I want to get a list of all the files in the current directory that have two patterns. I can do first grep of one pattern and then with the output do the grep of the second pattern.
if the output of 1st pattern search results in many files, it is very difficult to do a grep of the 2nd pattern for... (1 Reply)
Hi,
Can we grep multiple patterns in UNIX.
for example:
cat /x/y/oratab | grep -i "pattern1|pattern2" .... etc
I require the syntax for multiple patterns. | is not working as I explained in example.
Malay (4 Replies)
Hi All,
I have a file. I need to find multiple patterns in a row and need those rows to divert to new file.
I tried using grep -e / -E / -F options as given in man.
But its not working.
==> cat testgrep.txt
william,fernandes,xxxxx
mark,morsov,yyyy
yy=,xx=
yyyy=,xxxx==
==>... (7 Replies)
Hi
I have 3 patterns for example to be searched.
These three patterns are available in file1.
The patterns to be searched are in file2.
I want to search the pattern of file1 to file2.
Can any one help with example?
Regards
Dhana (1 Reply)
I need a simple script to get all lines between 2 Patterns,
e.g.
.............
.............
114456723: testing Script
Alpha
Beta
114459234: testing Done
.............
.............
It should give all the lines in between 114456723 and 114459234, including these as well.
Any... (2 Replies)
I have a file with many rows.
I want to grep for multiple patterns from the file.
For eg:
XX=123|YY=222|ZZ=566
AA=123|EE=222|GG=566
FF=123|RR=222|GG=566
DD=123|RR=222|GG=566
I want the lines which has both XX and ZZ.
I know I can get it like this.
grep XX file | grep YY
But... (10 Replies)
Hi All,
I've been trying solve this with a simple command but not having much luck. I have a file like this:
Line 1: random_description 123/alert/high random_description2 356/alert/slow
Line 2: random_description3 654/alert/medium
Line 3: random_description4 234/alert/critical
I'm... (7 Replies)
I have a file with the following text:
grep \$
grep \\$
grep \\\$
grep '\$'
grep '\'$'
grep \\
grep \\\\
grep "\$"
grep '"$'
grep "$"
When I perform these same commands on this file, the result are never what I would expect them to be. Could someone please comment on the results and... (3 Replies)
Hi Experts,
I have a log file like this.I need to filter the Index name and elapsed time(only created ).
06:36:39 SQL> create index XYZ_F75 on XYZ
06:36:39 2 ("GRP_ID", "_ID") parallel 64 nologging
06:36:39 3 tablespace XARGS_IDX
06:36:39 4 ;
Index created.
Elapsed:... (2 Replies)
I am trying to grep a variable with multiple lines with multiple patterns
below is the pattern list in a variable called "grouplst", each pattern is speerated by "|"
grouplst="example1|example2|example3|example4|example5|example6|example7"
I need to use the patterns above to grep a... (2 Replies)
Discussion started by: ajetangay
2 Replies
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pcre_dfa_exec
PCRE_DFA_EXEC(3) Library Functions Manual PCRE_DFA_EXEC(3)NAME
PCRE - Perl-compatible regular expressions
SYNOPSIS
#include <pcre.h>
int pcre_dfa_exec(const pcre *code, const pcre_extra *extra,
const char *subject, int length, int startoffset,
int options, int *ovector, int ovecsize,
int *workspace, int wscount);
DESCRIPTION
This function matches a compiled regular expression against a given subject string, using an alternative matching algorithm that scans the
subject string just once (not Perl-compatible). Note that the main, Perl-compatible, matching function is pcre_exec(). The arguments for
this function are:
code Points to the compiled pattern
extra Points to an associated pcre_extra structure,
or is NULL
subject Points to the subject string
length Length of the subject string, in bytes
startoffset Offset in bytes in the subject at which to
start matching
options Option bits
ovector Points to a vector of ints for result offsets
ovecsize Number of elements in the vector
workspace Points to a vector of ints used as working space
wscount Number of elements in the vector
The options are:
PCRE_ANCHORED Match only at the first position
PCRE_BSR_ANYCRLF R matches only CR, LF, or CRLF
PCRE_BSR_UNICODE R matches all Unicode line endings
PCRE_NEWLINE_ANY Recognize any Unicode newline sequence
PCRE_NEWLINE_ANYCRLF Recognize CR, LF, and CRLF as newline sequences
PCRE_NEWLINE_CR Set CR as the newline sequence
PCRE_NEWLINE_CRLF Set CRLF as the newline sequence
PCRE_NEWLINE_LF Set LF as the newline sequence
PCRE_NOTBOL Subject is not the beginning of a line
PCRE_NOTEOL Subject is not the end of a line
PCRE_NOTEMPTY An empty string is not a valid match
PCRE_NO_START_OPTIMIZE Do not do "start-match" optimizations
PCRE_NO_UTF8_CHECK Do not check the subject for UTF-8
validity (only relevant if PCRE_UTF8
was set at compile time)
PCRE_PARTIAL Return PCRE_ERROR_PARTIAL for a partial match
PCRE_DFA_SHORTEST Return only the shortest match
PCRE_DFA_RESTART This is a restart after a partial match
There are restrictions on what may appear in a pattern when using this matching function. Details are given in the pcrematching documenta-
tion.
A pcre_extra structure contains the following fields:
flags Bits indicating which fields are set
study_data Opaque data from pcre_study()
match_limit Limit on internal resource use
match_limit_recursion Limit on internal recursion depth
callout_data Opaque data passed back to callouts
tables Points to character tables or is NULL
The flag bits are PCRE_EXTRA_STUDY_DATA, PCRE_EXTRA_MATCH_LIMIT, PCRE_EXTRA_MATCH_LIMIT_RECURSION, PCRE_EXTRA_CALLOUT_DATA, and
PCRE_EXTRA_TABLES. For this matching function, the match_limit and match_limit_recursion fields are not used, and must not be set.
There is a complete description of the PCRE native API in the pcreapi page and a description of the POSIX API in the pcreposix page.
PCRE_DFA_EXEC(3)