If preserving the original line numbers is not important, then this script could be simplified.
However, it will still store the hash in memory until the entire file is read, so it probably is not as efficient as Scrutinizer's approach.
This User Gave Thanks to durden_tyler For This Post:
grep for a particular pattern and remove 5 lines above the pattern and 6 lines below the pattern
root@server1 # cat filename
Shell Programming and Scripting test1
Shell Programminsada asda
dasd asd Shell Programming and Scripting Post New Thread
Shell Programming and S sadsa ... (17 Replies)
hi,,
i hav a file with many lines.i need to remove all lines before a line begginning with a specific pattern from the file because these lines are not required.
Can u help me out with either a perl script or shell script
example:-
if file initially contains lines:
a
b
c
d
.1.2
d
e
f... (2 Replies)
I need to remove all lines which does not match the pattern from a text file (batch of text files). I also need to keep the header line which is the first line of the file. Please can you provide an example for that.
I used this to solve half of my work. I was unable to keep the first line of... (3 Replies)
Hi,
I have requirement that I need to split my input file into two files based on a search pattern "abc"
For eg. my input file has below content
abc
defgh
zyx
I need file 1 with
abc
and file2 with
defgh
zyx
I can use grep command to acheive this. But with grep I need... (8 Replies)
Hi ,
I want to remove the specific pattern and remove those lines from file using shell script.
i want to remove these lines
<?xml version='1.0' encoding='UTF-8'?>
<row_set>
</row_set>
my input file has content like this.
file name: sample.xml
<?xml version='1.0'... (4 Replies)
Not sure how I can accomplish this. I would like to remove all interfaces that have the commands I would like to see: switchport port-security, spanning-tree portfast. One line is no problem.
interface FastEthernet0/8
spanning-tree portfast
interface FastEthernet0/9
spanning-tree... (4 Replies)
Sorry for the weird title but i have the following problem.
We have several files which have between 10000 and about 500000 lines in them. From these files we want to remove lines which contain a pattern which is located in another file (around 20000 lines, all EAN codes). We also want to get... (28 Replies)
Team,
I am trying to use sed to delete 15 lines, after pattern patch, which includes the pattern as well in Solaris. I used the below command, as we do it Linux, but it's not working as expected in Solaris.
I am getting the error as "garbled".sed '/\/table/,+15d' status.html
sed: command... (8 Replies)
In the awk below I am trying to remove all lines above and including the pattern Test or Test2. Each block is seperated by a newline and Test2 also appears in the lines to keep but it will always have additional text after it. The Test to remove will not. The awk executed until the || was added... (2 Replies)
In the awk piped to sed below I am trying to format file by removing the odd xxxx_digits and whitespace after, then move the even xxxx_digit to the line above it and add a space between them. There may be multiple lines in file but they are in the same format. The Filename_ID line is the last line... (4 Replies)