Hi,
I am having problems using grep to extract only 3,4 or 5 digit numbers from a text file, using:
grep '\<\{3,5\}\>' test.txt
or
grep '\{3,5\}' test.txt
or
egrep '{3,5}' test.txt
I would appreciate any help that anyone can give me
thanks (1 Reply)
Hi all,
For a intro UNIX course I'm taking, I need to use the command "tr" to display a file on standard output without any newlines (all on one line).
I assume I would start with "cat filename | tr" but don't know what to put after tr.
Any ideas would be lovely!
Thanks. (3 Replies)
Hi Folks,
I am new to ksh, i have informatica parameter file that i need to update everyday with shell script. i need your help updating this file with new parameters.
sample data
$$TABLE1_DATE=04-27-2011
$$TABLE2_DATE=04-23-2011
$$TABLE3_DATE=03-19-2011
.......Highligned... (4 Replies)
I would like to print string between two sequent digits and concatenate it into one single line.
input.txt
99 cord, rope, strand, twine,
twist, 100 strand, twine, twist,
cord, rope 101 strand, twine,
twist, twine, twist, cord, rope
105 cord, rope ,twi ... (8 Replies)
Hello all! I've looked all over the internet and this site and have come up a loss with an easy way to make a bash script to do what I want to do. I have a file with a naming convention as follows:
2012-01-18 string of words here 123.jpg
2012-01-18 string of words here 1234.jpg
2012-01-18... (2 Replies)
Hi all, I'm quite newbie in shell scripting but I found a problem what I cant solve.
I have a .txt file which looks like this:
/22/
/23/
/24/
and so on and I'd need to make it look like this:
/22/|/23/|/24/|...and so on.
these numbers are growing and has lines like this /2a/ as well.... (15 Replies)
I'm trying to grep lines where the digits at the end of each line are greater than digits. Tried this but it will only allow me to specify 2 digits. Any ideas would greatly be appreciated. grep -i '\<\{3,4,5\}\>' file
---------- Post updated at 05:58 PM ---------- Previous update was at 05:41... (1 Reply)
Hello,
This is similar to a previous post, where I was trying to eliminate lines where column #1 is duplicated. If it is a duplicate, the line with the greater value in column #2 should be deleted. In this new case, I need to test duplication with the first three digits in column #1 (ignoring the... (6 Replies)
Discussion started by: palex
6 Replies
LEARN ABOUT REDHAT
tc-cgroup
Cgroup classifier in tc(8) Linux Cgroup classifier in tc(8)NAME
cgroup - control group based traffic control filter
SYNOPSIS
tc filter ... cgroup [ match EMATCH_TREE ] [ action ACTION_SPEC ]
DESCRIPTION
This filter serves as a hint to tc that the assigned class ID of the net_cls control group the process the packet originates from belongs
to should be used for classification. Obviously, it is useful for locally generated packets only.
OPTIONS
action ACTION_SPEC
Apply an action from the generic actions framework on matching packets.
match EMATCH_TREE
Match packets using the extended match infrastructure. See tc-ematch(8) for a detailed description of the allowed syntax in
EMATCH_TREE.
EXAMPLES
In order to use this filter, a net_cls control group has to be created first and class as well as process ID(s) assigned to it. The follow-
ing creates a net_cls cgroup named "foobar":
modprobe cls_cgroup
mkdir /sys/fs/cgroup/net_cls
mount -t cgroup -onet_cls net_cls /sys/fs/cgroup/net_cls
mkdir /sys/fs/cgroup/net_cls/foobar
To assign a class ID to the created cgroup, a file named net_cls.classid has to be created which contains the class ID to be assigned as a
hexadecimal, 64bit wide number. The upper 32bits are reserved for the major handle, the remaining hold the minor. So a class ID of e.g.
ff:be has to be written like so: 0xff00be (leading zeroes may be omitted). To continue the above example, the following assigns class ID
1:2 to foobar cgroup:
echo 0x10002 > /sys/fs/cgroup/net_cls/foobar/net_cls.classid
Finally some PIDs can be assigned to the given cgroup:
echo 1234 > /sys/fs/cgroup/net_cls/foobar/tasks
echo 5678 > /sys/fs/cgroup/net_cls/foobar/tasks
Now by simply attaching a cgroup filter to a qdisc makes packets from PIDs 1234 and 5678 be pushed into class 1:2.
SEE ALSO tc(8), tc-ematch(8),
the file Documentation/cgroups/net_cls.txt of the Linux kernel tree
iproute2 21 Oct 2015 Cgroup classifier in tc(8)