Both, STDERR (2) and STDOUT (1) are redirected to nowhere. It's practical when you just want to check the return status of preceding command and don't want to see any output e.g. STDOUT or STDERR.
Edit: Small improvement of my previous answer for better understanding: Redirect STDOUT to /dev/null respectively don't show output;redirect STDERR to STDOUT
Last edited by pseudocoder; 05-17-2010 at 06:29 PM..
Dear Experts,
I put below command-
could you please describe the outputs column-
let me describe some them-
col_1: (10.131.60.48.55880) The IP address of the local computer and the port number being used for this particular connection appear in the Local Address column.
col_2:... (3 Replies)
Suppose I have a file named a
When I write
cat a>a
The following error message is displayed
cat: a: input file is output file
and my file a is truncated to zero size.
Also the exit status of the last command is 1
Can someone tell me what actually happens when I do so? (1 Reply)
Hello bash experts.,
I was doing some experimentations to better understand the following redirection.,
$Output = `sh -c \"$Cmd 2>&1 1>&2\"`;
It is actually the line used in one of the perl program, but the technique i am trying to understand is related to shell scripting.
So is there... (5 Replies)
I'm redirecting the output of a command to a logfile, however, if the user is on a terminal I would also like the output to be displayed on the screen.
tar tvf some_tarfile >Logfile
if the user is on a term then have the output to the Logfile and also be displayed on the screen at the same... (2 Replies)
Hi there
I have a script that runs but it outputs everything onto the screen instead of a file.
I've tried using the > outputfile.txt however all it does is dump the output to the screen and creates an outputfile.txt but doesn't put anything in that file.
Any help would be appreciated
... (6 Replies)
We have an application here that does some table queries and then prints the result on screen. I do not have the code of this application (which i will just call "queryCommand"), but what it does is that you call it with some parameters and it prints some info about the query and then the... (5 Replies)
Hello i am trying to write a script that will redirect the output to a certain file. Here is the code so far:
#!/bin/bash
ps -e | sort | more > psfile
When I execute the script nothing happens since i assume the output was redirected to the file called psfile. When I try to look at the... (1 Reply)
Hi
I am making a script where i want to redirect the output of ls -l to a file
Example
#ls -l fil1.txt > /opt/temp/a.txt
ac: No such file or directory
I want to capture output of this command
like here output is
ac: No such file or directory
can anyone help (4 Replies)
Hi all
I was wondering if there was a slicker way of doing this without the file -
awk '{print $2}' FS=":" "${FILE}" > "${TMPFILE}"
{
read M_GRP_ID || m_fail 1 "Error: Read failed 1 (${FUNCNAME})"
read M_GRP_WAIT || m_fail 1 "Error: Read failed 2 (${FUNCNAME})"
}... (6 Replies)
Hi All,
i have below for loop of which i am trying to redirect output in a file:
for i in `/usr/sbin/ifconfig -a | awk '/flags/ {print $1}' | grep -v lo | sed 's/://g'`
do
ifconfig $i dhcp status
done >> /tmp/logfile
but instead the output is appearing as stdout on screen rather than... (12 Replies)
Discussion started by: omkar.jadhav
12 Replies
LEARN ABOUT DEBIAN
colorgccrc
COLORGCCRC(5) File Formats Manual COLORGCCRC(5)NAME
colorgccrc - configuration file for colorgcc
DESCRIPTION
A colorgccrc configuration file is used to configure the highlighting of the compiler output from colorgcc.
SYNTAX
Each line consists of a keyword designating a configuration variable. The keyword is followed by `:' and then one or several values
(depending on the keyword). Lines beginning with a hash mark `#' are comments.
CONFIGURATION VARIABLES
g++ | gcc | c++ | cc | g77 | gcj | gnat | gpc
Specifies the paths to the compilers. Takes one value; a path to the compiler.
nocolor
Specifies what terminal types colorization should be disabled on. Takes one or several values, separated by whitespace.
srcColor
Specifies the highlighting attributes source-code should be given. Takes one or several color attributes. See the section COLOR
ATTRIBUTES for more information.
introColor
Specifies the highlighting attributes for normal compiler output. Takes one or several color attributes. See the section COLOR
ATTRIBUTES for more information.
warningFileNameColor | errorFileNameColor
Specifies the highlighting attributes for the filename in a warning or an error, respectively. Takes one or several color
attributes. See the section COLOR ATTRIBUTES for more information.
warningNumberColor | errorNumberColor
Specifies the highlighting attributes for the line-number in a warning or an error, respectively. Takes one or several color
attributes. See the section COLOR ATTRIBUTES for more information.
warningMessageColor | errorMessageColor
Specifies the highlighting attributes for the message-text in a warning or an error, respectively. Takes one or several color
attributes. See the section COLOR ATTRIBUTES for more information.
COLOR ATTRIBUTES
The following attributes are valid for highlighting.
clear, reset
bold, underline, underscore, blink, reverse, concealed
black, red, green, yellow, blue, magenta, cyan, white
on_black, on_red, on_green, on_yellow, on_blue, on_magenta, on_cyan, on_white
SEE ALSO gcc(1), colorgcc(1)HISTORY
Jan 15 2003: Initial version of this manual-page.
REPORTING BUGS
Report bugs to <jmoyers@geeks.com>
AUTHORS
Jamie Moyers <jmoyers@geeks.com> is the author of colorgcc.
This manual page was written by Joe Wreschnig <piman@sacredchao.net>, and modified by David Weinehall <tao@debian.org>, for the Debian
GNU/Linux system (but may be used by others).
COPYRIGHT
Copyright (C) 2003 Jamie Moyers
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
Jan 15, 2003 COLORGCCRC(5)