The order of redirection is important because if the duplication happens from 2 to 1 before redirection of 1, error output is redirected to fd1 ( stdout ) and standard output is redirected elsewhere. On the other hand if it happens afterwards the duplication is to "the same place as standard output"
I have an application which has a lot of cout & cerr statements.
This application also opens a log file (for eg a.log).
When this application is run from the inittab file as follows
/bin/sh -c " . /etc/timezone; exec /test"
all the cout & cerr statements are printed in the log file... (1 Reply)
Hello Everyone,
I have an option for users in my shell script to create log file. So if user saying “yes” on it, I'm redirecting all output to log file by doing this: > /output.log. However I would like the output being displayed on the screen at the same time. Is it possible? If yes, does anybody... (2 Replies)
hi all,
i do search for a file in solaris box in the following format
find / -name 'file' -print 2>/dev/null
i tried the same thing on AIX box;
as i am searching from the root the same way i redirected the errors to /dev/null but find is showing strip off errors and when i just continued... (1 Reply)
HI all,
I want to capture cpu data in batch mode of "top" command and redirect to a file like this:
top -b > cpu.dat
it works!
But I want to capture only Cpu lines, so i have:
top -b | grep ^Cpu >cpu.dat
Then I got an empty output file.
Why?
Could somebody explain and help me to make it... (15 Replies)
I want to execute a command something like:
find / -name "jni.h"
and I want to direct the output of that command to some type of
filter that will leave out all the lines reporting inaccessible
directories (permission unavailable). Is this a pipe or a redirect?
For example, output like... (1 Reply)
Hi all,
I would like to store the output of a command in a variable and output it to the console at the same time. This is working fine using the following construct
var=`command | tee /dev/tty`
I use this in some scripts to display the output of the command on the console and, at the same... (2 Replies)
Hi,
Pls check that '|' and '+' present in Step-1 are not copied to log file in Step-3.
Pls suggest how to get the exact output from Step-1 (i.e. with out losing '|' and '+') in to a log file
~Thanks
Step-1: Execute command
> mysql -utest -ptest -htesthost testdb -e "select * from... (3 Replies)
Hi All,
Please could anyone advise what the purpose of the dot syntax in the following command means:
tar -cvf ${WORKING_BACKUP_ROOT}/${TAR_ARCHIVE_FILE} . >/${BACKUP_ROOT}/${ARCHIVE_LOG}
Many thanks (2 Replies)
Hi
echo " username "
read username
echo "password"
stty -echo
read password
stty echo
through read i am taking standard input and redirecign them to a file
echo " username=${username}/${password} " > file.lst
now from the same shell script i want to delete the password (i.e... (4 Replies)
Discussion started by: rosheks
4 Replies
LEARN ABOUT DEBIAN
grc
GRC(1) General Commands Manual GRC(1)NAME
grc - frontend for generic colouriser grcat(1)SYNOPSIS
grc [options] command [args]
DESCRIPTION
grc will execute command command with optional parameters [args] piping its stdout or stderr into grcat, with apropriate configuration
file.
Configuration file for grc is determined by /etc/grc.conf file.
Format of /etc/grc.conf: each entry consists of 2 lines, between entries there can be any number of empty lines or lines beginning with #
(comments)
First line is regular expression, second line the name of configuration file for grcat.
Configuration file after the first regular expression matching command [args] will be passed to grcat as its configuration file
OPTIONS --help Show summary of options.
--version
Display version.
-e --stderr
Redirect error output. Unless -s is selected as well, this cancels redirection of standard output via grcat
-s --stdout
Redirect standard output. Used to redirect standard output together with --stderr option.
--colour=x
x is one of on off auto
--colour=on will colourise (default)
--colour=off will just execute command without colourising.
--colour=auto will test if standard output is a tty, and colourise only when it is.
SEE ALSO grcat(1)AUTHOR
Written by Radovan Garabik <garabik @ kassiopeia.juls.savba.sk>
GRC(1)