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ar
on the command line
ar [`-X32_64'] [`-']p[mod [relpos] [count]] archive [member...] |
When you use ar
in the Unix style, ar
insists on at least two
arguments to execute: one keyletter specifying the operation
(optionally accompanied by other keyletters specifying
modifiers), and the archive name to act on.
Most operations can also accept further member arguments, specifying particular files to operate on.
GNU ar
allows you to mix the operation code p and modifier
flags mod in any order, within the first command-line argument.
If you wish, you may begin the first command-line argument with a dash.
The p keyletter specifies what operation to execute; it may be any of the following, but you must specify only one of them:
If you specify the `v' modifier, ar
lists each module
as it is deleted.
The ordering of members in an archive can make a difference in how programs are linked using the library, if a symbol is defined in more than one member.
If no modifiers are used with m
, any members you name in the
member arguments are moved to the end of the archive;
you can use the `a', `b', or `i' modifiers to move them to a
specified place instead.
If you specify no member arguments, all the files in the archive are printed.
The modifiers `a', `b', and `i' do not affect this operation; new members are always placed at the end of the archive.
The modifier `v' makes ar
list each file as it is appended.
Since the point of this operation is speed, the archive's symbol table
index is not updated, even if it already existed; you can use `ar s' or
ranlib
explicitly to update the symbol table index.
However, too many different systems assume quick append rebuilds the
index, so GNU ar implements q
as a synonym for r
.
If one of the files named in member... does not exist, ar
displays an error message, and leaves undisturbed any existing members
of the archive matching that name.
By default, new members are added at the end of the file; but you may use one of the modifiers `a', `b', or `i' to request placement relative to some existing member.
The modifier `v' used with this operation elicits a line of output for each file inserted, along with one of the letters `a' or `r' to indicate whether the file was appended (no old member deleted) or replaced.
If you do not specify a member, all files in the archive are listed.
If there is more than one file with the same name (say, `fie') in an archive (say `b.a'), `ar t b.a fie' lists only the first instance; to see them all, you must ask for a complete listing--in our example, `ar t b.a'.
ar
list each name as it extracts it.
If you do not specify a member, all files in the archive are extracted.
A number of modifiers (mod) may immediately follow the p keyletter, to specify variations on an operation's behavior:
ar
will normally permit file
names of any length. This will cause it to create archives which are
not compatible with the native ar
program on some systems. If
this is a concern, the `f' modifier may be used to truncate file
names when putting them in the archive.
ar
can not create an archive with a full path name (such archives
are not POSIX complaint), but other archive creators can. This option
will cause GNU ar
to match file names using a complete path
name, which can be convenient when extracting a single file from an
archive created by another tool.
ar
.
ar
ignores an initial option spelt `-X32_64', for
compatibility with AIX. The behaviour produced by this option is the
default for GNU ar
. ar
does not support any of the other
`-X' options; in particular, it does not support `-X32'
which is the default for AIX ar
.
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