strip 命令
用途
通过除去绑定程序和符号调试程序使用的信息，减少扩展公共对象文件格式（XCOFF）的对象文件的大小。
语法
strip [ -V] [ -r [ -l ] | -x [ -l ] | -t | -H | -e | -E ] [ -X {32|64|32_64}] [ -- ] File ...
描述
strip 命令减少 XCOFF 对象文件的大小。strip 命令从 XCOFF 对象文件中有选择地除去行号信息、重定位信息、调试段、typchk 段、注释段、文件头以及所有或部分符号表。一旦您使用该命令，则很难调试文件的符号；因此，通常应该只在已经调试和测试过的生成模块上使用 strip 命令。使用 strip 命令减少对象文件所需的存储量开销。
对于每个对象模块，strip 命令除去给出的选项所指定的信息。对于每个归档文件，strip 命令从归档中除去全局符号表。
可以使用 ar -s 命令将除去的符号表恢复到归档文件或库文件中。
没有选项的 strip 命令除去行号信息、重定位信息、符号表、调试段、typchk 段和注释段。
标志
| -e | 在对象文件的可选头中设置 F_LOADONLY 标志。如果对象文件放置在归档中，则该标志告知绑定程序（ld 命令），在与此归档链接时应忽略该对象文件中的符号。 |
| -E | 复位（关闭）对象文件的可选头中的 F_LOADONLY 位。（请参阅 -e 标志。） |
| -H | 除去对象文件头、任何可选的头以及所有段的头部分。
注：不除去符号表信息。 |
| -l | （小写 L）从对象文件中除去行号信息。 |
退出状态
该命令返回以下退出值：
| 0 | 成功完成。 |
| >0 | 出错。 |
示例
- 要除去 a.out 文件中的符号表和行号信息，请输入：
strip a.out
- 要除去 a.out 文件中的对象文件头，请输入：
strip -H a.out
- 要除去 lib.a 中的 32 位和 64 位符号表，请输入：
strip -X 32_64 lib.a
文件
| /usr/ccs/bin/strip | 包含 strip 命令。 |
///
$ man strip
STRIP(1) GNU Development Tools STRIP(1)
NAME
strip - Discard symbols from object files.
SYNOPSIS
strip [-F bfdname |--target=bfdname]
[-I bfdname |--input-target=bfdname]
[-O bfdname |--output-target=bfdname]
[-s|--strip-all]
[-S|-g|-d|--strip-debug]
[-K symbolname |--keep-symbol=symbolname]
[-N symbolname |--strip-symbol=symbolname]
[-w|--wildcard]
[-x|--discard-all] [-X |--discard-locals]
[-R sectionname |--remove-section=sectionname]
[-o file] [-p|--preserve-dates]
[--keep-file-symbols]
[--only-keep-debug]
[-v |--verbose] [-V|--version]
[--help] [--info]
objfile...
DESCRIPTION
GNU strip discards all symbols from object files objfile. The list of object files may include archives.
At least one object file must be given.
strip modifies the files named in its argument, rather than writing modified copies under different
names.
OPTIONS
-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-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 strip options other than -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.
-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 which is only needed if debugging abilities are required.
The suggested procedure to create these files is as follows:
1.<Link the executable as normal. Assuming that is is called>
"foo" then...
1.<Run "objcopy --only-keep-debug foo foo.dbg" to>
create a file containing the debugging info.
1.<Run "objcopy --strip-debug foo" to create a>
stripped executable.
1.<Run "objcopy --add-gnu-debuglink=foo.dbg foo">
to add a link to the debugging info into the stripped executable.
Note---the choice of ".dbg" as an extension for the debug info file is arbitrary. Also the
"--only-keep-debug" step is optional. You could instead do this:
1.<Link the executable as normal.>
1.<Copy "foo" to "foo.full">
1.<Run "strip --strip-debug foo">
1.<Run "objcopy --add-gnu-debuglink=foo.full foo">
i.e., the file pointed to by the --add-gnu-debuglink can be the full executable. It does not have to
be a file created by the --only-keep-debug switch.
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. Besides the gnu_debuglink feature
currently only supports the presence of one filename containing debugging information, not multiple
filenames 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.
@file
Read command-line options from file. The options read are inserted in place of the original @file
option. If file does not exist, or cannot be read, then the option will be treated literally, and
not removed.
Options in file are separated by whitespace. A whitespace character may be included in an option by
surrounding the entire option in either single or double quotes. Any character (including a
backslash) may be included by prefixing the character to be included with a backslash. The file may
itself contain additional @file options; any such options will be processed recursively.
SEE ALSO
the Info entries for binutils.
COPYRIGHT
Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free
Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with
no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is
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