Originally posted by Lomic if I understand what you mean, I should do like this:
Am I right? (if it is the case, it si ok because my pattern never change)
Looking at that, all you really need to do is
i.e. it's only the slashes that need to be escaped.
Hi guys,
does anyone know how to test for a regular expression - i want to include it in a script to make sure the variable is a regexp
cheers (1 Reply)
What is the easiest way to get full address of *.jpg images from html file using perl?
example:
http://farm3.static.flickr.com/2397/2126443111_65a810004c.jpg (1 Reply)
I'd like to know if there is a catchall line for renaming the following patterns:
s01e03 -> 01x03
s4e9 -> 04x09
s10e08 ->10x08
and possibly even:
318 -> 03x18
1002 ->10x02
if its the first 3 or first digit number in the string.
thanks! (0 Replies)
Good Day,
Im new to scripting especially awk and sed. I just would like to ask help from you guys about a sed command that prints the line immediately after a regexp, but not the line containing the regexp.
sed -n '/regexp/{n;p;}' filename
What if my regexp is 3 word or a sentence. Im... (3 Replies)
I don't want to have to resort to
/()/
though that does work.
Effectively, I need to be able to implement
/(?:(?:regexp1){0})(regexp2)\D/
to basically match regexp2 as long as it is present and regexp1 is NOT.
So, how to do
/(regexp){0}/
? (2 Replies)
Hi everyone, I would really appreciate any help I could get on the following topic.
I am not very familiar with reg expressions nor with sed, I just know the basic uses. What I am trying to do is the following: I have a huge text file where I would like to replace all occurnces of a certain... (13 Replies)
I would like to extract "1333 Fairlane" given the below text.
The word "Building:" is always present. The wording between Building and the beginning of the address can be almost anything. It appears the the hyphen is there most of the time.
Campus: Fairlane Business Park
Building:... (9 Replies)
Hello,
This is a problem I've worked on a while and can't figure out.
There is a file.txt
..some stuff..
]
]
..some stuff..
The Awk program is trying to extract the year portion of the birth and death ("98: and "2nd C.") using the below technique
#!/bin/awk
@include... (5 Replies)
GREP(1) General Commands Manual GREP(1)NAME
grep, g - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
g [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines that match the pattern, a regular expression as defined in regexp(7) with
the addition of a newline character as an alternative (substitute for |) with lowest precedence. Normally, each line matching the pattern
is `selected', and each selected line is copied to the standard output. The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-e The following argument is taken as a pattern. This option makes it easy to specify patterns that might confuse argument parsing,
such as -n.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
-f The pattern argument is the name of a file containing regular expressions one per line.
-b Don't buffer the output: write each output line as soon as it is discovered.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'. An expression starting with '*' will treat the rest of the expression as literal characters.
G invokes grep with -n and forces tagging of output lines by file name. If no files are listed, it searches all files matching
*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms
SOURCE
/src/cmd/grep
/bin/g
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(7)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)