Hi,
I have reached at a specified offset from the start of file. My requirement is that I want to read only those lines, which have the string READ / ALTER / UPDATE. As soon as, none of these literals are found in the subsequent line, I want to stop reading. Is there any feature of grep which... (1 Reply)
Dear All
I have a file like this
112534554
446538656
444695656
225696966
226569744
228787874
113536566
443533535
222564552
115464656
225445345
225533234
I want to cut the file into different parts where the first two columns are '11' . The first two columns will be either... (3 Replies)
Hi,
I need to match lines after a pattern, upto the first blank line.
Searched in web and some forums but coulnt find the answer.
where <restart_step> =
10 -- Execute query
20 -- Write the contents to the Oracle table
30 -- Writing Contents to OUTPUT... (7 Replies)
Hi,
I have got the below requirement. please suggest.
I have a file like,
Processing Item is:
/data/ing/cfg2/abc.txt
/data/ing/cfg3/bgc.txt
Processing Item is:
/data/cmd/for2/ght.txt
/data/kernal/config.klgt.txt
I want to process the above file to get the output file like,
... (5 Replies)
Hi All,
From the below line if we want to display all the text till found pattern dot/. I was trying with the below code but couldn't able
to print text before the pattern. it display texts which is found after pattern.
awk '/assed/{print;getline;print}' file_name | sed 's/^*. *//'
input... (4 Replies)
Data:
Pattern Data Data Data
Data Data Data
Data Data Data
...
With awk, how do I print the pattern matching line, then the subsequent lines following the pattern matching line. Varying number of lines following the pattern matching line. (9 Replies)
Hi,
I have a simple problem but i guess stupid enough to figure it out. i have thousands rows of data. and i need to find match patterns of two columns and print the number of rows. for example:
inputfile
abd abp 123
abc abc 325
ndc ndc 451
mjk lkj... (3 Replies)
I need help with extract/print lines till stop pattern. This needs to happen after every 3rd occurrence of start pattern and continue till end of file. Consider below is an example of the log file. my start pattern will be every 3rd occurrence of ERROR_FILE_NOT_FOUND and stop pattern will be... (5 Replies)
Hello Experts , require help . See below output:
File inputs
------------------------------------------
Server Host = mike
id rl images allocated last updated density
vimages expiration last read <------- STATUS ------->... (4 Replies)
I am trying to combine lines with these conditions:
1. First line starts with text of "libname VALUE db2 datasrc" where VALUE can be any text.
2. If condition1 is met then continue to combine lines through a line that ends with a semicolon.
3. Ignore case when matching patterns and remove any... (5 Replies)
Discussion started by: Wes Kem
5 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)