If you want a substring exact match that doesn't really rely on regexp syntax look at string match instead, but ymmv. I'm having trouble obtaining a sane result.You can always brute force the search..something like.
Hi,
I have field in a file which would come with any special character, how do i check that field?
Eg: @123TYtaasa>>>/ 131dfetr_~2
In the above example, how do I add pattern for any special character on the keyboard.
Thanks (3 Replies)
Hello,
I cannot see what's wrong in my code.
When I run code below, it just print an empty string.
my $test = "SWER~~ERTGSDFGTHAS_RTAWGA_DFAS.x4-234253454.in";
if ($test = ~ m/\~{1,2}.*4/) {
print "$1\n";
}
else {
print "No match...\n";
}
Anyone know what I'm doing wrong?
... (4 Replies)
Hi,
maybe it is stupid question, but is it possible to match expression like this ? :
... // ... ( there is "//" somewhere on the line and on the end of the line there ISN'T "*/" )
I've tried something like : (in SED)
sed 's/\/\/'
but I need "*/" not to be on the end of the line ...... (2 Replies)
Hello everyone,
I'm new in tcl scripting.
I'm currently studying a tcl script and came across this line:
regexp {(\d+)(\S?)} $opts match opt swi
According to my understanding, this line means to search in the opts variable for one or more digit, followed by a non-whitespace character... (2 Replies)
I need some help with regexp in tcl. The following code does work if the $urlvar ends in jpg,jpeg,png or gif. Eg, protocol(http/https)://testsite.com/images/image1.jpg
if { ! } {
//Do something
}
My problem is that if the URL does not end in these extensions this regexp is of no... (1 Reply)
I need to change R3.1.5 as 03015
similarly R4.1.7 as 04017
i need a single command
in tcl pls help
---------- Post updated at 05:19 PM ---------- Previous update was at 04:48 PM ----------
i had to do like this without using regexp
set old_release "R3.1.5"
... (1 Reply)
Hi.
I have 2 files of below format.
File1
AA~1~STEVE~3.1~4.1~5.1
AA~2~DANIEL~3.2~4.2~5.2
BB~3~STEVE~3.3~4.3~5.3
BB~4~TIM~3.4~4.4~5.4
File 2
AA~STEVE~AA STEVE WORKS at AUTO COMPANY
AA~DANIEL~AA DANIEL IS A ELECTRICIAN
BB~STEVE~BB STEVE IS A COOK
I want to match 1st and 3rd... (2 Replies)
In a tcl script I need to find a way of reading a file, and looking for a phrase ("set myvariable") and putting the word following that into a variable.
I've used a file open, and a while loop with gets to read each line from the file into a variable, and using regexp searched for the item. I'm... (1 Reply)
Hi,
I have written a unix expect utility "ssh-login.exp" which connects (ssh) to remote host and execute some shell script. I am calling this "ssh-login.exp" utility from another shell script.
"ssh-login.exp" takes username, password, host and shell script path to execute on remote host. All... (1 Reply)
Hi
I am writing a TCL script to delete a certain in a file
My Input file
module bist_logic_inst(a, ab , dhd, dhdh , djdj, hdh, djjd, jdj, dhd, dhp, dk
);
input a;
input ab;
input dhd;
input djdj;
input dhd;
output hdh;
output djjd;
output jdj;
output dk; (1 Reply)
Discussion started by: kshitij
1 Replies
LEARN ABOUT PLAN9
regexp
REGEXP(6) Games Manual REGEXP(6)NAME
regexp - regular expression notation
DESCRIPTION
A regular expression specifies a set of strings of characters. A member of this set of strings is said to be matched by the regular
expression. In many applications a delimiter character, commonly bounds a regular expression. In the following specification for regular
expressions the word `character' means any character (rune) but newline.
The syntax for a regular expression e0 is
e3: literal | charclass | '.' | '^' | '$' | '(' e0 ')'
e2: e3
| e2 REP
REP: '*' | '+' | '?'
e1: e2
| e1 e2
e0: e1
| e0 '|' e1
A literal is any non-metacharacter, or a metacharacter (one of .*+?[]()|^$), or the delimiter preceded by
A charclass is a nonempty string s bracketed [s] (or [^s]); it matches any character in (or not in) s. A negated character class never
matches newline. A substring a-b, with a and b in ascending order, stands for the inclusive range of characters between a and b. In s,
the metacharacters an initial and the regular expression delimiter must be preceded by a other metacharacters have no special meaning and
may appear unescaped.
A matches any character.
A matches the beginning of a line; matches the end of the line.
The REP operators match zero or more (*), one or more (+), zero or one (?), instances respectively of the preceding regular expression e2.
A concatenated regular expression, e1e2, matches a match to e1 followed by a match to e2.
An alternative regular expression, e0|e1, matches either a match to e0 or a match to e1.
A match to any part of a regular expression extends as far as possible without preventing a match to the remainder of the regular expres-
sion.
SEE ALSO awk(1), ed(1), sam(1), sed(1), regexp(2)REGEXP(6)