Linux in a Nutshell, Fifth Edition

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Chapter 3: Linux Commands

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-p, --preserve-timestamps

Preserve access and modification times on source files and

directories.

-s, --strip

Strip symbol tables.

-v, --verbose

Print name of each directory as it is created.

--version

Print version, then exit.

-C Do not overwrite file when the target exists and is identical to

the new file. Preserve original timestamp.

-D Create leading components of destination except the last, then

copy source to destination.

-S suffix, --suffix=suffix

Use suffix instead of the default backup suffix, usually ~.

ipcrm

ipcrm [options]

System administration command. Remove interprocess communi-

cation (IPC) message queues, shared memory segments, or

semaphore arrays. These may be specified either by numeric identi-

fier or by key, using the following options.

Options

-m identifier, -M key

Remove specified shared memory segment and its associated

data structures after the last detach is performed.

-q identifier, -Q key

Remove specified message queue and its associated data

structures.

-s identifier, -S key

Remove specified semaphore array and its associated data

structures.

ipcs

ipcs [options]

System administration command. Print report on interprocess

communication (IPC) message queues, shared memory segments,

and semaphore arrays for which the current process has read

access. ...