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usage examples
Raw
awk
termie@champs-3:/usr/local/bin % awk --help [master] 15:07:57
Usage: awk [POSIX or GNU style options] -f progfile [--] file ...
Usage: awk [POSIX or GNU style options] [--] 'program' file ...
POSIX options: GNU long options: (standard)
-f progfile --file=progfile
-F fs --field-separator=fs
-v var=val --assign=var=val
Short options: GNU long options: (extensions)
-b --characters-as-bytes
-c --traditional
-C --copyright
-d[file] --dump-variables[=file]
-D[file] --debug[=file]
-e 'program-text' --source='program-text'
-E file --exec=file
-g --gen-pot
-h --help
-i includefile --include=includefile
-l library --load=library
-L [fatal] --lint[=fatal]
-n --non-decimal-data
-M --bignum
-N --use-lc-numeric
-o[file] --pretty-print[=file]
-O --optimize
-p[file] --profile[=file]
-P --posix
-r --re-interval
-S --sandbox
-t --lint-old
-V --version
To report bugs, see node `Bugs' in `gawk.info', which is
section `Reporting Problems and Bugs' in the printed version.
gawk is a pattern scanning and processing language.
By default it reads standard input and writes standard output.
Examples:
gawk '{ sum += $1 }; END { print sum }' file
gawk -F: '{ print $1 }' /etc/passwd
Raw
aws
WS() AWS()
NAME
aws -
DESCRIPTION
The AWS Command Line Interface is a unified tool to manage your AWS
services.
SYNOPSIS
aws [options] <command> <subcommand> [parameters]
Use aws command help for information on a specific command.
OPTIONS
--debug (boolean)
Turn on debug logging.
--endpoint-url (string)
Override command's default URL with the given URL.
--no-verify-ssl (boolean)
By default, the AWS CLI uses SSL when communicating with AWS services.
For each SSL connection, the AWS CLI will verify SSL certificates. This
option overrides the default behavior of verifying SSL certificates.
--no-paginate (boolean)
Disable automatic pagination.
--output (string)
The formatting style for command output.
o json
o text
o table
--query (string)
A JMESPath query to use in filtering the response data.
Raw
bundle
BUNDLE(1) BUNDLE(1)
NAME
bundle - Ruby Dependency Management
SYNOPSIS
bundle COMMAND [--no-color] [--verbose] [ARGS]
DESCRIPTION
Bundler manages an application's dependencies through its entire life across many machines systematically and
repeatably.
See the bundler website http://bundler.io for information on getting started, and Gemfile(5) for more informa-
tion on the Gemfile format.
OPTIONS
--no-color
Prints all output without color
--verbose
Prints out additional logging information
BUNDLE COMMANDS
We divide bundle subcommands into primary commands and utilities.
PRIMARY COMMANDS
bundle install(1) bundle-install.1.html
Install the gems specified by the Gemfile or Gemfile.lock
bundle update(1) bundle-update.1.html
Update dependencies to their latest versions
bundle package(1) bundle-package.1.html
Package the .gem files required by your application into the vendor/cache directory
bundle exec(1) bundle-exec.1.html
Execute a script in the context of the current bundle
bundle config(1) bundle-config.1.html
Specify and read configuration options for bundler
bundle help(1)
Displays detailed help for each subcommand
UTILITIES
bundle check(1)
Determine whether the requirements for your application are installed and available to bundler
Raw
go
termie@champs-3:~/Desktop % go --help 11:07:55
Go is a tool for managing Go source code.
Usage:
go command [arguments]
The commands are:
build compile packages and dependencies
clean remove object files
env print Go environment information
fix run go tool fix on packages
fmt run gofmt on package sources
generate generate Go files by processing source
get download and install packages and dependencies
install compile and install packages and dependencies
list list packages
run compile and run Go program
test test packages
tool run specified go tool
version print Go version
vet run go tool vet on packages
Use "go help [command]" for more information about a command.
Additional help topics:
c calling between Go and C
filetype file types
gopath GOPATH environment variable
importpath import path syntax
packages description of package lists
testflag description of testing flags
testfunc description of testing functions
Use "go help [topic]" for more information about that topic.
Raw
java
termie@champs-3:~/Desktop % java -help 11:07:50
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-d32 use a 32-bit data model if available
-d64 use a 64-bit data model if available (implies -server, only for x86_64)
-client to select the "client" VM
-server to select the "server" VM
-jvm is a synonym for the "client" VM [deprecated]
-hotspot is a synonym for the "client" VM [deprecated]
The default VM is client.
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A : separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -jre-no-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
-splash:<imagepath>
show splash screen with specified image
Raw
lolcat
termie@champs-3:~/Desktop % lolcat --help 11:15:39
Usage: lolcat [<options>] [file ...]
Options:
-h, --help show this help message and exit
-p SPREAD, --spread=SPREAD
Rainbow spread
-F FREQ, --freq=FREQ Rainbow frequency
-S SEED, --seed=SEED Rainbow seed
-a, --animate Enable psychedelics
-d DURATION, --duration=DURATION
Animation duration
-s SPEED, --speed=SPEED
Animation speed
-f, --force Force colour even when stdout is not a tty
-3 Force 3 bit colour mode
-4 Force 4 bit colour mode
-8 Force 8 bit colour mode
Raw
mongo
termie@champs-3:~/Desktop % mongo --help 11:13:42
MongoDB shell version: 2.6.5
usage: mongo [options] [db address] [file names (ending in .js)]
db address can be:
foo foo database on local machine
192.169.0.5/foo foo database on 192.168.0.5 machine
192.169.0.5:9999/foo foo database on 192.168.0.5 machine on port 9999
Options:
--shell run the shell after executing files
--nodb don't connect to mongod on startup - no
'db address' arg expected
--norc will not run the ".mongorc.js" file on
start up
--quiet be less chatty
--port arg port to connect to
--host arg server to connect to
--eval arg evaluate javascript
-h [ --help ] show this usage information
--version show version information
--verbose increase verbosity
--ipv6 enable IPv6 support (disabled by
default)
Authentication Options:
-u [ --username ] arg username for authentication
-p [ --password ] arg password for authentication
--authenticationDatabase arg user source (defaults to dbname)
--authenticationMechanism arg (=MONGODB-CR)
authentication mechanism
--gssapiServiceName arg (=mongodb) Service name to use when authenticating
using GSSAPI/Kerberos
--gssapiHostName arg Remote host name to use for purpose of
GSSAPI/Kerberos authentication
file names: a list of files to run. files have to end in .js and will exit after unless --shell is specified
Raw
mysqladmin
termie@champs-3:/usr/local/bin % mysqladmin --help [master] 15:08:45
mysqladmin Ver 8.42 Distrib 5.6.21, for osx10.10 on x86_64
Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Administration program for the mysqld daemon.
Usage: mysqladmin [OPTIONS] command command....
--bind-address=name IP address to bind to.
-c, --count=# Number of iterations to make. This works with -i
(--sleep) only.
--debug-check Check memory and open file usage at exit.
--debug-info Print some debug info at exit.
-f, --force Don't ask for confirmation on drop database; with
multiple commands, continue even if an error occurs.
-C, --compress Use compression in server/client protocol.
--character-sets-dir=name
Directory for character set files.
--default-character-set=name
Set the default character set.
-?, --help Display this help and exit.
-h, --host=name Connect to host.
-b, --no-beep Turn off beep on error.
-p, --password[=name]
Password to use when connecting to server. If password is
not given it's asked from the tty.
-P, --port=# Port number to use for connection or 0 for default to, in
order of preference, my.cnf, $MYSQL_TCP_PORT,
/etc/services, built-in default (3306).
--protocol=name The protocol to use for connection (tcp, socket, pipe,
memory).
-r, --relative Show difference between current and previous values when
used with -i. Currently only works with extended-status.
--secure-auth Refuse client connecting to server if it uses old
(pre-4.1.1) protocol.
(Defaults to on; use --skip-secure-auth to disable.)
-s, --silent Silently exit if one can't connect to server.
-S, --socket=name The socket file to use for connection.
-i, --sleep=# Execute commands repeatedly with a sleep between.
--ssl Enable SSL for connection (automatically enabled with
other flags).
--ssl-ca=name CA file in PEM format (check OpenSSL docs, implies
--ssl).
--ssl-capath=name CA directory (check OpenSSL docs, implies --ssl).
--ssl-cert=name X509 cert in PEM format (implies --ssl).
--ssl-cipher=name SSL cipher to use (implies --ssl).
--ssl-key=name X509 key in PEM format (implies --ssl).
--ssl-crl=name Certificate revocation list (implies --ssl).
--ssl-crlpath=name Certificate revocation list path (implies --ssl).
--ssl-verify-server-cert
Verify server's "Common Name" in its cert against
hostname used when connecting. This option is disabled by
default.
-u, --user=name User for login if not current user.
-v, --verbose Write more information.
-V, --version Output version information and exit.
-E, --vertical Print output vertically. Is similar to --relative, but
prints output vertically.
-w, --wait[=#] Wait and retry if connection is down.
--connect-timeout=#
--shutdown-timeout=#
--plugin-dir=name Directory for client-side plugins.
--default-auth=name Default authentication client-side plugin to use.
--enable-cleartext-plugin
Enable/disable the clear text authentication plugin.
Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
bind-address (No default value)
count 0
debug-check FALSE
debug-info FALSE
force FALSE
compress FALSE
character-sets-dir (No default value)
default-character-set auto
host (No default value)
no-beep FALSE
port 0
relative FALSE
secure-auth TRUE
socket (No default value)
sleep 0
ssl FALSE
ssl-ca (No default value)
ssl-capath (No default value)
ssl-cert (No default value)
ssl-cipher (No default value)
ssl-key (No default value)
ssl-crl (No default value)
ssl-crlpath (No default value)
ssl-verify-server-cert FALSE
user (No default value)
verbose FALSE
vertical FALSE
connect-timeout 43200
shutdown-timeout 3600
plugin-dir (No default value)
default-auth (No default value)
enable-cleartext-plugin FALSE
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/etc/my.cnf ~/.my.cnf
The following groups are read: mysqladmin client
The following options may be given as the first argument:
--print-defaults Print the program argument list and exit.
--no-defaults Don't read default options from any option file,
except for login file.
--defaults-file=# Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
--defaults-group-suffix=#
Also read groups with concat(group, suffix)
--login-path=# Read this path from the login file.
Where command is a one or more of: (Commands may be shortened)
create databasename Create a new database
debug Instruct server to write debug information to log
drop databasename Delete a database and all its tables
extended-status Gives an extended status message from the server
flush-hosts Flush all cached hosts
flush-logs Flush all logs
flush-status Clear status variables
flush-tables Flush all tables
flush-threads Flush the thread cache
flush-privileges Reload grant tables (same as reload)
kill id,id,... Kill mysql threads
password [new-password] Change old password to new-password in current format
old-password [new-password] Change old password to new-password in old format
ping Check if mysqld is alive
processlist Show list of active threads in server
reload Reload grant tables
refresh Flush all tables and close and open logfiles
shutdown Take server down
status Gives a short status message from the server
start-slave Start slave
stop-slave Stop slave
variables Prints variables available
version Get version info from server
Raw
pip
termie@champs-3:/usr/local/bin % pip --help [master] 15:08:27
Usage:
pip <command> [options]
Commands:
install Install packages.
uninstall Uninstall packages.
freeze Output installed packages in requirements format.
list List installed packages.
show Show information about installed packages.
search Search PyPI for packages.
wheel Build wheels from your requirements.
zip DEPRECATED. Zip individual packages.
unzip DEPRECATED. Unzip individual packages.
bundle DEPRECATED. Create pybundles.
help Show help for commands.
General Options:
-h, --help Show help.
-v, --verbose Give more output. Option is additive, and can be used up to 3 times.
-V, --version Show version and exit.
-q, --quiet Give less output.
--log-file <path> Path to a verbose non-appending log, that only logs failures. This log is active
by default at /Users/termie/Library/Logs/pip.log.
--log <path> Path to a verbose appending log. This log is inactive by default.
--proxy <proxy> Specify a proxy in the form [user:passwd@]proxy.server:port.
--timeout <sec> Set the socket timeout (default 15 seconds).
--exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup.
--cert <path> Path to alternate CA bundle.
Raw
python
termie@champs-3:~/Desktop % python --help 11:06:21
usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ...
Options and arguments (and corresponding environment variables):
-B : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x
-c cmd : program passed in as string (terminates option list)
-d : debug output from parser; also PYTHONDEBUG=x
-E : ignore PYTHON* environment variables (such as PYTHONPATH)
-h : print this help message and exit (also --help)
-i : inspect interactively after running script; forces a prompt even
if stdin does not appear to be a terminal; also PYTHONINSPECT=x
-m mod : run library module as a script (terminates option list)
-O : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x
-OO : remove doc-strings in addition to the -O optimizations
-R : use a pseudo-random salt to make hash() values of various types be
unpredictable between separate invocations of the interpreter, as
a defense against denial-of-service attacks
-Q arg : division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew
-s : don't add user site directory to sys.path; also PYTHONNOUSERSITE
-S : don't imply 'import site' on initialization
-t : issue warnings about inconsistent tab usage (-tt: issue errors)
-u : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x
see man page for details on internal buffering relating to '-u'
-v : verbose (trace import statements); also PYTHONVERBOSE=x
can be supplied multiple times to increase verbosity
-V : print the Python version number and exit (also --version)
-W arg : warning control; arg is action:message:category:module:lineno
also PYTHONWARNINGS=arg
-x : skip first line of source, allowing use of non-Unix forms of #!cmd
-3 : warn about Python 3.x incompatibilities that 2to3 cannot trivially fix
file : program read from script file
- : program read from stdin (default; interactive mode if a tty)
arg ...: arguments passed to program in sys.argv[1:]
Other environment variables:
PYTHONSTARTUP: file executed on interactive startup (no default)
PYTHONPATH : ':'-separated list of directories prefixed to the
default module search path. The result is sys.path.
PYTHONHOME : alternate <prefix> directory (or <prefix>:<exec_prefix>).
The default module search path uses <prefix>/pythonX.X.
PYTHONCASEOK : ignore case in 'import' statements (Windows).
PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.
PYTHONHASHSEED: if this variable is set to 'random', the effect is the same
as specifying the -R option: a random value is used to seed the hashes of
str, bytes and datetime objects. It can also be set to an integer
in the range [0,4294967295] to get hash values with a predictable seed.
Raw
ruby
termie@champs-3:~/Desktop % ruby --help 11:07:27
Usage: ruby [switches] [--] [programfile] [arguments]
-0[octal] specify record separator (\0, if no argument)
-a autosplit mode with -n or -p (splits $_ into $F)
-c check syntax only
-Cdirectory cd to directory before executing your script
-d, --debug set debugging flags (set $DEBUG to true)
-e 'command' one line of script. Several -e's allowed. Omit [programfile]
-Eex[:in], --encoding=ex[:in]
specify the default external and internal character encodings
-Fpattern split() pattern for autosplit (-a)
-i[extension] edit ARGV files in place (make backup if extension supplied)
-Idirectory specify $LOAD_PATH directory (may be used more than once)
-l enable line ending processing
-n assume 'while gets(); ... end' loop around your script
-p assume loop like -n but print line also like sed
-rlibrary require the library before executing your script
-s enable some switch parsing for switches after script name
-S look for the script using PATH environment variable
-T[level=1] turn on tainting checks
-v, --verbose print version number, then turn on verbose mode
-w turn warnings on for your script
-W[level=2] set warning level; 0=silence, 1=medium, 2=verbose
-x[directory] strip off text before #!ruby line and perhaps cd to directory
--copyright print the copyright
--enable=feature[,...], --disable=feature[,...]
enable or disable features
--external-encoding=encoding, --internal-encoding=encoding
specify the default external or internal character encoding
--version print the version
--help show this message, -h for short message
Features:
gems rubygems (default: enabled)
rubyopt RUBYOPT environment variable (default: enabled)
Raw
sass
termie@champs-3:/usr/local/bin % sass --help [master] 15:09:47
/usr/local/Cellar/ruby/2.2.2/lib/ruby/2.2.0/rubygems/dependency.rb:315:in `to_specs': Could not find 'sass' (>= 0) among 9 total gem(s) (Gem::LoadError)
Checked in 'GEM_PATH=/Users/termie/.gem/ruby/2.2.0:/usr/local/lib/ruby/gems/2.2.0:/usr/local/Cellar/ruby/2.2.2/lib/ruby/gems/2.2.0', execute `gem env` for more information
from /usr/local/Cellar/ruby/2.2.2/lib/ruby/2.2.0/rubygems/dependency.rb:324:in `to_spec'
from /usr/local/Cellar/ruby/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_gem.rb:64:in `gem'
from /usr/local/bin/sass:22:in `<main>'
Raw
svn
termie@champs-3:~/Desktop % svn --help 11:13:53
usage: svn <subcommand> [options] [args]
Subversion command-line client, version 1.8.10.
Type 'svn help <subcommand>' for help on a specific subcommand.
Type 'svn --version' to see the program version and RA modules
or 'svn --version --quiet' to see just the version number.
Most subcommands take file and/or directory arguments, recursing
on the directories. If no arguments are supplied to such a
command, it recurses on the current directory (inclusive) by default.
Available subcommands:
add
blame (praise, annotate, ann)
cat
changelist (cl)
checkout (co)
cleanup
commit (ci)
copy (cp)
delete (del, remove, rm)
diff (di)
export
help (?, h)
import
info
list (ls)
lock
log
merge
mergeinfo
mkdir
move (mv, rename, ren)
patch
propdel (pdel, pd)
propedit (pedit, pe)
propget (pget, pg)
proplist (plist, pl)
propset (pset, ps)
relocate
resolve
resolved
revert
status (stat, st)
switch (sw)
unlock
update (up)
upgrade
Subversion is a tool for version control.
For additional information, see http://subversion.apache.org/
Raw
virtualenv
termie@champs-3:/usr/local/bin % virtualenv --help [master] 15:08:21
Usage: virtualenv [OPTIONS] DEST_DIR
Options:
--version show program's version number and exit
-h, --help show this help message and exit
-v, --verbose Increase verbosity.
-q, --quiet Decrease verbosity.
-p PYTHON_EXE, --python=PYTHON_EXE
The Python interpreter to use, e.g.,
--python=python2.5 will use the python2.5 interpreter
to create the new environment. The default is the
interpreter that virtualenv was installed with
(/usr/bin/python)
--clear Clear out the non-root install and start from scratch.
--no-site-packages DEPRECATED. Retained only for backward compatibility.
Not having access to global site-packages is now the
default behavior.
--system-site-packages
Give the virtual environment access to the global
site-packages.
--always-copy Always copy files rather than symlinking.
--unzip-setuptools Unzip Setuptools when installing it.
--relocatable Make an EXISTING virtualenv environment relocatable.
This fixes up scripts and makes all .pth files
relative.
--no-setuptools Do not install setuptools (or pip) in the new
virtualenv.
--no-pip Do not install pip in the new virtualenv.
--extra-search-dir=DIR
Directory to look for setuptools/pip distributions in.
This option can be used multiple times.
--never-download DEPRECATED. Retained only for backward compatibility.
This option has no effect. Virtualenv never downloads
pip or setuptools.
--prompt=PROMPT Provides an alternative prompt prefix for this
environment.
--setuptools DEPRECATED. Retained only for backward compatibility.
This option has no effect.
--distribute DEPRECATED. Retained only for backward compatibility.
This option has no effect.
Raw
wireshark
termie@champs-3:/usr/local/bin % wireshark --help [master] 15:07:50
Wireshark 1.99.1 (v1.99.1-0-g4c229ca from master)
Interactively dump and analyze network traffic.
See http://www.wireshark.org for more information.
Usage: wireshark [options] ... [ <infile> ]
Capture interface:
-i <interface> name or idx of interface (def: first non-loopback)
-f <capture filter> packet filter in libpcap filter syntax
-s <snaplen> packet snapshot length (def: 65535)
-p don't capture in promiscuous mode
-k start capturing immediately (def: do nothing)
-S update packet display when new packets are captured
-l turn on automatic scrolling while -S is in use
-I capture in monitor mode, if available
-B <buffer size> size of kernel buffer (def: 2MB)
-y <link type> link layer type (def: first appropriate)
-D print list of interfaces and exit
-L print list of link-layer types of iface and exit
Capture stop conditions:
-c <packet count> stop after n packets (def: infinite)
-a <autostop cond.> ... duration:NUM - stop after NUM seconds
filesize:NUM - stop this file after NUM KB
files:NUM - stop after NUM files
Capture output:
-b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs
filesize:NUM - switch to next file after NUM KB
files:NUM - ringbuffer: replace after NUM files
Input file:
-r <infile> set the filename to read from (no pipes or stdin!)
Processing:
-R <read filter> packet filter in Wireshark display filter syntax
-n disable all name resolutions (def: all enabled)
-N <name resolve flags> enable specific name resolution(s): "mntC"
User interface:
-C <config profile> start with specified configuration profile
-Y <display filter> start with the given display filter
-g <packet number> go to specified packet number after "-r"
-J <jump filter> jump to the first packet matching the (display)
filter
-j search backwards for a matching packet after "-J"
-m <font> set the font name used for most text
-t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)
-u s|hms output format of seconds (def: s: seconds)
-X <key>:<value> eXtension options, see man page for details
-z <statistics> show various statistics, see man page for details
Output:
-w <outfile|-> set the output filename (or '-' for stdout)
Miscellaneous:
-h display this help and exit
-v display version info and exit
-P <key>:<path> persconf:path - personal configuration files
persdata:path - personal data files
-o <name>:<value> ... override preference or recent setting
-K <keytab> keytab file to use for kerberos decryption
--display=DISPLAY X display to use
NOTE: Not all options are implemented in the Qt port.
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