example

kly@r2d2:~$ ./foo.c.sh foo.c.sh 
0x23 0x21 0x2F 0x62 0x69 0x6E 0x2F 0x62  #!/bin/b
0x61 0x73 0x68 0x0A 0x0A 0x0A 0x5F 0x74  ash..._t
0x65 0x6D 0x70 0x3D 0x24 0x28 0x6D 0x6B  emp=$(mk
0x74 0x65 0x6D 0x70 0x29 0x0A 0x0A 0x67  temp)..g
0x63 0x63 0x20 0x2D 0x78 0x20 0x63 0x20  cc.-x.c.
0x2D 0x6F 0x20 0x24 0x5F 0x74 0x65 0x6D  -o.$_tem
0x70 0x20 0x2D 0x20 0x3C 0x3C 0x5F 0x45  p.-.<<_E
0x4F 0x46 0x5F 0x0A 0x23 0x69 0x6E 0x63  OF_.#inc
0x6C 0x75 0x64 0x65 0x20 0x3C 0x73 0x74  lude.<st
0x64 0x69 0x6F 0x2E 0x68 0x3E 0x0A 0x23  dio.h>.#
0x69 0x6E 0x63 0x6C 0x75 0x64 0x65 0x20  include.
0x3C 0x63 0x74 0x79 0x70 0x65 0x2E 0x68  <ctype.h
0x3E 0x0A 0x0A 0x69 0x6E 0x74 0x20 0x6D  >..int.m
0x61 0x69 0x6E 0x28 0x29 0x20 0x7B 0x0A  ain().{.
0x09 0x69 0x6E 0x74 0x20 0x63 0x3B 0x0A  .int.c;.
0x09 0x69 0x6E 0x74 0x20 0x64 0x65 0x6C  .int.del
0x69 0x6D 0x3D 0x30 0x3B 0x0A 0x09 0x63  im=0;..c
0x68 0x61 0x72 0x20 0x73 0x74 0x72 0x69  har.stri
0x6E 0x67 0x5B 0x31 0x30 0x5D 0x3B 0x0A  ng[10];.
0x09 0x77 0x68 0x69 0x6C 0x65 0x28 0x63  .while(c
0x20 0x3D 0x20 0x67 0x65 0x74 0x63 0x68  .=.getch
0x61 0x72 0x28 0x29 0x29 0x20 0x7B 0x0A  ar()).{.
0x09 0x09 0x69 0x66 0x20 0x28 0x63 0x21  ..if.(c!
0x3D 0x45 0x4F 0x46 0x29 0x0A 0x09 0x09  =EOF)...
0x09 0x70 0x72 0x69 0x6E 0x74 0x66 0x28  .printf(
0x22 0x30 0x78 0x25 0x30 0x32 0x58 0x20  "0x%02X.
0x22 0x2C 0x63 0x29 0x3B 0x0A 0x09 0x09  ",c);...
0x65 0x6C 0x73 0x65 0x0A 0x09 0x09 0x09  else....
0x70 0x72 0x69 0x6E 0x74 0x66 0x28 0x22  printf("
0x20 0x20 0x20 0x20 0x20 0x22 0x29 0x3B  .....");
0x0A 0x09 0x09 0x73 0x74 0x72 0x69 0x6E  ...strin
0x67 0x5B 0x64 0x65 0x6C 0x69 0x6D 0x5D  g[delim]
0x3D 0x20 0x28 0x69 0x73 0x61 0x6C 0x6E  =.(isaln
0x75 0x6D 0x28 0x63 0x29 0x20 0x7C 0x7C  um(c).||
0x20 0x69 0x73 0x70 0x75 0x6E 0x63 0x74  .ispunct
0x28 0x63 0x29 0x29 0x20 0x3F 0x20 0x63  (c)).?.c
0x3A 0x20 0x63 0x21 0x3D 0x45 0x4F 0x46  :.c!=EOF
0x3F 0x27 0x2E 0x27 0x3A 0x27 0x20 0x27  ?'.':'.'
0x3B 0x0A 0x09 0x09 0x64 0x65 0x6C 0x69  ;...deli
0x6D 0x2B 0x2B 0x3B 0x0A 0x09 0x09 0x69  m++;...i
0x66 0x20 0x28 0x28 0x63 0x3D 0x3D 0x45  f.((c==E
0x4F 0x46 0x29 0x20 0x7C 0x7C 0x20 0x28  OF).||.(
0x64 0x65 0x6C 0x69 0x6D 0x20 0x3D 0x3D  delim.==
0x20 0x38 0x29 0x29 0x20 0x7B 0x0A 0x09  .8)).{..
0x09 0x09 0x73 0x74 0x72 0x69 0x6E 0x67  ..string
0x5B 0x64 0x65 0x6C 0x69 0x6D 0x5D 0x20  [delim].
0x3D 0x20 0x27 0x5C 0x30 0x27 0x3B 0x0A  =.'\0';.
0x09 0x09 0x09 0x77 0x68 0x69 0x6C 0x65  ...while
0x28 0x64 0x65 0x6C 0x69 0x6D 0x2B 0x2B  (delim++
0x3C 0x38 0x29 0x0A 0x09 0x09 0x09 0x09  <8).....
0x70 0x72 0x69 0x6E 0x74 0x66 0x28 0x22  printf("
0x20 0x20 0x20 0x20 0x20 0x22 0x29 0x3B  .....");
0x0A 0x09 0x09 0x09 0x70 0x72 0x69 0x6E  ....prin
0x74 0x66 0x28 0x22 0x20 0x25 0x73 0x5C  tf(".%s\
0x6E 0x22 0x2C 0x73 0x74 0x72 0x69 0x6E  n",strin
0x67 0x29 0x3B 0x0A 0x09 0x09 0x09 0x64  g);....d
0x65 0x6C 0x69 0x6D 0x3D 0x30 0x3B 0x0A  elim=0;.
0x09 0x09 0x7D 0x0A 0x09 0x09 0x69 0x66  ..}...if
0x20 0x28 0x63 0x20 0x3D 0x3D 0x20 0x45  .(c.==.E
0x4F 0x46 0x29 0x20 0x0A 0x09 0x09 0x09  OF).....
0x72 0x65 0x74 0x75 0x72 0x6E 0x20 0x30  return.0
0x3B 0x0A 0x09 0x7D 0x0A 0x7D 0x0A 0x5F  ;..}.}._
0x45 0x4F 0x46 0x5F 0x0A 0x24 0x5F 0x74  EOF_.$_t
0x65 0x6D 0x70 0x20 0x3C 0x24 0x31 0x0A  emp.<$1.
0x72 0x6D 0x20 0x24 0x5F 0x74 0x65 0x6D  rm.$_tem
0x70 0x0A                                p. 

foo.c.sh

#!/bin/bash


_temp=$(mktemp)

gcc -x c -o $_temp - <<_EOF_
#include <stdio.h>
#include <ctype.h>

int main() {
	int c;
	int delim=0;
	char string[10];
	while(c = getchar()) {
		if (c!=EOF)
			printf("0x%02X ",c);
		else
			printf("     ");
		string[delim]= (isalnum(c) || ispunct(c)) ? c: c!=EOF?'.':' ';
		delim++;
		if ((c==EOF) || (delim == 8)) {
			string[delim] = '\0';
			while(delim++<8)
				printf("     ");
			printf(" %s\n",string);
			delim=0;
		}
		if (c == EOF) 
			return 0;
	}
}
_EOF_
$_temp <$1
rm $_temp