I'm having some trouble with using "case...esac" in Bash.
I've googled it and am stuggling to understand the syntax and how to do certain things.
Firstly, I want to be able to choose a case based on a variable number
For example, I have in my code a place where a user can enter a number using read.
Code:
read SEL
Then I want to use a case to decide what should be done.
I want it to be able to figure out whether it is a number or letter.
Using "if" you can always use
Code:
if [ $SEL -eq $SEL 2>/dev/null ]
then
echo "Is Number"
else
echo "Contains Letters or Symbols"
fi
I also want to have a case based on ranges of numbers too, but the upper range isn't a fixed number
So, in my code I find what the last number will be and define it as LASTNUM
In my case I want it be
Code:
case "$SEL"
0)
# Do Something for 0
;;
1-$LASTNUM)
# Do something for between 1 and LASTNUM
;;
Any variation of Q q or Quit)
# Do something for Q, q or Quit
;;
*)
# Do something for everything else
;;
esac
I've been really struggling and any help would be much appreciated.
It can get very annoying that bash regex =~ is case-sensetive, is there a way to set it to be case-insensetive?
if ]; then
echo match
else
echo no match
fi (8 Replies)
greetings,
I have a script that is taking input like this:
a
b
c
d
aa
bb
aaa
bbb
ccc
ddd
and formating it to be like this:
a b c d
aa bb
aaa bbb ccc ddd (4 Replies)
Hi.
The below part of my bash script kicks out the following error message:
$ ./extract_eod_report_stats_new.sh 2010-04-23
./extract_eod_report_stats_new.sh: line 204: syntax error near unexpected token `('
./extract_eod_report_stats_new.sh: line 204: `TRANSACTIONS_RECEIVED_TOP=`grep... (6 Replies)
So what i am trying to do is write a script that takes in any number of scrambeled words and unscrambles them.
I have already addressed the issues of partial matches, exits silently if there are no matches, and finds words regardless of case that they were input. but while trying to get it so... (3 Replies)
I have the following bash script and it is not accepting the lines
"--"|"--""-")
"--""-"")
while
do
echo "Current Argument is ${1}"
case "$1" in
"--"|"--""-")
echo "Argument is ${1}"
shift # Skip ahead one to the next argument.
... (1 Reply)
Hi all, I am trying to run a cronjob to push my files to my git repo once a week and output a prompt to a logfile, my script works fine if I invoke it manually but my cronjob wont run for some reason, I have sourced the file, and restarted my Mac to no avail, right now I believe I have the cronjob... (8 Replies)
Hi Gurus,
I have the below BASH code which does not works for upper case alphabets except Z (upper case Z).
What may be the reason. Also escape sequences like \n, \t, \b, \033(1m \033(0m (For bold letter) are not working.
case $var in
)
echo "Lower case alphabet"
;;
... (7 Replies)
Please - this is my FIRST ever attempt on scrip and I just want simple answer if possible.
I am modifying existing and working script.
I just want to and more to it so I started with simple insertion of working code into menu.
I am doing OK, but I cannot figure out why I am executing... (8 Replies)
Discussion started by: annacreek
8 Replies
LEARN ABOUT DEBIAN
sdl::gfx::imagefilter
pods::SDL::GFX::ImageFilter(3pm) User Contributed Perl Documentation pods::SDL::GFX::ImageFilter(3pm)NAME
SDL::GFX::ImageFilter - image filtering functions
CATEGORY
TODO, GFX
METHODS
MMX_detect
int gfx_image_MMX_detect() CODE: SDL_imageFilterMMXdetect();
MMX_off
void gfx_image_MMX_off() CODE: SDL_imageFilterMMXoff();
MMX_on
void gfx_image_MMX_on() CODE: SDL_imageFilterMMXon();
add
int gfx_image_add(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterAdd(Src1, Src2, Dest, length); OUTPUT: RETVAL
mean
int gfx_image_mean(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterMean(Src1, Src2, Dest, length); OUTPUT: RETVAL
sub
int gfx_image_sub(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterSub(Src1, Src2, Dest, length); OUTPUT: RETVAL
abs_diff
int gfx_image_abs_diff(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterAbsDiff(Src1, Src2, Dest, length); OUTPUT: RETVAL
mult
int gfx_image_mult(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterMult(Src1, Src2, Dest, length); OUTPUT: RETVAL
mult_nor
int gfx_image_mult_nor(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterMultNor(Src1, Src2, Dest, length); OUTPUT: RETVAL
mult_div_by_2
int gfx_image_mult_div_by_2(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int
length CODE: RETVAL = SDL_imageFilterMultDivby2(Src1, Src2, Dest, length); OUTPUT: RETVAL
mult_div_by_4
int gfx_image_mult_div_by_4(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int
length CODE: RETVAL = SDL_imageFilterMultDivby4(Src1, Src2, Dest, length); OUTPUT: RETVAL
bit_and
int gfx_image_bit_and(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterBitAnd(Src1, Src2, Dest, length); OUTPUT: RETVAL
bit_or
int gfx_image_bit_or(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterBitOr(Src1, Src2, Dest, length); OUTPUT: RETVAL
div
int gfx_image_div(Src1, Src2, Dest, length) unsigned char *Src1 unsigned char *Src2 unsigned char *Dest int length
CODE: RETVAL = SDL_imageFilterDiv(Src1, Src2, Dest, length); OUTPUT: RETVAL
bit_negation
int gfx_image_bit_negation(Src1, Dest, length) unsigned char *Src1 unsigned char *Dest int length CODE:
RETVAL = SDL_imageFilterBitNegation(Src1, Dest, length); OUTPUT: RETVAL
add_byte
int gfx_image_add_byte(Src1, Dest, length, C) unsigned char *Src1 unsigned char *Dest int length unsigned char C
CODE: RETVAL = SDL_imageFilterAddByte(Src1, Dest, length, C); OUTPUT: RETVAL
add_uint
int gfx_image_add_uint(Src1, Dest, length, C) unsigned char *Src1 unsigned char *Dest int length unsigned int C
CODE: RETVAL = SDL_imageFilterAddUint(Src1, Dest, length, C); OUTPUT: RETVAL
add_byte_to_half
int gfx_image_add_byte_to_half(Src1, Dest, length, C) unsigned char *Src1 unsigned char *Dest int length unsigned char
C CODE: RETVAL = SDL_imageFilterAddByteToHalf(Src1, Dest, length, C); OUTPUT: RETVAL
sub_byte
int gfx_image_sub_byte(Src1, Dest, length, C) unsigned char *Src1 unsigned char *Dest int length unsigned char C
CODE: RETVAL = SDL_imageFilterSubByte(Src1, Dest, length, C); OUTPUT: RETVAL
sub_uint
int gfx_image_sub_uint(Src1, Dest, length, C) unsigned char *Src1 unsigned char *Dest int length unsigned int C
CODE: RETVAL = SDL_imageFilterSubUint(Src1, Dest, length, C); OUTPUT: RETVAL
shift_right
int gfx_image_shift_right(Src1, Dest, length, N) unsigned char *Src1 unsigned char *Dest int length unsigned char N
CODE: RETVAL = SDL_imageFilterShiftRight(Src1, Dest, length, N); OUTPUT: RETVAL
shift_right_uint
int gfx_image_shift_right_uint(Src1, Dest, length, N) unsigned char *Src1 unsigned char *Dest int length unsigned char
N CODE: RETVAL = SDL_imageFilterShiftRightUint(Src1, Dest, length, N); OUTPUT: RETVAL
mult_by_byte
int gfx_image_mult_by_byte(Src1, Dest, length, C) unsigned char *Src1 unsigned char *Dest int length unsigned char C
CODE: RETVAL = SDL_imageFilterMultByByte(Src1, Dest, length, C); OUTPUT: RETVAL
shift_right_and_mult_by_byte
int gfx_image_shift_right_and_mult_by_byte(Src1, Dest, length, N, C) unsigned char *Src1 unsigned char *Dest int length
unsigned char N unsigned char C CODE: RETVAL = SDL_imageFilterShiftRightAndMultByByte(Src1, Dest, length, N, C);
OUTPUT: RETVAL
shift_left_byte
int gfx_image_shift_left_byte(Src1, Dest, length, N) unsigned char *Src1 unsigned char *Dest int length unsigned char N
CODE: RETVAL = SDL_imageFilterShiftLeftByte(Src1, Dest, length, N); OUTPUT: RETVAL
shift_left_uint
int gfx_image_shift_left_uint(Src1, Dest, length, N) unsigned char *Src1 unsigned char *Dest int length unsigned char N
CODE: RETVAL = SDL_imageFilterShiftLeftUint(Src1, Dest, length, N); OUTPUT: RETVAL
shift_left
int gfx_image_shift_left(Src1, Dest, length, N) unsigned char *Src1 unsigned char *Dest int length unsigned char N
CODE: RETVAL = SDL_imageFilterShiftLeft(Src1, Dest, length, N); OUTPUT: RETVAL
binarize_using_threshold
int gfx_image_binarize_using_threshold(Src1, Dest, length, T) unsigned char *Src1 unsigned char *Dest int length
unsigned char T CODE: RETVAL = SDL_imageFilterBinarizeUsingThreshold(Src1, Dest, length, T); OUTPUT:
RETVAL
clip_to_range
int gfx_image_clip_to_range(Src1, Dest, length, Tmin, Tmax) unsigned char *Src1 unsigned char *Dest int length unsigned
char Tmin unsigned char Tmax CODE: RETVAL = SDL_imageFilterClipToRange(Src1, Dest, length, Tmin, Tmax); OUTPUT:
RETVAL
normalize_linear
int gfx_image_normalize_linear(Src1, Dest, length, Cmin, Cmax, Nmin, Nmax) unsigned char *Src1 unsigned char *Dest int
length int Cmin int Cmax int Nmin int Nmax CODE: RETVAL = SDL_imageFilterNormalizeLinear(Src1, Dest,
length, Cmin, Cmax, Nmin, Nmax); OUTPUT: RETVAL
convolve_kernel_3x3_divide
int gfx_image_convolve_kernel_3x3_divide(Src, Dest, rows, columns, Kernel, Divisor) unsigned char *Src unsigned char *Dest
int rows int columns Sint16 *Kernel unsigned char Divisor CODE: RETVAL =
SDL_imageFilterConvolveKernel3x3Divide(Src, Dest, rows, columns, Kernel, Divisor); OUTPUT: RETVAL
convolve_kernel_5x5_divide
int gfx_image_convolve_kernel_5x5_divide(Src, Dest, rows, columns, Kernel, Divisor) unsigned char *Src unsigned char *Dest
int rows int columns Sint16 *Kernel unsigned char Divisor CODE: RETVAL =
SDL_imageFilterConvolveKernel5x5Divide(Src, Dest, rows, columns, Kernel, Divisor); OUTPUT: RETVAL
convolve_kernel_7x7_divide
int gfx_image_convolve_kernel_7x7_divide(Src, Dest, rows, columns, Kernel, Divisor) unsigned char *Src unsigned char *Dest
int rows int columns Sint16 *Kernel unsigned char Divisor CODE: RETVAL =
SDL_imageFilterConvolveKernel7x7Divide(Src, Dest, rows, columns, Kernel, Divisor); OUTPUT: RETVAL
convolve_kernel_9x9_divide
int gfx_image_convolve_kernel_9x9_divide(Src, Dest, rows, columns, Kernel, Divisor) unsigned char *Src unsigned char *Dest
int rows int columns Sint16 *Kernel unsigned char Divisor CODE: RETVAL =
SDL_imageFilterConvolveKernel9x9Divide(Src, Dest, rows, columns, Kernel, Divisor); OUTPUT: RETVAL
convolve_kernel_3x3_shift_right
int gfx_image_convolve_kernel_3x3_shift_right(Src, Dest, rows, columns, Kernel, NRightShift) unsigned char *Src unsigned char
*Dest int rows int columns Sint16 *Kernel unsigned char NRightShift CODE: RETVAL =
SDL_imageFilterConvolveKernel3x3ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift); OUTPUT: RETVAL
convolve_kernel_5x5_shift_right
int gfx_image_convolve_kernel_5x5_shift_right(Src, Dest, rows, columns, Kernel, NRightShift) unsigned char *Src unsigned char
*Dest int rows int columns Sint16 *Kernel unsigned char NRightShift CODE: RETVAL =
SDL_imageFilterConvolveKernel5x5ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift); OUTPUT: RETVAL
convolve_kernel_7x7_shift_right
int gfx_image_convolve_kernel_7x7_shift_right(Src, Dest, rows, columns, Kernel, NRightShift) unsigned char *Src unsigned char
*Dest int rows int columns Sint16 *Kernel unsigned char NRightShift CODE: RETVAL =
SDL_imageFilterConvolveKernel7x7ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift); OUTPUT: RETVAL
convolve_kernel_9x9_shift_right
int gfx_image_convolve_kernel_9x9_shift_right(Src, Dest, rows, columns, Kernel, NRightShift) unsigned char *Src unsigned char
*Dest int rows int columns Sint16 *Kernel unsigned char NRightShift CODE: RETVAL =
SDL_imageFilterConvolveKernel9x9ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift); OUTPUT: RETVAL
sobel_x
int gfx_image_sobel_x(Src, Dest, rows, columns) unsigned char *Src unsigned char *Dest int rows int columns CODE:
RETVAL = SDL_imageFilterSobelX(Src, Dest, rows, columns); OUTPUT: RETVAL
sobel_x_shift_right
int gfx_image_sobel_x_shift_right(Src, Dest, rows, columns, NRightShift) unsigned char *Src unsigned char *Dest int rows
int columns unsigned char NRightShift CODE: RETVAL = SDL_imageFilterSobelXShiftRight(Src, Dest, rows, columns,
NRightShift); OUTPUT: RETVAL
align_stack
void gfx_image_align_stack() CODE: SDL_imageFilterAlignStack();
restore_stack
void gfx_image_restore_stack() CODE: SDL_imageFilterRestoreStack();
AUTHORS
See "AUTHORS" in SDL.
perl v5.14.2 2012-05-28 pods::SDL::GFX::ImageFilter(3pm)
10-12-2012
