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Shell Programming and Scripting
How to use sed to modify a line above or below matching pattern?
Post 302539213 by sprinner on Friday 15th of July 2011 05:08:15 PM
07-15-2011
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1. UNIX for Dummies Questions & Answers
Hi,
I am new to this forum and i would like to get help in this issue.
I have a file 1.txt as shown:
apple
banana
orange
apple
grapes
banana
orange
grapes
orange
....
Now i would like to search for pattern say apple or orange and then put a # at the beginning of the pattern... (2 Replies)
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2. UNIX for Dummies Questions & Answers
Hi,
I think you ppl did not get my question correctly, let me explain
I have 1.txt with following entries as shown:
0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
**
**
**
In file 2.txt I have the following entries as shown:
... (1 Reply)
Discussion started by: imas
1 Replies
3. Shell Programming and Scripting
Hi,
I have file 1.txt with following entries as shown:
0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433
**
**
**
In file 2.txt I have the following entries as shown:
0152364|134444|10.20.30.40|015236433
0233654|122555|10.20.30.50|023365433... (4 Replies)
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4. Shell Programming and Scripting
trying to use sed in finding a matching pattern in a file then deleting
the next line only .. pattern --> <ad-content>
I tried this but it results are not what I wish
sed '/<ad-content>/{N;d;}' akv.xml > akv5.xml
ex,
<Celebrant2First>Mickey</Celebrant2First>
<ad-content>
Minnie... (2 Replies)
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Hi guys,
got a problem here with sed on the command line.
If i have a string as below:
online xx:wer:xcv: sdf:/asdf/http:https-asdfd
How can i match the pattern "http:" and replace the start of the string to the pattern with null?
I tried the following but it doesn't work:
... (3 Replies)
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I want to delete all the blank lines from a file before a certain line number. e.g.
Input file (n: denotes line number)
1: a
2:
3: b
4: c
5:
6: d
I want to delete all blank lines before line number 3, such that my output is:
a
b
c
d
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Hi I just wanted to add a new line after every matching pattern:
The method doing this doesn't matter, however, I have been using sed and this is what I tried doing, knowing that I am a bit off:
sed 'Wf a\'/n'/g'
Basically, I want to add a new line after occurrence of Wf. After the line Wf... (5 Replies)
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Dear Unix Forums,
I am hoping you can help me with a pattern matching problem.
What am I trying to do?
I want to replace multiple lines of a text file (that match a multi-line pattern) with a single line of text. These patterns can span several lines and do not always have the same number of... (10 Replies)
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9. Shell Programming and Scripting
'Hi
I'm using the following code to extract the lines(and redirect them to a txt file) after the pattern match. But the output is inclusive of the line with pattern match.
Which option is to be used to exclude the line containing the pattern?
sed -n '/Conn.*User/,$p' > consumers.txt (11 Replies)
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Looking for help,
i have input file like below and want to modify to expected output, if can without create additional file, hope can direct modify it.
have 2 thing need do.
1st
is adding a word (testplan generation off) after ! ! IPG: Tue Aug 07 14:31:17 2018
2nd
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LEARN ABOUT DEBIAN
vlan-interfaces
VLAN-INTERFACES(5) File formats VLAN-INTERFACES(5) NAME
/etc/network/interfaces (vlan) - vlan extensions for the interfaces(5) file format DESCRIPTION
/etc/network/interfaces contains network interface configuration information for the ifup(8) and ifdown(8) commands. This manpage describes the vlan extensions to the standard interfaces(5) file format. Primary extensions exist to make and destroy vlan interfaces, secondary extensions exist for ipv4 interface manipulation which are gener- ally needed when using (a lot of) vlans. VLAN CREATION
Vlan interface definitions exist of the vlan interface name, and an optional 'raw-device' parameter. Vlan interfaces are numbered 1 to 4095. You have the option to have interface names zero-padded to 4 numbers, or just the plain digits without leading zero. The following example shows four ways to create a vlan with id 1 on interface eth0. They all result in different names. iface eth0.1 inet static address 192.168.1.1 netmask 255.255.255.0 iface vlan1 inet static vlan-raw-device eth0 address 192.168.1.1 netmask 255.255.255.0 iface eth0.0001 inet static address 192.168.1.1 netmask 255.255.255.0 iface vlan0001 inet static vlan-raw-device eth0 address 192.168.1.1 netmask 255.255.255.0 # We don't have br support out of the box iface br0.2 inet static vlan-raw-device br0 address 192.168.1.1 netmask 255.255.255.0 # Aliases are ignored iface br0.2:1 inet static address 192.168.1.1 netmask 255.255.255.255 EXTRA IFACE OPTIONS
Usually someone who uses vlans also wants to do some other manipulations with the ip stack or interface. vlan-raw-device devicename Indicates the device to create the vlan on. This is ignored when the devicename is part of the vlan interface name. ip-proxy-arp 0|1 Turn proxy-arp off or on for this specific interface. This also works on plain ethernet like devices. ip-rp-filter 0|1|2 Set the return path filter for this specific interface. This also works on plain ethernet like devices. hw-mac-address mac-address This sets the mac address of the interface before bringing it up. This works on any device that allows setting the hardware address with the ip command. AUTHOR
This manpage was adapted from interfaces(5) by Ard van Breemen <ard@kwaak.net> SEE ALSO
vconfig(8) interfaces(5) vlan September 30 2007 VLAN-INTERFACES(5)