What is objdump Linux command?
The objdump command in Linux is used for analyzing object files and binaries. It provides information about the executable files, sections, symbols, and disassembled machine code. This tool is helpful for debugging, understanding file structure, and reverse engineering.
objdump Syntax:
Section titled “objdump Syntax:”objdump [options] <file>objdump Options:
Section titled “objdump Options:”| Option | Description |
|---|---|
| -a, —archive | Display the archive headers |
| -d, —disassemble | Display assembler contents of executable sections |
| -h, —section-headers | Display the section headers |
| -x, —all-headers | Display all headers |
| -t, —syms | Display the symbol table |
| -T, —dynamic-syms | Display the dynamic symbol table |
| -r, —relocs | Display the relocations in the file |
| -R, —dynamic-relocs | Display dynamic relocations |
Parameters:
Section titled “Parameters:”| Parameter | Description |
|---|---|
| file | The executable file to be analyzed |
objdump Command Usage Examples:
Section titled “objdump Command Usage Examples:”Display File Header Information
Section titled “Display File Header Information”objdump -f executable_fileThis command displays the file header information of the specified executable file.
Display Section Headers
Section titled “Display Section Headers”objdump -h executable_fileDisplays the section headers of the specified executable file.
Disassemble All Sections
Section titled “Disassemble All Sections”objdump -d executable_fileDisassembles all sections in the specified executable file.
Display Symbol Table
Section titled “Display Symbol Table”objdump -t executable_fileDisplays the symbol table of the specified executable file.
Disassemble Specific Section
Section titled “Disassemble Specific Section”objdump -d --section=.text executable_fileDisassembles a specific section (in this case, .text) of the specified executable file.
How do I use objdump in Linux?
Section titled “How do I use objdump in Linux?”To use the objdump command in bash, execute the following command:
objdump -d executable_fileWhat is the purpose of objdump in Linux?
Section titled “What is the purpose of objdump in Linux?”The objdump command is used for displaying information about object files, libraries, and executables.
How can I display the headers of a binary file using objdump?
Section titled “How can I display the headers of a binary file using objdump?”To display the headers of a binary file using objdump, run the following command:
objdump -h executable_fileHow can I disassemble all sections of a binary file using objdump?
Section titled “How can I disassemble all sections of a binary file using objdump?”You can disassemble all sections of a binary file using objdump by executing the following command:
objdump -d executable_fileHow do I list the symbols in a binary file with objdump?
Section titled “How do I list the symbols in a binary file with objdump?”To list the symbols in a binary file using objdump, use the following command:
objdump -t executable_fileHow to generate raw symbol table with line numbers using objdump?
Section titled “How to generate raw symbol table with line numbers using objdump?”To generate a raw symbol table with line numbers using objdump, run the command below:
objdump -t -S executable_fileHow can I view the dynamic symbol table of a binary file with objdump?
Section titled “How can I view the dynamic symbol table of a binary file with objdump?”To view the dynamic symbol table of a binary file using objdump, execute the following command:
objdump -T executable_fileHow can I disassemble a particular section of a binary file with objdump?
Section titled “How can I disassemble a particular section of a binary file with objdump?”You can disassemble a specific section of a binary file using objdump by running the command below:
objdump -d --section=.text executable_fileApplications of the objdump command
Section titled “Applications of the objdump command”- Disassembling executable files
- Analyzing object files
- Extracting information about sections in a binary
- Examining symbol tables
- Inspecting dynamic libraries
- Identifying architecture information
- Generating architecture specific information