You escaped one address delimiter too many. man sed:
Quote:
Addresses \cregexpc
Match lines matching the regular expression regexp. The c may be any character.
Try your sed command again, with the second | unescaped.
To avoid commenting out an already commented line, you can either add the # to all matching lines, and then remove duplicates, or extend the address, like
Using a similar address for the reverse operation, including 0 - n spaces in the s command, is left as an execise for the reader.
Hi all,
I have the following data in a file x.csv:
> ,this is some text here
> ,,,,,,,,,,,,,,,,2006/11/16,0.23
> ,,,,,,,,,,,,,,,,2006/12/16,0.88
< ,,,,,,,,,,,,,,,,this shouldnt be deleted
I need to use SED to match anything with a > in the line and delete that line, can someone help... (7 Replies)
What is the command to count lines in a files, but ignore blank lines and commented lines?
I have a file with 4 sections in it, and I want each section to be counted, not including the blank lines and comments... and then totalled at the end.
Here is an example of what I would like my... (6 Replies)
I have an ugly conf file that has the string I'm interested in searching for in the middle of a block of code that's relevant, and I'm trying to find a way to remove that entire block based on the matched line.
I've googled for this problem, and most people helping are only interested in... (9 Replies)
Hi all,
I have a text data file. My aim here is to find line called *FIELD* AV for every record and print lines after that till *FIELD* RF. But here I want first 3 to four lines for very record as well. FIELD AV is some where in between for very record. SO I am not sure how to retrieve lines in... (2 Replies)
Hi,
i need help to delete all the lines between 2 matched patterns and the first pattern must be deleted too. sample as follows:
inputfile.txt
>kump_1
...........................
...........................
>start_0124
dgfhghgfh
fgfdgfh
fdgfdh
>kump_2
............................. (7 Replies)
hello everyone,
im new here, and also programming with awk, sed and grep commands on linux.
In my text i have many lines with this config:
1 1 4 3 1 1 2 5
2 2 1 1 1 3 1 2
1 3 1 1 1 2 2 2
5 2 4 1
3 2 1 1 4 1 2 1
1 1 3 2 1 1 5 4
1 3 1 1... (3 Replies)
Hi,
I need to do find and replace, but the pattern is not full known.
for example,
my file has /proj/app-d1/sun or /data/site-d1/conf
here app-d1 and site-d1 is not constant. It may be different in different files. common part is /proj/xx/sun and /data/xxx/conf
i want to find where ever... (6 Replies)
Discussion started by: rbalaj16
6 Replies
LEARN ABOUT DEBIAN
regexp-assemble
REGEXP-ASSEMBLE(1p) User Contributed Perl Documentation REGEXP-ASSEMBLE(1p)NAME
regexp-assemble - Assemble a list of regular expressions from a file
SYNOPSIS
regexp-assemble -abcdfinprsStTuUvw file [...]
DESCRIPTION
Assemble a list of regular expression either from standard input or a file, using the Regexp::Assemble module.
OPTIONS -a look Ahead. Insert "(?=...)" zero-width lookahead assertions in the pattern, where necessary.
-b Blank. Ignore blank lines.
-c Comment. Basic comment filtering. Strip off perl/shell comments ("s*#.*$/").
-d Debug. Turns on debugging output. See Regexp::Assemble for suitable values.
-i Indent. Print the regular expression using and indent of n to display nesting. A.k.a pretty-printing. Implies -p.
-n No newline. Do not print a newline after the pattern. Useful when interpolating the output into a templating system or similar.
-p Print. Print the pattern. This is the default, however, it is required when the -t switch is enabled (because if you want to test
patterns ordinarily you don't care what the the assembled pattern looks like).
-r Reduce. The default behaviour is to reduce the assembled pattern. Enabling this switch causes the reduction algorithm to be switched
off. This can help you determine how much reduction is performed.
regexp-assemble pattern.file | wc
# versus
regexp-assemble -r pattern.file | wc
-s Statistics. Print some statistics about the assembled pattern. The output is sent to STDERR (in order to allow the generated pattern
to be redirected elsewhere).
-S Statistics only. Like -s, except that the pattern itself is not output. Useful with -d 8 to see the time taken.
-t Test. Test the assembled expression against the contents of a file. Each line is read from the file and is matched against the
pattern. Lines that fail to match are printed. In other words, no output is good output. In this mode of operation, error status is 1
in the case of a failure, 0 if all lines matched.
-T Time. Print statistics on the time taken to reduce and assemble the pattern. (This is merely a lazy person's synonym for "-d 8").
-u Unique. Carp if duplicate patterns are found.
-U Unroll. Transform "a+" et al into "aa*" (which may allow additional reductions).
-v Version. Print the version of the regexp-assemble script.
-w Word/Whole. When testing the contents of a file with "-t", bracket the expression with "^" and "$" in order to match the whole word or
line from the file.
DIAGNOSTICS
Will print out a summary of the problem if an added pattern causes the assembly to fail.
SEE ALSO
Regexp::Assemble
AUTHOR
Copyright (C) 2004-2008 David Landgren. All rights reserved.
LICENSE
This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-06-30 REGEXP-ASSEMBLE(1p)