1 -> /dev/pts/4 lrwx------ 1 tyler users 64 Feb 18 10:38 2 -> /dev/pts/4 I've verified the shell is... (10 Replies)
Discussion started by: Corona688
10 Replies

7. Shell Programming and Scripting

Redirecting stdin/stdout to/from command from/to string

Hi, I am working on a project where I have to generate and execute nasm code on-the-fly. I generate the code in a file program.asm and then execute it.This output is to stdout which i redirect to an output file which i read back to compare results: system("nasm -f elf program.asm >... (5 Replies)
Discussion started by: doc_cypher
5 Replies

8. Programming

read and write stdin/stdout in unix

Hi, i am using the below program to read from the standard input or to write to standard out put. i know that using highlevel functions this can be done better than what i have done here. i just want to know is there any other method by which i find the exact number of characters ( this... (3 Replies)
Discussion started by: MrUser
3 Replies

9. UNIX for Dummies Questions & Answers

multiple variables assignement (stdout/stderr outputs)

Hi all, I've been looking around for this for a while and can't seem to find a satifactory way to do what I want: I would like to assign the output of stdout to a variable and that of stderr to another one, and this without using temporary files/named pipes. In other words be able to assign... (4 Replies)
Discussion started by: anthalamus
4 Replies

10. UNIX for Dummies Questions & Answers

STDIN and STDOUT

Hallo, i have a script like: if ;then echo "OK" else echo "ERROR $2 is missing" fi; if ;then touch $2 fi; if ;then cat $1 | grep xy > $2 (1 Reply)
Discussion started by: eightball
1 Replies

LEARN ABOUT XFREE86

sysmsg

sysmsg(7D)							      Devices								sysmsg(7D)

NAME

       sysmsg - system message routing to console devices

SYNOPSIS

       /dev/sysmsg

DESCRIPTION

       The  file  /dev/sysmsg routes output to a variable set of console devices.  Writes to /dev/sysmsg are always directed to the system console
       /dev/console, and are in addition directed to a set of auxiliary console devices managed by consadm(1M).

       Only root has permission to write to this device.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsr			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Stable			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       consadm(1M), syslogd(1M) , attributes(5), console(7D)

SunOS 5.10							    13 Oct 1998 							sysmsg(7D)
All times are GMT -4. The time now is 03:23 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy