how to inspect the bytes in a file? Post: 302307106

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Take a file from the system and put on tape and reset the file to 0 bytes

:mad: I did this the other day but one of my support personnel removed my history so i could call it back up to remeber the exact command since i am air-headed at times. I am trying to take a 30 MEG file off the system and drop it to tape then i want to make the file go back to being 0 bytes so...

2. Shell Programming and Scripting

delete bytes from file

I'm doing a bit of hex editing with dd and I can replace values fairly simply. However, I've run across a situation where I need to delete bytes in the file and I'm not sure how to do that. For example: Input file has: 1234567890 Output needs to be: 123abc90 I tried this: printf...

3. Shell Programming and Scripting

Remove first N bytes and last N bytes from a binary file on AIX.

Hi all, Does anybody know or guide me on how to remove the first N bytes and the last N bytes from a binary file? Is there any AWK or SED or any command that I can use to achieve this? Your help is greatly appreciated!! Best Regards, Naveen.

4. UNIX for Dummies Questions & Answers

Bytes of character in file

Hi, How do I check for the total bytes of character used by a file? Can I used a od command to check? Thanks.

5. Shell Programming and Scripting

Error PHP Fatal error: Allowed memory size of 67108864 bytes exhausted(tried to allocate 401 bytes)

While running script I am getting an error like Few lines in data are not being processed. After googling it I came to know that adding such line would give some memory to it ini_set("memory_limit","64M"); my input file size is 1 GB. Is that memory limit is based on RAM we have on...

6. Programming

Copying 1024 bytes data in 3-bytes chunk

Hi, If I want to copy a 1024 byte data stream in to the target location in 3-bytes chunk, I guess I can use the following script. dd bs=1024 count=3 if=/src of=/dest But, I would like to know, how to do it via a C program. I have tried this with memcpy(), that did not help.

7. UNIX for Dummies Questions & Answers

X bytes of 0, Y bytes of random data, Z bytes of 5, T bytes of 1. ??

Hello guys. I really hope someone will help me with this one.. So, I have to write this script who: - creates a file home/student/vmdisk of 10 mb - formats that file to ext3 - mounts that partition to /mnt/partition - creates a file /mnt/partition/data. In this file, there will...

8. Shell Programming and Scripting

Shell script - entered input(1-40 bytes) needs to be converted exactly 40 bytes

hello, suppose, entered input is of 1-40 bytes, i need it to be converted to 40 bytes exactly. example: if i have entered my name anywhere between 1-40 i want it to be stored with 40 bytes exactly. enter your name: donald duck (this is of 11 bytes) expected is as below - display 11...

9. Shell Programming and Scripting

Get file's first x bytes

is there a better way to do this: head -c 10000k /var/dump.log | head -c 6000k unfortunately, the "-c" option is not available on sun solaris. so i'm looking at "dd". but i dont know how to use it to achieve the same exact goal as the above head command. this needs to work on both solaris...

10. Shell Programming and Scripting

awk code to inspect variable before printing

i have a unique scenario id like help with. im currently running this command and it does what i want: printf '%s\n' "${RawContent}" | awk '/## Beginning Stages ##/,/## Ending Stages ##/' | awk '!/^#.*\!|^#\!|DefaultError/' Can this be shortened? I'm looking for something portable as...

LEARN ABOUT HPUX

elf_getehdr

elf_getehdr(3E) 														   elf_getehdr(3E)

NAME

       elf_getehdr:  elf32_getehdr(), elf32_newehdr(), elf64_getehdr(), elf64_newehdr() - retrieve class-dependent object file header for elf32 or
       elf64 file

SYNOPSIS

       Command: [flag]... file... [library]...

DESCRIPTION

   32-bit Class File
       For a 32-bit class file, returns a pointer to an ELF header, if one is available for the ELF descriptor elf.  If no header exists  for  the
       descriptor,  allocates  a "clean" one, but it otherwise behaves the same as It does not allocate a new header if one exists already.  If no
       header exists (for one cannot be created (for a system error occurs, the file is not a 32-bit class file, or elf is  null,  both  functions
       return a null pointer.  The header includes the following members.

       automatically sets the bit (see elf_flag(3E)).  A program may use to inspect the identification bytes from a file.

   64-bit Class File
       For  a  64-bit class file, returns a pointer to an ELF header, if one is available for the ELF descriptor elf.  If no header exists for the
       descriptor, allocates a "clean" one, but it otherwise behaves the same as It does not allocate a new header if one exists already.   If	no
       header  exists  (for  one cannot be created (for a system error occurs, the file is not a 64-bit class file, or elf is null, both functions
       return a null pointer.  The header includes the following members.

       automatically sets the bit (see elf_flag(3E)).  A program may use to inspect the identification bytes from a file.

SEE ALSO

       elf(3E), elf_begin(3E), elf_flag(3E), elf_getident(3E).

																   elf_getehdr(3E)