Red Hat ENTERPRISE LINUX 4 - USING BINUTILS Uživatelský manuál stáhnout pdf (Strana 11)

Chapter 2. ar 5

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.

Extract members (named member) from the archive. You can use the v modiﬁer with this opera-

tion, to request that 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:

Add new ﬁles after an existing member of the archive. If you use the modiﬁer a, the name

of an existing archive member must be present as the relpos argument, before the archive

speciﬁcation.

Add new ﬁles before an existing member of the archive. If you use the modiﬁer b, the name

of an existing archive member must be present as the relpos argument, before the archive

speciﬁcation. (same as i).

Create the archive. The speciﬁed archive is always created if it did not exist, when you request

an update. But a warning is issued unless you specify in advance that you expect to create it, by

using this modiﬁer.

Truncate names in the archive. gnu 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.

Insert new ﬁles before an existing member of the archive. If you use the modiﬁer i, the name

of an existing archive member must be present as the relpos argument, before the archive

speciﬁcation. (same as b).

This modiﬁer is accepted but not used.

Uses the count parameter. This is used if there are multiple entries in the archive with the same

name. Extract or delete instance count of the given name from the archive.

Preserve the original dates of members when extracting them. If you do not specify this modiﬁer,

ﬁles extracted from the archive are stamped with the time of extraction.

Use the full path name when matching names in the archive. gnu ar can not create an archive

with a full path name (such archives are not POSIX complaint), but other archive creators can.

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Red Hat ENTERPRISE LINUX 4 - USING BINUTILS Uživatelský manuál Strana 11