10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
Discussion started by: InduInduIndu
11 Replies
2. Shell Programming and Scripting
I have file with following data,
http://www.some.com/web11.html
http://www.some.com/web/112.html
http://www.some.com/web/21.html
http://www.some.com/342.html
http://www.some.com/plk.html
http://www.some.com/abh.html
http://www.some.com/yte.html
http://www.some.com/tyr/098.html... (4 Replies)
Discussion started by: sol_nov
4 Replies
3. Programming
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Discussion started by: jessy83
1 Replies
4. Shell Programming and Scripting
CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.
source $CA_VERSION_DATA
if * ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
++... (3 Replies)
Discussion started by: ketkee1985
3 Replies
5. Programming
So i'm trying to write a regular expression to help me pull id numbers from a string, the input would look something like:
"Product Name" stock=6 sid=0x000000000034c000 pid=0xd70
What I'd like is a regular expression that I could enter that would return just the pid value (and one for the sid... (4 Replies)
Discussion started by: Noremak17
4 Replies
6. Programming
Hi,
I am looking for a Java regular expression to match the below pattern of a java script file.
var so = object.device.load('camera','value');
I want to grep out such lines present in the *.js files. The conditions are:
a) the line may start with blank space(s)
b) always the... (0 Replies)
Discussion started by: royalibrahim
0 Replies
7. Programming
Hi,
I need to write a java regular expression that has the following rules:
a) should not start with space or '.' (dot) character(s)
b) should not contain spaces in between of the characters
c) total characters length must be less than 80
d) should not be empty string
Can anyone... (0 Replies)
Discussion started by: royalibrahim
0 Replies
8. Linux
Regular expression to extract "y" from "abc/x.y.z" (2 Replies)
Discussion started by: rag84dec
2 Replies
9. Shell Programming and Scripting
hello all.. I'm a bit new to this site.. and I hope to learn alot.. but I've been having a hard time figuring this out. I'm horrible with regular expressions.. so any help would be greatly appreciated.
I have a file with a list of names like this: LASTNAME, FIRSTNAME, MIDDLEINITIAL
how can... (5 Replies)
Discussion started by: mac2118
5 Replies
10. Shell Programming and Scripting
Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant.
THX! (2 Replies)
Discussion started by: Z0mby
2 Replies
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)