12-10-2010
Identify the position of character
Hi,
Can some one guide me to identify the position of a character using index in UNIX.
I have a record like "17/11/2010 15:16:39;reject;10.44.48.65;daemon alert; src: 10.44.48.112; dst: 172.21.52.88" . I need to identify the value which comes after _src:_ (_ denotes space).
I am able to identify the no. of characters till _src:_ as below:
s1="17/11/2010 15:16:39;reject;10.44.48.65;daemon alert src: 10.44.48.112; dst: 172.21.52.88"
s2=" src: "
start_val=`awk -v a="$s1" -v b="$s2" 'BEGIN{print index(a,b)+6}'`
But am not able to identify the character position of ";" which comes after _src:_ .
If I can identify that character position then I can pick the value using substr.
Can some one help me to identify the position.
Also If any one is having better approach please guide me.
Many Thanks in advance.
MSK
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LEARN ABOUT OPENSOLARIS
mlib_signalemphasize_s16_s16_sat
mlib_SignalEmphasize_S16_S16_Sat(3MLIB) mediaLib Library Functions mlib_SignalEmphasize_S16_S16_Sat(3MLIB)
NAME
mlib_SignalEmphasize_S16_S16_Sat, mlib_SignalEmphasize_S16S_S16S_Sat, mlib_SignalEmphasize_F32_F32, mlib_SignalEmphasize_F32S_F32S - signal
pre-emphasizing
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_SignalEmphasize_S16_S16_Sat(mlib_s16 *dst,
const mlib_s16 *src, void *filter, mlib_s32 n);
mlib_status mlib_SignalEmphasize_S16S_S16S_Sat(mlib_s16 *dst,
const mlib_s16 *src, void *filter, mlib_s32 n);
mlib_status mlib_SignalEmphasize_F32_F32(mlib_f32 *dst,
const mlib_f32 *src, void *filter, mlib_s32 n);
mlib_status mlib_SignalEmphasize_F32S_F32S(mlib_f32 *dst,
const mlib_f32 *src, void *filter, mlib_s32 n);
DESCRIPTION
Each of these functions applies the preemphasizer to one signal packet and updates the filter states.
For monaural signals, the following equation is used:
dst[i] = src[i] - alpha*src[i - 1]
where i = 0, 1, ..., (n - 1); src[-1] = 0.
For stereo signals, the following equation is used:
dst[2*i] = src[2*i] - alpha*src[2*(i - 1)]
dst[2*i + 1] = src[2*i + 1] - alpha*src[2*(i - 1) + 1]
where i = 0, 1, ..., (n - 1); src[-2] = src[-1] = 0.
PARAMETERS
Each of the functions takes the following arguments:
dst Destination signal array.
src Source signal array.
filter Internal filter structure.
n Number of samples in the source signal array.
RETURN VALUES
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
mlib_SignalEmphasizeFree_S16_S16(3MLIB), mlib_SignalEmphasizeInit_S16_S16(3MLIB), attributes(5)
SunOS 5.11 2 Mar 2007 mlib_SignalEmphasize_S16_S16_Sat(3MLIB)