10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I need to pick a part of string lets stay started with specific character and end with specific character to replace using sed command
the line is like this:my audio book 71-skhdfon1dufgjhgf8.wav'
I want to move the characters beginning with - end before.
I have different files with random... (2 Replies)
Discussion started by: XP_2600
2 Replies
2. UNIX for Beginners Questions & Answers
Hello all- New to this forum, and relatively new to using grep at the Terminal command line to work with regular expressions. I've got a background in mathematics and some programming experience, so it's not been too difficult to learn the basics of searching through word lists for particular types... (6 Replies)
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3. Shell Programming and Scripting
I have a file that I'm trying to find all the cases of phone number extensions and deleting them. So input file looks like:
abc
x93825
def
13234
x52673
hello
output looks like:
abc
def
13234
hello
Basically delete lines that have 5 numbers following "x". I tried: x\(4) but it... (7 Replies)
Discussion started by: pxalpine
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4. Shell Programming and Scripting
what elements does " /^/ " match?
I did the test which indicates that it matches single lowercase character like 'a','b' etc. and '1','2' etc.
But I really confused with that. Because, "/^abc/" matches strings like "abcedf" or "abcddddee".
So, what does caret ^ really mean?
Any response... (2 Replies)
Discussion started by: DavidHe
2 Replies
5. UNIX for Dummies Questions & Answers
In regular expressions with grep(or egrep), ^ works if we want something in starting of line..but what if we write ^^^ or ^ for pattern matching??..Hope u all r familiar with regular expressions for pattern matching.. (1 Reply)
Discussion started by: aadi_uni
1 Replies
6. UNIX for Advanced & Expert Users
I have a flat file with the following drug names
Nutropin AQ 20mg PEN Cart 2ml
Norditropin Cart 15mg/1.5ml
I have to extract digits that are before mg i.e 20 and 15 ; how to do this using regular expressions
Thanks
ram (1 Reply)
Discussion started by: ramky79
1 Replies
7. UNIX for Dummies Questions & Answers
how to find for a file whose name has all characters in uppercase after 'project'?
I tried this:
find . -name 'project**.pdf'
./projectABC.pdf
./projectABC123.pdf
I want only ./projectABC.pdf
What is the regular expression that correponds to "all characters are capital"?
thanks (8 Replies)
Discussion started by: melanie_pfefer
8 Replies
8. Shell Programming and Scripting
I have following content in the file
CancelPolicyMultiLingual3=U|PC3|EN
RestaurantInfoCode1=U|restID1|1
.....
I am trying to use following matching extression
\|(+)
to get this
PC3|EN
restID1|1
Obviously it does not work.
Any ideas? (13 Replies)
Discussion started by: arushunter
13 Replies
9. Programming
How do I use the regular expressions in c++? (2 Replies)
Discussion started by: szzz
2 Replies
10. Shell Programming and Scripting
I'm trying to parse RichText to XML. I want to be able to capture everything between the '/par' tag in the RTF but not include the tag itself. So far all I have is this, '.*?\\par' but it leaves '\par' at the end of it. Any suggestions? (1 Reply)
Discussion started by: AresMedia
1 Replies
re_comp(3C) Standard C Library Functions re_comp(3C)
NAME
re_comp, re_exec - compile and execute regular expressions
SYNOPSIS
#include <re_comp.h>
char *re_comp(const char *string);
int re_exec(const char *string);
DESCRIPTION
The re_comp() function converts a regular expression string (RE) into an internal form suitable for pattern matching. The re_exec() func-
tion compares the string pointed to by the string argument with the last regular expression passed to re_comp().
If re_comp() is called with a null pointer argument, the current regular expression remains unchanged.
Strings passed to both re_comp() and re_exec() must be terminated by a null byte, and may include NEWLINE characters.
The re_comp() and re_exec() functions support simple regular expressions, which are defined on the regexp(5) manual page. The regular
expressions of the form {m}, {m,}, or {m,n} are not supported.
RETURN VALUES
The re_comp() function returns a null pointer when the string pointed to by the string argument is successfully converted. Otherwise, a
pointer to one of the following error message strings is returned:
No previous regular expression
Regular expression too long
unmatched (
missing ]
too many () pairs
unmatched )
Upon successful completion, re_exec() returns 1 if string matches the last compiled regular expression. Otherwise, re_exec() returns 0 if
string fails to match the last compiled regular expression, and -1 if the compiled regular expression is invalid (indicating an internal
error).
ERRORS
No errors are defined.
USAGE
For portability to implementations conforming to X/Open standards prior to SUS, regcomp(3C) and regexec(3C) are preferred to these func-
tions. See standards(5).
SEE ALSO
grep(1), regcmp(1), regcmp(3C), regcomp(3C), regexec(3C), regexpr(3GEN), regexp(5), standards(5)
SunOS 5.10 26 Feb 1997 re_comp(3C)