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Shell Programming and Scripting
comment/delete a particular pattern starting from second line of the matching pattern
Post 302246053 by Franklin52 on Sunday 12th of October 2008 01:53:35 PM
10-12-2008
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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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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)
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trying to use sed in finding a matching pattern in a file then deleting
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I have a file that will sometimes contain a pattern. The pattern is this:
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I have a file that will sometimes contain a pattern. The pattern is this:
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i have a file sample.txt containing
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Hi, just tried some script, awk, sed for the last 2 hours and now need help.
Let's say I have a huge file of 800,000 lines like this :
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'Hi
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Hi all!
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I have a file with a list of references towards the end and want to apply a grep for some string.
text ....
@unnumbered References
@sp 1
@paragraphindent 0
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LEARN ABOUT DEBIAN
lessecho
LESSECHO(1) General Commands Manual LESSECHO(1) NAME
lessecho - expand metacharacters SYNOPSIS
lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ... DESCRIPTION
lessecho is a program that simply echos its arguments on standard output. But any metacharacter in the output is preceded by an "escape" character, which by default is a backslash. OPTIONS
A summary of options is included below. -ex Specifies "x", rather than backslash, to be the escape char for metachars. If x is "-", no escape char is used and arguments con- taining metachars are surrounded by quotes instead. -ox Specifies "x", rather than double-quote, to be the open quote character, which is used if the -e- option is specified. -cx Specifies "x" to be the close quote character. -pn Specifies "n" to be the open quote character, as an integer. -dn Specifies "n" to be the close quote character, as an integer. -mx Specifies "x" to be a metachar. By default, no characters are considered metachars. -nn Specifies "n" to be a metachar, as an integer. -fn Specifies "n" to be the escape char for metachars, as an integer. -a Specifies that all arguments are to be quoted. The default is that only arguments containing metacharacters are quoted SEE ALSO
less(1) AUTHOR
This manual page was written by Thomas Schoepf <schoepf@debian.org>, for the Debian GNU/Linux system (but may be used by others). Send bug reports or comments to bug-less@gnu.org. Version 487: 25 Oct 2016 LESSECHO(1)