I'm not sure that this solution is possible otherwise the solution will also be possible with grep...
This actually does not work in my case...
Thank you all for the suggestions. I need to play a bit around with them.
General question; Is it possible to merge multiple regex into one?
E.g. for this case.
We have a this hash and want to make a regex ohny for this pattern 2A:DD:4B:C5:AD:B0:MF:96:51:B0:14:4A:B5:6C:99:FB
So I am increasing the patterns, and merging one into an other:
1. pattern: ([A-Z0-1][A-Z0-1]:) set pattern
2. pattern: ([[A-Z0-1][A-Z0-1]:]*) pattern 1 0-infinite times
3. pattern: ([[A-Z0-1][A-Z0-1]:]*[A-Z0-1][A-Z0-1]) and put the last two chars at the end
Is this possible?
---------- Post updated at 07:19 PM ---------- Previous update was at 06:05 PM ----------
Quote:
Originally Posted by RavinderSingh13
Thanks this works good in my case. But I would like to pattern the hash itself. How would you do that?
I am trying to use sed to delete multiple lines in a file. The problem is that I need to search for a certain line and then once found delete it plus the next 4 lines. For instance if I had a file that consisted of the following lines:
#Data1.start
(
(Database= data1)
(Name = IPC)... (1 Reply)
Hi all,
I am trying to figure out the syntx to delete multiple lines w/ sed. I know the following syntax will delete lines 1 THROUGH 5 from filex:
sed 1,5d filex
But I wan to delete lines 1 AND 5 (keeping lines 2,3, and 4). Does anyone know how to do this in a single sed statement?
... (2 Replies)
Hi all:
I have a file in which the contents are as following:
...
This is a test
ONE
TWO
Hello, world!
XXX YYY CCC
test again
three, four
five
six
seven
world
AAA BBB QQQ
test
eight, nine
world (3 Replies)
Got another sed question :)
My text block is
I need to do the following:
If (and only if) the line starting with 10002,11 is followed by a line starting with 10004,9 , insert the line 10003,9 between the 2
Thus, my output should be
I tried
but this gives me
(the order... (3 Replies)
I have a file names 'log.txt' that looks something like this:
#This is a comment
/sbin/iptables -A INPUT -p tcp -s ip.of.a machine --destination-port 21 -j ACCEPT
#This is the comment to read#
/sbin/iptables -A INPUT -p tcp -s ip.of.a.machine --destination-port 21 -j ACCEPT
I would like... (1 Reply)
Before I ask my actual question, is it going to be a problem that I want to run this process on a 15 Gig file that is ~140 million rows?
What I'm trying to do:
I have a file that looks like
Color,Type,Count,Day
Yellow,Full
5
Tuesday
Green,Half
6
Wednesday
Purple,Half
8
Tuesday
...... (3 Replies)
Hi guys,
anyone know how can i join multiples lines using sed till the end of a file and output to another file in a single line?
The end of each line will be replaced with a special char "#".
I am using the below SED command, however it seems to remove the last 2 lines. Also not all lines... (12 Replies)
:confused:Hi,
I'm relativley new at unix so am having difficulties at the most basic of areas. I am trying using sed to make multiple lines into one line.
For example, i would like:
Mary
had
a
little
lamb
to look like this
Maryhadalittlelamb
so far i have tried
sed... (1 Reply)
Hi All,
I have a input file as sample below
<this is not starting of file>
record
line1
line2
line3
end
line4
line5
record
line6
line7
line8
my requirement is this, i want to select a pattern between first record and end, whatever is written between first record and end.
and... (0 Replies)
I have a text file and i want to run 3 sed commands for the lines entered by the user using perl script. I am doing this manually till now.
need some help with this
The sed commands I have to use are :
sed -i "s/{+//" error.txt
sed -i "s/+}//" error.txt
sed -i "s/\//g" error.txt... (5 Replies)
Discussion started by: utkarshkhanna44
5 Replies
LEARN ABOUT POSIX
regex
regex(1F) FMLI Commands regex(1F)NAME
regex - match patterns against a string
SYNOPSIS
regex [-e] [ -v "string"] [ pattern template] ... pattern [template]
DESCRIPTION
The regex command takes a string from the standard input, and a list of pattern / template pairs, and runs regex() to compare the string
against each pattern until there is a match. When a match occurs, regex writes the corresponding template to the standard output and
returns TRUE. The last (or only) pattern does not need a template. If that is the pattern that matches the string, the function simply
returns TRUE. If no match is found, regex returns FALSE.
The argument pattern is a regular expression of the form described in regex(). In most cases, pattern should be enclosed in single quotes
to turn off special meanings of characters. Note that only the final pattern in the list may lack a template.
The argument template may contain the strings $m0 through $m9, which will be expanded to the part of pattern enclosed in ( ... )$0 through
( ... )$9 constructs (see examples below). Note that if you use this feature, you must be sure to enclose template in single quotes so
that FMLI does not expand $m0 through $m9 at parse time. This feature gives regex much of the power of cut(1), paste(1), and grep(1), and
some of the capabilities of sed(1). If there is no template, the default is $m0$m1$m2$m3$m4$m5$m6$m7$m8$m9.
OPTIONS
The following options are supported:
-e Evaluates the corresponding template and writes the result to the standard output.
-v "string" Uses string instead of the standard input to match against patterns.
EXAMPLES
Example 1: Cutting letters out of a string
To cut the 4th through 8th letters out of a string (this example will output strin and return TRUE):
`regex -v "my string is nice" '^.{3}(.{5})$0' '$m0'`
Example 2: Validating input in a form
In a form, to validate input to field 5 as an integer:
valid=`regex -v "$F5" '^[0-9]+$'`
Example 3: Translating an environment variable in a form
In a form, to translate an environment variable which contains one of the numbers 1, 2, 3, 4, 5 to the letters a, b, c, d, e:
value=`regex -v "$VAR1" 1 a 2 b 3 c 4 d 5 e '.*' 'Error'`
Note the use of the pattern '.*' to mean "anything else".
Example 4: Using backquoted expressions
In the example below, all three lines constitute a single backquoted expression. This expression, by itself, could be put in a menu defini-
tion file. Since backquoted expressions are expanded as they are parsed, and output from a backquoted expression (the cat command, in this
example) becomes part of the definition file being parsed, this expression would read /etc/passwd and make a dynamic menu of all the login
ids on the system.
`cat /etc/passwd | regex '^([^:]*)$0.*$' '
name=$m0
action=`message "$m0 is a user"`'`
DIAGNOSTICS
If none of the patterns match, regex returns FALSE, otherwise TRUE.
NOTES
Patterns and templates must often be enclosed in single quotes to turn off the special meanings of characters. Especially if you use the
$m0 through $m9 variables in the template, since FMLI will expand the variables (usually to "") before regex even sees them.
Single characters in character classes (inside []) must be listed before character ranges, otherwise they will not be recognized. For exam-
ple, [a-zA-Z_/] will not find underscores (_) or slashes (/), but [_/a-zA-Z] will.
The regular expressions accepted by regcmp differ slightly from other utilities (that is, sed, grep, awk, ed, and so forth).
regex with the -e option forces subsequent commands to be ignored. In other words, if a backquoted statement appears as follows:
`regex -e ...; command1; command2`
command1 and command2 would never be executed. However, dividing the expression into two:
`regex -e ...``command1; command2`
would yield the desired result.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO awk(1), cut(1), grep(1), paste(1), sed(1), regcmp(3C), attributes(5)SunOS 5.10 12 Jul 1999 regex(1F)