Linux Manuals

heif-enc – convert image to HEIC/HEIF Synopsisheif-enc [-h|–help] [-q QUALITY|–quality QUALITY] [-L|–lossless] [-t SIZE|–thumb SIZE] [–no-alpha] [–no-thumb-alpha] [-o FILENAME|–output FILENAME] [-v|–verbose] [-P|–params] [-b DEPTH] [-p NAME=VALUE] filename[.jpg|.png|.y4m] Descriptionheif-enc Convert image to HEIC/HEIF. Options-q QUALITY, –quality QUALITY Defines quality level between 0 and 100 for the generated output file. -L, –lossless Generate lossless output (-q has no effect)…

heif-convert – convert HEIC/HEIF image Synopsisheif-convert [-q QUALITY] filename output[.jpg|.png|.y4m] Descriptionheif-convert Convert HEIC/HEIF image to a different image format. Options-q QUALITY Defines quality level between 0 and 100 for the generated output file.Exit Status0 Success 1 Failure (syntax or usage error; error while loading, converting or writing image).NotesThe available output formats depend on the libraries that…

hdifftopam – convert horizontal difference image to original PAM image Synopsishdifftopam[pamfile] [-pnm] [-verbose] Minimum unique abbreviation of option is acceptable. You may use double hyphens instead of single hyphen to denote options. You may use white space in place of the equals sign to separate an option name from its value. DescriptionThis program is part…

hdf – Hierarchical Data Format library Synopsis -lmfhdf -ldf -ljpeg -lz [ -lsz ] {HDFLIBDIR}/libmfhdf.a {HDFLIBDIR}/libdf.a {JPEGLIBDIR}/libjpeg.a {GZIPLIBDIR}/libz.a [{SZIPLIBDIR}/libsz.a] DescriptionHDF is a multi-object file format that facilitates the transfer of various types of scientific data between machines and operating systems. See http://www.hdfgroup.org/release4/platforms.html for a list of platforms currently supported. HDF allows self-definitions of data content…

hexdump – display file contents in hexadecimal, decimal, octal, or ascii hexdump options file … hd options file … DescriptionThe hexdump utility is a filter which displays the specified files, or standard input if no files are specified, in a user-specified format. OptionsBelow, the length and offset arguments may be followed by the multiplicative suffixes…

hcitrace – hcitrace daemon Synopsishcitrace Descriptionhcitrace daemon allow per advanced tracing capabilities with multiple HCI controllers per stream. Usagehcitrace [OPTION…] Help Options:   -h, –help         Show help options Application Options:   -n, –nodaemon     Don’t run as daemon in background   -d, –debug        Enable debug information output AuthorThis manual page was written by Nobuhiro Iwamatsu <iwamatsu [at] debian.org>, for the Debian GNU/Linux system (but may…

hcitool – Configure Bluetooth connections Synopsishcitool -h hcitool COMMAND –help hcitool [-i hciX] [COMMAND [PARAMETERS]] Descriptionhcitool(1) is used to configure Bluetooth connections and send some special command to Bluetooth devices. If no command is given, or if the option -h is used, hcitool prints some usage information and exits. Options-i <hciX> The command is applied to…

hciemu – HCI emulator Synopsishciemu [options] local_address Descriptionhciemu is used to emulate an HCI via hci_vhci kernel module Options-d device use specified device -b bdaddr emulate bdaddr -s file create snoop file file -n do not detach AuthorsWritten by Marcel Holtmann <marcel [at] holtmann.org> and Maxim Krasnyansky <maxk [at] qualcomm.com>, man page by Filippo Giunchedi <filippo [at] debian.org>

hcidump – Parse HCI data Synopsishcidump [-h] hcidump [option [option…]] [filter] Descriptionhcidump reads raw HCI data coming from and going to a Bluetooth device (which can be specified with the option -i, default is the first available one) and prints to screen commands, events and data in a human-readable form. Optionally, the dump can be…

hciconfig – Configure Bluetooth devices Synopsishciconfig -h hciconfig [-a] hciconfig [-a] hciX [COMMAND [PARAMETERS]] Descriptionhciconfig(1) is used to configure Bluetooth devices. hciX is the name of a Bluetooth device installed in the system. If hciX is not given, hciconfig prints name and basic information about all the Bluetooth devices installed in the system. If hciX…

hciattach – attach serial devices via UART HCI to BlueZ stack Synopsishciattach [OPTIONS] <tty> <type|id> [speed] [flow] [sleep] [bdaddr] hciattach -1 Descriptionhciattach(1) is used to attach a serial UART to the Bluetooth stack as HCI transport interface. Options-i Send break -n Don’t detach from controlling terminal. -p Print the PID when detaching. -t timeout Specify an…

hbf2gf – convert a CJK bitmap font into subfonts usable by TeX and Omega. Synopsishbf2gf [-q] configuration-file[.cfg] hbf2gf [-q] [-p] [-g] [-n] subfont-name x-resolution [y-scale | y-resolution] hbf2gf -t [-q] subfont-name hbf2gf –version | –help DescriptionCJK bitmap fonts can’t be directly used with TeX because the number of characters in such fonts exceeds 256, the limit of…

hb_takeover – hb_takeover is a simple linux-ha shell script. It issues a command to takeover resources from the other node, if available. Synopsishb_takeover [all|foreign|local|failback] DescriptionThe full path is usually /usr/lib/heartbeat/hb_takeover. Performing an hb_takeover on the current node is equivalent to performing an hb_standby on the other node. Caveatshb_takeover is only usable in R1-style configurations (i.e.,…

hb_standby – hb_standby is a simple linux-ha shell script. It issues a failover from the node where it is running to the other node, if available. Synopsishb_standby [all|foreign|local|failback] DescriptionThe full path is usually /usr/lib/heartbeat/hb_standby. To get a list of the options to hb_standby issue the command, "/usr/lib/heartbeat/hb_standby –help" . NOTE: For historical reasons, unlike most…

hb_delnode – hb_delnode is a simple linux-ha shell script. It sends a message to the cluster to delete nodes. Synopsishb_delnode <node1> [node2] [node3] … DescriptionThe full path is usually /usr/lib/heartbeat/hb_delnode. To get a list of the options, issue the command, "/usr/lib/heartbeat/hb_delnode –help" If there is any node in the arguments is not in the cluster,…

hb_addnode – hb_addnode is a simple linux-ha shell script. It sends a message to the cluster to add new nodes. Synopsishb_addnode <node1> [node2] [node3] … DescriptionThe full path is usually /usr/lib/heartbeat/hb_addnode. To get a list of the options, issue the command, "/usr/lib/heartbeat/hb_addnode –help" If there is any node in the arguments has already been in…

hashdeep – Compute, compare, or audit multiple message digests Synopsishashdeep -V | -h hashdeep [-c <alg1>[,<alg2>]] [-k <file>] [-i <size>] [-f <file>] [-o <fbcplsde>] [-amxwMXreEspblvv] [-F<bum>] [-j <num>] [FILES] DescriptionComputes multiple hashes, or message digests, for any number of files while optionally recursively digging through the directory structure. By default the program computes MD5 and…

bash, :, ., [, alias, bg, bind, break, builtin, caller, cd, command, compgen, complete, compopt, continue, declare, dirs, disown, echo, enable, eval, exec, exit, export, false, fc, fg, getopts, hash, help, history, jobs, kill, let, local, logout, mapfile, popd, printf, pushd, pwd, read, readonly, return, set, shift, shopt, source, suspend, test, times, trap, true, type,…

hardlink – link multiple copies of a file Synopsishardlink [options] [directory|file]… Descriptionhardlink is a tool which replaces copies of a file with hardlinks, therefore saving space. Options-h, –help print quick usage details to the screen. -v, –verbose More verbose output. If specified once, every hardlinked file is displayed, if specified twice, it also shows every…

hardening-check – check binaries for security hardening features Synopsishardening-check [options] [ELF …] Examine a given set of ELF binaries and check for several security hardening features, failing if they are not all found. DescriptionThis utility checks a given list of ELF binaries for several security hardening features that can be compiled into an executable. These…