strip 命令去除目标文件中的符号表，调试符号表，减少程序的大小

[chenxitwo]

如题，去除调试信息： strip -d input_file
具体用法如下：
strip -h
Usage: strip <option(s)> in-file(s)
Removes symbols and sections from files
The options are:
-I --input-target=<bfdname> Assume input file is in format <bfdname>
-O --output-target=<bfdname> Create an output file in format <bfdname>
-F --target=<bfdname> Set both input and output format to <bfdname>
-p --preserve-dates Copy modified/access timestamps to the output
-D --enable-deterministic-archives
Produce deterministic output when stripping archives
-U --disable-deterministic-archives
Disable -D behavior (default)
-R --remove-section=<name> Remove section <name> from the output
-s --strip-all Remove all symbol and relocation information
-g -S -d --strip-debug Remove all debugging symbols & sections
--strip-dwo Remove all DWO sections
--strip-unneeded Remove all symbols not needed by relocations
--only-keep-debug Strip everything but the debug information
-N --strip-symbol=<name> Do not copy symbol <name>
-K --keep-symbol=<name> Do not strip symbol <name>
--keep-file-symbols Do not strip file symbol(s)
-w --wildcard Permit wildcard in symbol comparison
-x --discard-all Remove all non-global symbols
-X --discard-locals Remove any compiler-generated symbols
-v --verbose List all object files modified
-V --version Display this program's version number
-h --help Display this output
--info List object formats & architectures supported
-o <file> Place stripped output into <file>
strip: supported targets: elf64-x86-64 elf32-i386 elf32-x86-64 a.out-i386-linux pei-i386 pei-x86-64 elf64-l1om elf64-k1om elf64-little elf64-big elf32-little elf32-big pe-x86-64 pe-i386 plugin srec symbolsrec verilog tekhex binary ihex
Report bugs to <http://www.sourceware.org/bugzilla/>

Notes：如果是非host程序，记得使用交叉编译器