or – conditionally execute a command SynopsisCOMMAND1; or COMMAND2 DescriptionThe or builtin is used to execute a command if the current exit status (as set by the last previous command) is not 0. The or command does not change the current exit status. The exit status of the last foreground command to exit can always…
opusinfo – gives information about Opus files and does extensive validity checking Synopsisopusinfo [ -q | -v ] [ -h ] [ -V ] file1.opus … fileN.opus Descriptionopusinfo reads one or more Opus files and prints information about stream contents (including chained and/or multiplexed streams) to standard output. It will detect (but not correct) a…
opusenc – encode audio into the Opus format Synopsisopusenc [ -h ] [ -V ] [ –bitrate kbit/sec ] [ –vbr ] [ –cvbr ] [ –hard-cbr ] [ –comp complexity ] [ –framesize 2.5, 5, 10, 20, 40, 60 ] [ –expect-loss pct ] [ –downmix-mono ] [ –downmix-stereo ] [ –max-delay ms ]…
opusdec – decode audio from Opus format to WAV (or simple audio output) Synopsisopusdec [ -hV ] [ –rate Hz ] [ –gain dB ] [ –no-dither ] [ –force-wav ] [ –packet-loss pct ] [ –save-range file ] input.opus [ output.wav ] Descriptionopusdec decodes Opus files into PCM Wave (uncompressed) files. If the input…
OptiPNG – Optimize Portable Network Graphics files Synopsisoptipng [-? | -h | -help] optipng [options…] files… DescriptionThe OptiPNG program shall attempt to optimize PNG files, i.e. reduce their size to a minimum, without losing semantic information. In addition, this program shall perform a suite of auxiliary functions like integrity checks, metadata recovery and pixmap-to-PNG conversion….
optex – OPmac and Plain TeX for LuaTeX engine. Synopsisoptex [ first line ] DescriptionThis manual page was derived from the manual page for LaTeX and is not meant to be exhaustive. The complete documentation for this version of TeX can be found in the info file or manual Web2C: A TeX implementation. OpTeX is…
opt – LLVM optimizer Synopsisopt [options] [filename] DescriptionThe opt command is the modular LLVM optimizer and analyzer. It takes LLVM source files as input, runs the specified optimizations or analyses on it, and then outputs the optimized file or the analysis results. The function of opt depends on whether the -analyze option is given. When…
opt – LLVM optimizer Synopsisopt [options] [filename] DescriptionThe opt command is the modular LLVM optimizer and analyzer. It takes LLVM source files as input, runs the specified optimizations or analyses on it, and then outputs the optimized file or the analysis results. The function of opt depends on whether the -analyze option is given. When…
oprofile – a system-wide profiler Synopsisopcontrol [ options ] opreport [ options ] [ profile specification ] opannotate [ options ] [ profile specification ] oparchive [ options ] [ profile specification ] opgprof [ options ] [ profile specification ] DescriptionOProfile is a profiling system for systems running Linux 2.6 and greater. Profiling runs…
oprof_start – A GUI interface for OProfile Synopsisoprof_start [ options ] DescriptionThe oprof_start application provides a GUI interface to control the operation of OProfile. Running oprof_start requires root privileges and does not support operf due to oprof_start using the older opcontrol script. EnvironmentNo special environment variables are recognised by oprof_start. Files/root/.oprofile/daemonrc Configuration file for opcontrol…
opreport – produce symbol or binary image summaries Synopsisopreport [ options ] [profile specification] Descriptionopreport outputs binary image summaries, or per-symbol data, from OProfile profiling sessions. See oprofile(1) for how to write profile specifications. Options–accumulated / -a Accumulate sample and percentage counts in the symbol list. –debug-info / -g Show source file and line for…
opl2ofm – convert Omega and TeX property-list files to font-metric files Synopsisopl2ofm [OPTIONS] OPLFILE[.opl] [OFMFILE[.ofm]] Descriptionopl2ofm translates a property-list format file, OPLFILE, into the binary Omega Font Metric format. The program writes to standard output (by default) or to a file specified as OFMFILE. The program also works with TeX PL files, producing TeX TFM…
opimport – converts sample database files Synopsisopimport [ options ] input_file Descriptionopimport converts sample database files from a foreign binary format (abi) to the native format. Options–abi / -a Input abi file description location. –force / -f Force conversion even if the input and output abi are identical. –output / -o filename Specify the output…
ophelp – list OProfile events Synopsisophelp [ options ] [event name] DescriptionBy default, ophelp lists the available performance counter options. If you give it a symbolic event name, it will return the hardware value (e.g. "ophelp DATA_MEM_REFS"). Options–cpu-type / -c Show the events for the given numerical CPU type. –get-cpu-type / -r Show the symbolic…
opgprof – produce gprof-format profile data Synopsisopgprof [ options ] [profile specification] Descriptionopgprof outputs gprof-format profile data for a given binary image, from an OProfile session. See oprofile(1) for how to write profile specifications. Options–help / -? / –usage Show help message. –version / -v Show version. –verbose / -V [options] Give verbose debugging output….
operon – command line music tagger Synopsisoperon [–version] [–help] [-v | –verbose] <command> [<argument>…] operon help <command>Options-h, –help Display help and exit –version Print the program version -v, –verbose Verbose modeCommand-OverviewEdit Tagsadd Add a tag value remove Remove a tag value set Set a tag and remove existing values clear Remove tags copy Copy tags…
operf – Performance profiler tool for Linux Synopsisoperf [ options ] [ –system-wide | –pid <pid> | [ command [ args ] ] ] DescriptionOperf is an OProfile tool that can be used in place of opcontrol for profiling. Operf uses the Linux Performance Events Subsystem, and hence, does not require the use of the…
openvt – start a program on a new virtual terminal (VT). Synopsisopenvt [-c vtnumber] [OPTIONS] [–] command Descriptionopenvt will find the first available VT, and run on it the given command with the given command options, standard input, output and error are directed to that terminal. The current search path ($PATH) is used to find…
opentool – Command line tool for starting tools Synopsisopentool [–library-combo=…] tool [arguments…] Descriptionopentool is obsolete. You should make sure that the Tools directories are in your PATH, and then opentool is not needed anymore. See Alsoopenapp(1), debugapp(1), GNUstep(7) HistoryWork on opentool started in 1997 and was written by Scott Predescu <ovidiu [at] net-community.com>, Ovidiu Predescu…
openstack – OpenStack Command Line Client OpenStack Command Line Synopsisopenstack [<global-options>] <command> [<command-arguments>] openstack help <command> openstack –help Descriptionopenstack provides a common command-line interface to OpenStack APIs. It is generally equivalent to the CLIs provided by the OpenStack project client libraries, but with a distinct and consistent command structure. Authentication Methodsopenstack uses a similar authentication…