8 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All
I am a new in scripting language and I would like help for you guys
I would like to create a file named constant.h and search into all files *.m in specific directory for a reg-exp @"LBL_]+" exp: @"LBL_75847" , and write those matchs to constant.h if there are not written (no... (15 Replies)
Discussion started by: molwiko
15 Replies
2. Shell Programming and Scripting
$var1="LEN";
$VAR2="CODLENTT";
now, var2 contains var1(LEN).How do i check this in perl....
whether one string is a part of another..?
if (<logic>)
{
my operation;
}
what'd be the logic.. (4 Replies)
Discussion started by: vijay_0209
4 Replies
3. Shell Programming and Scripting
Hi,
I am using the following piece of code for extracting some data from in between some tags ...
$text =~ /<TAG1>(.*)<\/TAG1>.*<TAG2>(.*)<\/TAG2>.*<TAG3>(.*)<\/TAG4>.*<TAG5>(.*)<\/TAG5>/;
$tag1=$1;
print "\n$tag1";
But I am getting an error like
Use of uninitialized value in... (1 Reply)
Discussion started by: King Nothing
1 Replies
4. UNIX for Dummies Questions & Answers
Hi, I need
to make some extraction . with the following input to get the right output.
input: /etc/exp/home/bin ====> output: exp
and
input: aex1234 ===> output: ex
Thanks for your help, (4 Replies)
Discussion started by: yeclota
4 Replies
5. Shell Programming and Scripting
$ cat file.txt
asd
<AA>dev
<LL>def
<RR>sha
This works for me:
$ sed -r 's/^ .*<LL>def/\t<LL>my/' file.txt
asd
<AA>dev
<LL>my
<RR>sha
But, this does not work for me:
$ sed -r 's/^\s+<LL>def/\t<LL>my/' file.txt
asd
... (1 Reply)
Discussion started by: demoprog
1 Replies
6. Shell Programming and Scripting
Hi,
Should be a difference between ']]*' and ']+' ?
I use them in bash with sed and grep.
Thanks (1 Reply)
Discussion started by: ynir
1 Replies
7. Shell Programming and Scripting
in shell scripting there is extensive usage of
i> regular expression
ii>sed
iii>awk
can anyone tell me the suitable contexts ...i mean which one is suitable for what kind of operation.
like the reg-exp and sed seems to be doing the same job..i.e pattern matching (1 Reply)
Discussion started by: mobydick
1 Replies
8. Shell Programming and Scripting
Any idea please:
How to pass a reg. exp. variable to awk call in a shell???
Thank u
#!/bin/sh
reg_exp=name
awk '/reg_exp/{
print;
}' $1 (5 Replies)
Discussion started by: andy2000
5 Replies
EXP(3) Linux Programmer's Manual EXP(3)
NAME
exp, expf, expl - base-e exponential function
SYNOPSIS
#include <math.h>
double exp(double x);
float expf(float x);
long double expl(long double x);
Link with -lm.
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
expf(), expl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99
DESCRIPTION
The exp() function returns the value of e (the base of natural logarithms) raised to the power of x.
RETURN VALUE
On success, these functions return the exponential value of x.
If x is a NaN, a NaN is returned.
If x is positive infinity, positive infinity is returned.
If x is negative infinity, +0 is returned.
If the result underflows, a range error occurs, and zero is returned.
If the result overflows, a range error occurs, and the functions return +HUGE_VAL, +HUGE_VALF, or +HUGE_VALL, respectively.
ERRORS
See math_error(7) for information on how to determine whether an error has occurred when calling these functions.
The following errors can occur:
Range error, overflow
errno is set to ERANGE. An overflow floating-point exception (FE_OVERFLOW) is raised.
Range error, underflow
errno is set to ERANGE. An underflow floating-point exception (FE_UNDERFLOW) is raised.
CONFORMING TO
C99, POSIX.1-2001. The variant returning double also conforms to SVr4, 4.3BSD, C89.
SEE ALSO
cbrt(3), cexp(3), exp10(3), exp2(3), sqrt(3)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2008-08-05 EXP(3)
