...Whenever I use lookbehinds I get no results at all. ex:
...I am still not sure why the lookbehinds didn't work. Please let me know if you have any insight into what I'm doing wrong ...
I have GNU grep and it doesn't work on it.
Most likely grep's "-E" option does not support lookarounds. The man page or the GNU page at: GNU Grep 2.21
do not mention anything about lookarounds.
The "-E" option for "Extended REs" provides the special meaning to metacharacters like "+", "|", "{" etc. unlike BREs.
If you have GNU grep, you could try the experimental "-P" option which provides support for Perl-compatible regular expressions:
Hi,
Please let me know how to find text and print text and its previous line. Please don't get irritated few days back I asked text and next line. I am using HP-UX 11.11
Thanks for your help. (6 Replies)
Hi Guys I have a question about filling up an array
I have a file called USER_FILE.txt
it contains the following:
Real Name:Thomas A Username:THOMAS_A
Real Name:Thomas B Username:THOMAS_B
Real Name:Thomas C Username:THOMAS_C
Real Name:Thomas D Username:THOMAS_D
Real Name:Thomas E... (8 Replies)
Hi All,
The file has the following.
=========start of file===
This is a file containing employee info
START
name john
id 123
date 12/1/09
END
START
name sam
id 4234
date 12/1/08 resigned
END (9 Replies)
I would like to know why this command does not work.
I have a script which connects to and ftp site.
After getting the remote files localy i need move each remote file to a archive folder on the FTP site
*Please also note that some of the files have spaces in the file name.
Im trying to... (3 Replies)
I need to search a string for some specific text which is no big deal using grep. My problem is when the search fails to find the text. I need to add text like "na" when my search does not match.
I have tried this command but it does not work when I put the command in a loop in a bash script:
... (12 Replies)
I hope this makes sense and is possible.
I am trying to match $1 of panel_genes.txt with $3 of RefSeqGene.txt and when a match is found the value in $6 of RefSeqGene.txt
Example: ACTA2 is $1 of panel_genes.txt
ACTA2 NM_001613.2
ACTA2 NM_001141945.1
awk 'FNR==NR {... (4 Replies)
The below bash connects to a site, downloads a file, searches that file based of user input - could be multiple (all that seems to work). What I am not able to figure out is how to display on the screen match found or no match found" and write a file to a directory (C:\Users\cmccabe\Desktop\wget)... (4 Replies)
In the awk below I am trying to match the value in $4 of file1 with the split value from $4 in file2. I store the value of $4 in file1 in A and the split value (using the _ for the split) in array. I then strore the value in $2 as min, the value in $3 as max, and the value in $1 as chr.
If A is... (6 Replies)
Hello,
I have standard loop
while read -r info; do
command $info
done < info
in info text file I have multiple commands each on line that I want to execute. When I used them in console they worked, but not with this loop.
This is one of the commands in info file:
grep... (4 Replies)
hi all,
trying this using shell/bash with sed/awk/grep
I have two files, one containing one column, the other containing multiple columns (comma delimited).
file1.txt
abc12345
def12345
ghi54321
...
file2.txt
abc1,text1,texta
abc,text2,textb
def123,text3,textc
gh,text4,textd... (6 Replies)
Discussion started by: shogun1970
6 Replies
LEARN ABOUT PHP
mb_regex_set_options
MB_REGEX_SET_OPTIONS(3) 1 MB_REGEX_SET_OPTIONS(3)mb_regex_set_options - Set/Get the default options for mbregex functions
SYNOPSIS
string mb_regex_set_options ([string $options = mb_regex_set_options()])
DESCRIPTION
Sets the default options described by $options for multibyte regex functions.
PARAMETERS
o $options
- The options to set. This is a string where each character is an option. To set a mode, the mode character must be the last one
set, however there can only be set one mode but multiple options.
Regex options
+-------+-------------------------------+---+---+
|Option | | | |
| | | | |
| | Meaning | | |
| | | | |
+-------+-------------------------------+---+---+
| i | | | |
| | | | |
| | Ambiguity match on | | |
| | | | |
| x | | | |
| | | | |
| | Enables extended pattern form | | |
| | | | |
| m | | | |
| | | | |
| | | | |
| | '.' matches with newlines | | |
| | | | |
| s | | | |
| | | | |
| | | | |
| | '^' -> 'A', '$' -> '' | | |
| | | | |
| p | | | |
| | | | |
| | Same as both the m and s | | |
| | options | | |
| | | | |
| l | | | |
| | | | |
| | Finds longest matches | | |
| | | | |
| n | | | |
| | | | |
| | Ignores empty matches | | |
| | | | |
| e | | | |
| | | | |
| | eval(3) resulting code | | |
| | | | |
+-------+-------------------------------+---+---+
Regex syntax modes
+-----+----------------------------+---+---+
|Mode | | | |
| | | | |
| | Meaning | | |
| | | | |
+-----+----------------------------+---+---+
| j | | | |
| | | | |
| | Java (Sun java.util.regex) | | |
| | | | |
| u | | | |
| | | | |
| | GNU regex | | |
| | | | |
| g | | | |
| | | | |
| | grep | | |
| | | | |
| c | | | |
| | | | |
| | Emacs | | |
| | | | |
| r | | | |
| | | | |
| | Ruby | | |
| | | | |
| z | | | |
| | | | |
| | Perl | | |
| | | | |
| b | | | |
| | | | |
| | POSIX Basic regex | | |
| | | | |
| d | | | |
| | | | |
| | POSIX Extended regex | | |
| | | | |
+-----+----------------------------+---+---+
RETURN VALUES
The previous options. If $options is omitted, it returns the string that describes the current options.
SEE ALSO mb_split(3), mb_ereg(3), mb_eregi(3).
PHP Documentation Group MB_REGEX_SET_OPTIONS(3)