Section 1: user commands and tools
NAME vim – Vi IMproved, a programmer’s text editor SYNOPSIS vim [options] [file ..] vim [options] – vim [options] -t tag vim [options] -q [errorfile] ex view gvim gview evim eview rvim rview rgvim rgview DESCRIPTION Vim is a text editor that is upwards compatible to Vi. It can be used to edit all kinds…
NAME grep, egrep, fgrep, rgrep – print lines that match patterns SYNOPSIS grep [OPTION…] PATTERNS [FILE…] grep [OPTION…] -e PATTERNS … [FILE…] grep [OPTION…] -f PATTERN_FILE … [FILE…] DESCRIPTION grep searches for PATTERNS in each FILE. PATTERNS is one or more patterns separated by newline characters, and grep prints each line that matches a pattern….
NAME rgb3toppm – combine three portable graymaps into one portable pixmap SYNOPSIS rgb3toppm redpgmfile greenpgmfile bluepgmfile DESCRIPTION Reads three portable graymaps as input. Combines them and produces one portable pixmap as output. SEE ALSO ppmtorgb3(1), pgmtoppm(1), ppmtopgm(1), ppm(5), pgm(5) AUTHOR Copyright (C) 1991 by Jef Poskanzer. Index
NAME rgb2ycbcr – convert non-YCbCr TIFF images to a YCbCr TIFF image SYNOPSIS rgb2ycbcr [ options ] src1.tif src2.tif … dst.tif DESCRIPTION rgb2ycbcr converts RGB color, greyscale, or bi-level TIFF images to YCbCr images by transforming and sampling pixel data. If multiple files are specified on the command line each source file is converted to…
NAME rgb2pct – rgb2pct.py Convert a 24bit RGB image to 8bit paletted SYNOPSIS rgb2pct.py[-n colors | -pct palette_file][-of format] source_file dest_file DESCRIPTION This utility will compute an optimal pseudo-color table for a given RGB image using a median cut algorithm on a downsampled RGB histogram. Then it converts the image into a pseudo-colored image using…
NAME rfcomm – RFCOMM configuration utility SYNOPSIS rfcomm [OPTIONS] <COMMAND> <dev> DESCRIPTION rfcomm(1) is used to set up, maintain, and inspect the RFCOMM configuration of the Bluetooth subsystem in the Linux kernel. If no command is given, or if the option -a is used, rfcomm prints information about the configured RFCOMM devices. OPTIONS -h Gives…
rfcdiff [options] file1 file2 rfcdiff takes two RFCs or Internet-Drafts in text form as input, and produces output which indicates the differences found in one of various forms, controlled by the options listed below. In all cases, page headers and page footers are stripped before looking for changes. –html Produce side-by-side .html diff (default) –chbars…
NAME rexec — remote execution client for an exec server SYNOPSIS rexec [ -abcdhns -l username -p password ] host command DESCRIPTION Rexec calls the rexec(3) routine to act as a client for the remote host’s rexecd(8) server. It asks that “command” be run on the host computer, using username/password authentication. See rexec(3) and rexecd(8)…
NAME revpath – generate a relative path that can be used to undo a change-directory SYNOPSIS revpath path DESCRIPTION The revpath program prints out a relative path that is the “reverse” or “inverse” of path. Start with two directories top and bottom, with the latter below the former, and path is the location of bottom…
NAME rev – reverse lines characterwise SYNOPSIS rev [option] [file…] DESCRIPTION The rev utility copies the specified files to standard output, reversing the order of characters in every line. If no files are specified, standard input is read. This utility is a line-oriented tool and it uses in-memory allocated buffer for a whole wide-char line….
NAME 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,…
NAME retrace-server-worker – Executes the retrace job. SYNOPSIS retrace-server-worker task_id. DESCRIPTION The tool uses mock to prepare a virtual environment for the retrace, runs GDB, saves backtrace and cleans up the virtual environment. The task_id argument is a number derived from the name of the directory where crash data is saved (by default /var/spool/retrace-server/task_id). AUTHORS…
NAME retrace-server-reposync – Maintains local repository cache for Retrace server. SYNOPSIS retrace-server-reposync distribution version architecture DESCRIPTION The tool downloads new packages from public repositories to a local repository cache. A proper plugin for every distribution needs to be installed in plugins directory (by default /usr/share/retrace-server/plugins). Should be set up in root’s or retrace’s crontab to…
NAME retrace-server-interact – use Retrace server’s chroot for interactive debugging. SYNOPSIS retrace-server-interact [-h] [–priv] task_id action DESCRIPTION The tool makes Retrace server’s chroot available for interactive debugging. It enables user to jump into the chroot and execute the correct tool (gdb/crash), automatically loading all relevant files. ACTIONS shell Jump to a shell. Not available if…
NAME retrace-server-cleanup – Collects garbage from Retrace server. SYNOPSIS retrace-server-cleanup DESCRIPTION The tool collects different kinds of garbage created by Retrace server: • Deletes old tasks. The limit to proclaim task old can be changed in the configuration file (DeleteTaskAfter). • Kills tasks running for a long time (> 1 hour). • Cleans up fakeroots…
NAME restoretextmode – save or restore the SVGA registers for textmode. SYNOPSIS restoretextmode {-r|-w} filename DESCRIPTION The state of the SVGA is written to or restored from filename using the vga_gettextmoderegs(3) and vga_settextmoderegs(3) functions. As of this writing this file is 385 bytes long but this might change with future versions. Please do not fiddle…
NAME restorepalette – set the color palette for textmode. SYNOPSIS restorepalette [filename] DESCRIPTION restorepalette without arguments sets the standard VGA palette. This can be useful if it is somehow messed up. With a filename argument a custom palette can be loaded (feature added by Charles Blake <chuckb [at] alice.wonderland.caltech.edu>). This allow a user to set…
NAME restorefont – save or restore the SVGA font for textmode. SYNOPSIS restorefont {-r|-w} filename DESCRIPTION The font used by SVGA when in textmode is written to or restored from filename using the vga_gettextfont(3) and vga_puttextfont(3) functions. FILE FORMAT The VGA font file filename has the following format: Offset: 0 – 31 Character 0 ……
NAME resperf – test the resolution performance of a caching DNS server SYNOPSIS resperf-report [-a local_addr] [-d datafile] [-s server_addr] [-p port] [-x local_port] [-t timeout] [-b bufsize] [-f family] [-e] [-D] [-y [alg:]name:secret] [-h] [-i interval] [-m max_qps] [-r rampup_time] [-c constant_traffic_time] [-L max_loss] [-C clients] [-q max_outstanding] resperf [-a local_addr] [-d datafile] [-s server_addr] [-p port] [-x local_port] [-t timeout] [-b bufsize] [-f family] [-e] [-D] [-y [alg:]name:secret] [-h] [-i interval] [-m max_qps] [-P plot_data_file] [-r rampup_time] [-c constant_traffic_time] [-L max_loss] [-C clients] [-q max_outstanding] DESCRIPTION resperf is…
NAME resolveip – resolve host name to IP address or vice versa SYNOPSIS resolveip [options] {host_name|ip-addr} … DESCRIPTION The resolveip utility resolves host names to IP addresses and vice versa. Note resolveip is deprecated and is removed in MySQL 8.0. nslookup, host, or dig can be used instead. Invoke resolveip like this: shell > resolveip[options]{host_name…