02-03-2012
It may be desirable or necessary at times to get rid of standard error in this way, but in the case you point to, "proper" would be to fix the code.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I'm a beginner so I might make beginner mistakes.
I want to count the "#define" directives in every .C file
I get the following errors:
./lab1.sh: line 5: ndef: command not found
./lab1.sh: line 6:
#!/bin/sh
for x in *.
do
ndef = 'grep -c \#define $x'
if ; then
... (2 Replies)
Discussion started by: dark_knight
2 Replies
2. Shell Programming and Scripting
dear members,
I am having some difficulties with an automation script that I am writing.
We have equipments deployed over our network that generate status messages and I was trying an automated method to collect all information.
I did a expect script that telnet all devices, logs, asks for... (4 Replies)
Discussion started by: jorlando
4 Replies
3. Shell Programming and Scripting
I created a bash script that ran fine for awhile on a nightly crontab but then started crashing with commands not found, so I added
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/home/homedir/scripts/myscriptdir
export PATH
and now I don't get those errors, but... (2 Replies)
Discussion started by: unclecameron
2 Replies
4. Fedora
Hi guys,
I am still kinda new to Linux.
Script template I found on the net and adapted for our environment:
#!/bin/sh
#set -x
ADMIN="admin@mydomain.com"
ALERT=10
df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read output;
do
#echo $output
... (2 Replies)
Discussion started by: wbdevilliers
2 Replies
5. Shell Programming and Scripting
i have lunix 5.4
i make script to tack the export from database 11g by oracle user
the oracle sheel is /bin/bash
when run this script display this error
./daily_xport_prod: line 36:
the daily_xport_prod script
#! /bin/sh
#
ORACLE_HOME=/u01/appl/oracle/product/11.2.0/db_1
export... (8 Replies)
Discussion started by: m_salah
8 Replies
6. Shell Programming and Scripting
I have 2000 files named like "file-fr0000.log", "file-fr1999.log"...
I wanna generate the file names automatically in the following c shell script:
set fr = 0
while ($fr <= 1999)
grep "ENERGY" file-fr$fr.log > data.dat
@ fr = ( $fr + 1 )
end
The above will generate file names... (3 Replies)
Discussion started by: rockytodd
3 Replies
7. Shell Programming and Scripting
Hi, i am making a simple program with a optional -t as the 3rd parameter.
Submit course assignment -t dir
In the script, i wrote:
#!/bin/bash
echo "this is course: ${1}"
echo "this is assignment #: ${2}"
echo "late? : ${3}"
if then
echo "this is late"
fi
but this gives me a
:... (3 Replies)
Discussion started by: leonmerc
3 Replies
8. Shell Programming and Scripting
root@server01 # df -h | grep /tmp | awk {'print $3}'
252M
root@server01 #
root@server01 # cat /usr/local/tmpchk.sh
#!/bin/sh
x=`df -h | grep /tmp | awk {'print $3}'`
if ;
then
rm -fr /tmp/somefolder/
else
echo "its small" (2 Replies)
Discussion started by: fed.linuxgossip
2 Replies
9. UNIX for Dummies Questions & Answers
When i run the following code i get an error that says Integer expression expected!
How do i fix this?
#!/bin/bash
if ;then
echo "wrong"
exit 1
fi
if ;then
for i in /dev;do
if ;then
echo $i
ls -l
fi (4 Replies)
Discussion started by: kotsos13
4 Replies
10. Shell Programming and Scripting
I am trying to run following condition with both variables having numeric values "1,2,3"
if ;when i run it i get following error:
$NEW_STATE: integer expression expected
Please correct me where I'm doing wrong.
I'm trying to check either New State is greater or Old state.... (0 Replies)
Discussion started by: kashif.live
0 Replies
LEARN ABOUT OSX
tc-mirred
Mirror/redirect action in tc(8) Linux Mirror/redirect action in tc(8)
NAME
mirred - mirror/redirect action
SYNOPSIS
tc ... action mirred DIRECTION ACTION [ index INDEX ] dev DEVICENAME
DIRECTION := { ingress | egress }
ACTION := { mirror | redirect }
DESCRIPTION
The mirred action allows packet mirroring (copying) or redirecting (stealing) the packet it receives. Mirroring is what is sometimes
referred to as Switch Port Analyzer (SPAN) and is commonly used to analyze and/or debug flows.
OPTIONS
ingress
egress Specify the direction in which the packet shall appear on the destination interface.
mirror
redirect
Define whether the packet should be copied (mirror) or moved (redirect) to the destination interface.
index INDEX
Assign a unique ID to this action instead of letting the kernel choose one automatically. INDEX is a 32bit unsigned integer greater
than zero.
dev DEVICENAME
Specify the network interface to redirect or mirror to.
EXAMPLES
Limit ingress bandwidth on eth0 to 1mbit/s, redirect exceeding traffic to lo for debugging purposes:
# tc qdisc add dev eth0 handle ffff: ingress
# tc filter add dev eth0 parent ffff: u32
match u32 0 0
action police rate 1mbit burst 100k conform-exceed pipe
action mirred egress redirect dev lo
Mirror all incoming ICMP packets on eth0 to a dummy interface for examination with e.g. tcpdump:
# ip link add dummy0 type dummy
# ip link set dummy0 up
# tc qdisc add dev eth0 handle ffff: ingress
# tc filter add dev eth0 parent ffff: protocol ip
u32 match ip protocol 1 0xff
action mirred egress mirror dev dummy0
Using an ifb interface, it is possible to send ingress traffic through an instance of sfq:
# modprobe ifb
# ip link set ifb0 up
# tc qdisc add dev ifb0 root sfq
# tc qdisc add dev eth0 handle ffff: ingress
# tc filter add dev eth0 parent ffff: u32
match u32 0 0
action mirred egress redirect dev ifb0
SEE ALSO
tc(8), tc-u32(8)
iproute2 11 Jan 2015 Mirror/redirect action in tc(8)