Linux in a Nutshell, Fifth Edition

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Chapter 3: Linux Commands

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

Options

- Return all options to defaults.

-signal

Send signal instead of SIGKILL.

-a Display information on all specified files, even if they are not

being accessed by any processes.

-i Request user confirmation to kill a process. Ignored if -k is not

also specified.

-k Send SIGKILL signal to each process.

-l List signal names.

-m Expect files to exist on a mounted filesystem; include all files

accessing that filesystem.

-n space

Set the namespace checked for usage. Acceptable values are

file for files, udp for local UPD ports, and tcp for local TCP

ports.

-s Silent.

-u User login name, in parentheses, also follows process ID.

-v Verbose.

-V Display version information.

g++

g++ [options] files

Invoke gcc with the options necessary to make it recognize C++.

g++ recognizes all the file extensions gcc does, in addition to C++

source files (.C, .cc,or.cxx files) and C++ preprocessed files (.ii

files). See also gcc.

gawk

gawk [options] 'script' [var=value...] [files]

gawk [options] -f scriptfile [var=value...] [files]

The GNU version of awk, a program that does pattern matching,

record processing, and other forms of text manipulation. For more

information, see Chapter 11.

gcc

gcc [options] files

GNU Compiler Collection. gcc, formerly known as the GNU C

Compiler, compiles multiple ...