Linux strip command
Discard symbols from object files.
strip is a GNU utility to "strip" symbols from object files. This is useful for minimizing their file size, streamlining them for distribution. It can also be useful for making it more difficult to reverse-engineer the compiled code.
strip [options] objfile [...]
|-F bfdname, --target=bfdname||Treat the original objfile as a file with the object code format bfdname, and rewrite it in the same format.|
|--help||Show a summary of the options to strip and exit.|
|--info||Display a list showing all architectures and object formats available.|
|-I bfdname, --input-target=bfdname||Treat the original objfile as a file with the object code format bfdname.|
|-O bfdname, --output-target=bfdname||Replace objfile with a file in the output format bfdname.|
|-R sectionname, --remove-section=sectionname||Remove any section named sectionname from the output file. This option may be given more than once. Note that using this option inappropriately may make the output file unusable.|
|-s, --strip-all||Remove all symbols.|
|-g, -S, -d, --strip-debug||Remove debugging symbols only.|
|--strip-dwo||Remove the contents of all DWARF .dwo sections, leaving the remaining debugging sections and all symbols intact.|
|--strip-unneeded||Remove all symbols that are not needed for relocation processing.|
|-K symbolname, --keep-symbol=symbolname||When stripping symbols, keep symbol symbolname even if it would normally be stripped. This option may be given more than once.|
|-N symbolname, --strip-symbol=symbolname||Remove symbol symbolname from the source file. This option may be given more than once, and may be combined with other strip options, except -K.|
|-o file||Put the stripped output in file, rather than replacing the existing file. When this argument is used, only one objfile argument may be specified.|
|-p, --preserve-dates||Preserve the access and modification dates of the file.|
|-D, --enable-deterministic-archives||Operate in deterministic mode. When copying archive members and writing the archive index, use zero for UIDs, GIDs, timestamps, and use consistent file modes for all files.|
|-w, --wildcard||Permit regular expressions in symbolnames used in other command line options. The question mark (?), asterisk (*), backslash (\) and square brackets () operators can be used anywhere in the symbol name. If the first character of the symbol name is the exclamation point (!) then the sense of the switch is reversed for that symbol. For example:
-w -K !foo -K fo*
would cause strip to only keep symbols that start with the letters "fo", but to discard the symbol "foo".
|-x, --discard-all||Remove non-global symbols.|
|-X, --discard-locals||Remove compiler-generated local symbols. (These usually start with `L' or `.'.)|
|--keep-file-symbols||When stripping a file, perhaps with --strip-debug or --strip-unneeded, retain any symbols specifying source file names, which would otherwise get stripped.|
|--only-keep-debug||Strip a file, removing contents of any sections that would not be stripped by --strip-debug and leaving the debugging sections intact. In ELF files, this preserves all note sections in the output.
The intention is that this option will be used in conjunction with --add-gnu-debuglink to create a two part executable. One a stripped binary which will occupy less space in RAM and in a distribution and the second a debugging information file that is only needed if debugging abilities are required. The suggested procedure to create these files is as follows:
Note—this switch is only intended for use on fully linked files. It does not make sense to use it on object files where the debugging information may be incomplete. The gnu_debuglink feature currently only supports the presence of one file name containing debugging information, not multiple file names on a one-per-object-file basis.
|-V, --version||Show the version number for strip.|
|-v, --verbose||Verbose output: list all object files modified. In the case of archives, `strip -v' lists all members of the archive.|
strip -s a.out
The above example would strip the symbol table from the executable file a.out.