Hi guys,
does anyone know how to test for a regular expression - i want to include it in a script to make sure the variable is a regexp
cheers (1 Reply)
Hello,
I have the output of ls -l stored in a text file called "files.txt".
-rwx------ 1 user1 dev 130 Sep 21 16:14 sc1.sh
-rwxr----- 1 user1 dev 10328 Sep 29 20:11 sc10.sh
-rwxr----- 1 user1 dev 9984 Sep 30 15:33 sc11.sh
-rwxr----- 1 user1 dev ... (2 Replies)
Good Day,
Im new to scripting especially awk and sed. I just would like to ask help from you guys about a sed command that prints the line immediately after a regexp, but not the line containing the regexp.
sed -n '/regexp/{n;p;}' filename
What if my regexp is 3 word or a sentence. Im... (3 Replies)
My input file looks like this:
13154|X,the deer hunter
13154|Y,the good life
1316|,american idol
1316|,bowling
1316|,chuck
etc...
The X, Y, or any other character (besides a comma) after the pipe is a "Device Type". I want to strip out lines that do not have a device type.
I have... (2 Replies)
Consider the following code:
grep -o -e '^STEAM_::\d+$' workfile3.tmp
A sample format of a valid string for the regexp would be:
STEAM_0:1:12345678
Here is an example line from the workfile3.tmp file:
465:L 01/02/2012 - 00:05:33: "Spartan1-1-7<8><STEAM_0:1:47539638><>" connected
No... (2 Replies)
I have test string value , something like the one below
str='KUAMRJIT|GHOSH'
If I type
echo $str | grep -o -e '\|+'
it doesnt give me anything .
But on the contrary
echo $str | grep -o -e '|'
display the only one pipe character(|) thats there in the string above .
The way I understood Unix... (8 Replies)
Hi all,
I am trying to filter out those lines that contain a "non-alpha" character.
An example of my input is the following:
zygnematales grb
zygocactus grb
zygocactus_truncatus plt
zygodactyl_foot prt
zygoma prt
zygomatic prt
zygomatic_arch prt
zygomatic_bone ... (2 Replies)
I would like to extract "1333 Fairlane" given the below text.
The word "Building:" is always present. The wording between Building and the beginning of the address can be almost anything. It appears the the hyphen is there most of the time.
Campus: Fairlane Business Park
Building:... (9 Replies)
Match-all classifier in tc(8) Linux Match-all classifier in tc(8)NAME
matchall - traffic control filter that matches every packet
SYNOPSIS
tc filter ... matchall [ skip_sw | skip_hw ] [ action ACTION_SPEC ] [ classid CLASSID ]
DESCRIPTION
The matchall filter allows to classify every packet that flows on the port and run a action on it.
OPTIONS
action ACTION_SPEC
Apply an action from the generic actions framework on matching packets.
classid CLASSID
Push matching packets into the class identified by CLASSID.
skip_sw
Do not process filter by software. If hardware has no offload support for this filter, or TC offload is not enabled for the inter-
face, operation will fail.
skip_hw
Do not process filter by hardware.
EXAMPLES
To create ingress mirroring from port eth1 to port eth2:
tc qdisc add dev eth1 handle ffff: ingress
tc filter add dev eth1 parent ffff:
matchall skip_sw
action mirred egress mirror
dev eth2
The first command creats an ingress qdisc with handle ffff: on device eth1 where the second command attaches a matchall filters on it that
mirrors the packets to device eth2.
To create egress mirroring from port eth1 to port eth2:
tc qdisc add dev eth1 handle 1: root prio
tc filter add dev eth1 parent 1:
matchall skip_sw
action mirred egress mirror
dev eth2
The first command creats an egress qdisc with handle 1: that replaces the root qdisc on device eth1 where the second command attaches a
matchall filters on it that mirrors the packets to device eth2.
To sample one of every 100 packets flowing into interface eth0 to psample group 12:
tc qdisc add dev eth0 handle ffff: ingress
tc filter add dev eth0 parent ffff: matchall
action sample rate 100 group 12
SEE ALSO tc(8),
iproute2 21 Oct 2015 Match-all classifier in tc(8)