Linux man pages: U

ua2nc(1)
decodes Upper Air reports/stores reports in NetCDF format
ualarm(3)
schedule signal after given number of microseconds
uatof(3)
Converts string into double. Allegro game programming library
uberkey(8)
keylogger
ucdtooff(1)
filter to convert AVS 'ucd' format file into OFF file
ucmatose(1)
RDMA CM connection/simple ping-pong test
uconv(1)
convert data from one encoding to another
uconvert(3)
Hih level string encoding conversion wrapper. Allegro game programming library
uconvert_ascii(3)
Converts string from ASCII into current format. Allegro game programming library
uconvert_size(3)
Number of bytes needed to store string after conversion. Allegro game programming library
uconvert_toascii(3)
Converts strings from current format into ASCII. Allegro game programming library
ucs2any(1)
make BDF fonts containing subsets of ISO 10646-1 codepoints
ucwidth(3)
Low level helper function for testing Unicode text data. Allegro game programming library
udaddy(1)
RDMA CM datagram setup/simple ping-pong test
uddi(3)
UDDI client interface
udev(7)
dynamic device management
udev(8)
configurable dynamic device naming support
udevadm(8)
udev management tool
udevcontrol(8)
event managing daemon
udevd(8)
event managing daemon
udevinfo(8)
query device info from udev database
udevmonitor(8)
print kernel/udev event sequence to console
udevsend(8)
event managing daemon
udevsettle(8)
wait until queued kernel/udev events are handled
udevstart(8)
populate initial device directory
udevtest(8)
simulate udev run/print action to console
udevtrigger(8)
request kernel devices events for coldplug
udns(3)
stub DNS resolver library
udp(7)
User Datagram Protocol for IPv4
udp-receiver(1)
receive files broadcast by udp-sender
udp-sender(1)
broadcast file on LAN
udpm(3)
Perl extension for User Dialogs
udunits(1)
Unidata units utility
udunits(3)
Unidata units library
udunitsperl(1)
perl extension for UDUNITS
uevent(n)
User events
ufraw(1)
Convert camera RAW images to standard image files
ugetat(3)
Finds out value of char in string. Allegro game programming library
ugetc(3)
Low level helper function for reading Unicode text data. Allegro game programming library
ugetrlimit(2)
get/set resource limits
ugetx(3)
Low level helper function for reading Unicode text data. Allegro game programming library
ugetxc(3)
Low level helper function for reading Unicode text data. Allegro game programming library
ui(3)
New User Interface
ui_add_error_string(3)
New User Interface
ui_add_info_string(3)
New User Interface
ui_add_input_boolean(3)
New User Interface
ui_add_input_string(3)
New User Interface
ui_add_user_data(3)
New User Interface
ui_add_verify_string(3)
New User Interface
ui_compat(3)
Compatibility user interface functions
ui_construct_prompt(3)
New User Interface
ui_ctrl(3)
New User Interface
ui_dup_error_string(3)
New User Interface
ui_dup_info_string(3)
New User Interface
ui_dup_input_boolean(3)
New User Interface
ui_dup_input_string(3)
New User Interface
ui_dup_verify_string(3)
New User Interface
ui_free(3)
New User Interface
ui_get0_result(3)
New User Interface
ui_get0_user_data(3)
New User Interface
ui_get_default_method(3)
New User Interface
ui_get_method(3)
New User Interface
ui_new(3)
New User Interface
ui_new_method(3)
New User Interface
ui_openssl(3)
New User Interface
ui_process(3)
New User Interface
ui_set_default_method(3)
New User Interface
ui_set_method(3)
New User Interface
uic(1)
Qt user interface compiler
uid(3)
uil(1)
uil(3)
uil(5)
uildumpsymboltable(3)
uilib(3)
User interface library intro
uim-xim(1)
XIM interface to UIM
uinsert(3)
Inserts char in string. Allegro game programming library
uint16_c(3)
uint16_max(3)
uint16_t(3)
uint32_c(3)
uint32_max(3)
uint32_t(3)
uint64_c(3)
uint64_max(3)
uint64_t(3)
uint8_c(3)
uint8_max(3)
uint8_t(3)
uint_farptr_t(3)
uint_fast16_max(3)
uint_fast16_t(3)
uint_fast32_max(3)
uint_fast32_t(3)
uint_fast64_max(3)
uint_fast64_t(3)
uint_fast8_max(3)
uint_fast8_t(3)
uint_least16_max(3)
uint_least16_t(3)
uint_least32_max(3)
uint_least32_t(3)
uint_least64_max(3)
uint_least64_t(3)
uint_least8_max(3)
uint_least8_t(3)
uintmax_c(3)
uintmax_max(3)
uintmax_t(3)
uintptr_max(3)
uintptr_t(3)
uisdigit(3)
Tells if char is digit. Allegro game programming library
uisok(3)
Low level helper function for testing Unicode text data. Allegro game programming library
uisp(1)
manual page for uisp
uisspace(3)
Tells if char is whitespace. Allegro game programming library
ujconv(1)
reinvented iconv using Unicode::Japanese
ujguess(1)
Guess encoding of given files
ul(1)
ulckpwdf(3)
encrypted password file routines
ulimit(1)
set/get shells resource usage limits
ulimit(3)
get/set user limits
ulogd(8)
netfilter/iptables ULOG daemon
ultoa(3)
umad_addr_dump(3)
dump addr structure to stderr
umad_alloc(3)
allocate memory for umad buffers
umad_close_port(3)
close InfiniBand device port for umad access
umad_debug(3)
set debug level
umad_done(3)
perform library initialization/finalization
umad_dump(3)
dump umad buffer to stderr
umad_free(3)
frees memory of umad buffers
umad_get_ca(3)
get/release InfiniBand device port attribs
umad_get_ca_portguids(3)
InfiniBand device ports GUIDs
umad_get_cas_names(3)
list of available InfiniBand device names
umad_get_fd(3)
umad fd for requested port
umad_get_mad(3)
MAD pointer of umad buffer
umad_get_mad_addr(3)
address of ib_mad_addr from umad buffer
umad_get_port(3)
open/close InfiniBand port
umad_init(3)
perform library initialization/finalization
umad_open_port(3)
open InfiniBand device port for umad access
umad_poll(3)
poll umad
umad_recv(3)
receive umad
umad_register(3)
register specified management class/version for port
umad_register_oui(3)
register specified class in vendor range 2 for port
umad_release_ca(3)
get/release InfiniBand device port attribs
umad_release_port(3)
open/close InfiniBand port
umad_send(3)
send umad
umad_set_addr(3)
set MAD address fields within umad buffer using host ordering
umad_set_addr_net(3)
set MAD address fields within umad buffer using network ordering
umad_set_grh(3)
set GRH fields within umad buffer using host ordering
umad_set_grh_net(3)
set GRH fields within umad buffer using network ordering
umad_size(3)
size of umad buffer
umad_status(3)
status of umad buffer
umad_unregister(3)
unregister umad agent
umap(1)
map between different char sets
umask(1)
set/get file-creation mask
umask(2)
set file mode creation mask
umask(3)
set/get file mode creation mask
umb-scheme(1)
UMB Scheme
umlclass.pl(1)
Utility to make UML class diagrams from Perl source/runtime
umlspeed(1)
Compile UML code to SVG diagrams, XMI and source
ummf(1)
driver for UMMF
ummf(3)
UML Meta-Model Framework. UML to code generation via XMI. Implements UML 1.5 meta-model. Provides object-oriented Perl interface for processing UML meta-models ...
ummf.pl(1)
driver for UMMF
umount(2)
mount/unmount filesystems
umount(8)
unmount file systems
umount.cifs(8)
for normal, non-root users, to unmount their own Common Internet File System mounts
umount.crypt(8)
unmount dm-crypt encrypted volume
umount.davfs(8)
Umount-helper to unmount davfs2 file system
umount.nfs(8)
unmount Network File System
umount2(2)
mount/unmount filesystems
unalias(1)
bash built-in commands, see bash
uname(1)
print system info
uname(2)
name/info about current kernel
uname(3)
name of current system
unarj(1)
Unarchive ARJ files
unattr(8)
remove choosen xattr from files, recursively
unbin(1)
Macintosh file format transformer
unbuffer(1)
unbuffer output
uncompface(1)
compress/expand 48x48x1 face image files
uncompface(3)
compress/expand 48x48x1 face image files
uncompress(1)
compress/expand data
unctrl(3)
miscellaneous curses utility routines
undocumented(2)
undocumented system calls
undocumented(3)
undocumented library functions
unent(1)
replace HTML predefined char entities to UTF-8
unexpand(1)
convert spaces to tabs
unexpunge(8)
restore expunged messages
unflatablexpr(3)
unflatten(1)
adjust directed graphs to improve layout aspect ratio
unflattenlofig(3)
unfreeze(1)
compress/uncompress files
unfsd(8)
NFS server process
unget(1)
undo previous get of SCCS file
unget_wch(3)
wide char from curses terminal keyboard
ungetc(3)
input of char/strings
ungetch(3)
char from curses terminal keyboard
ungetmouse(3)
mouse interface through curses
ungetwc(3)
push back wide char onto FILE stream
unhex(1)
Macintosh file format transformer
uni2ascii(1)
convert UTF-8 Unicode to various 7-bit ASCII representations
unicharisalpha(3)
routines for classification of Tcl_UniChar char
unicode(7)
Universal char Set
unicode_start(1)
put keyboard/console in unicode mode
unicode_stop(1)
revert keyboard/console from unicode mode
uniconv(1)
convert Netatalk volume encoding
unifdef(1)
unilog(3)
Perl module for unified logging on Unix/Win32
unimplemented(2)
unimplemented system calls
uniq(1)
report/omit repeated lines
uniq(3)
uniq.plug(1)
plugin for rpmrebuild, to remove duplicate spec lines
unitdiff(1)
Describe diff in interface of FPC unit
units(1)
unit conversion program
units(7)
decimal/binary prefixes
units(n)
unit conversion
universal(3)
base class for ALL classes
unix(3)
Interface to Unix system
unix(7)
Sockets for local interprocess communication
unix.largefile(3)
File operations on large files
unix2dos(1)
UNIX to DOS text file format converter
unix_chkpwd(8)
helper binary that verifies password of current user
unix_telnet(3)
unknown(n)
Handle attempts to use non-existent commands
unlink(1)
call unlink function to remove specified file
unlink(2)
delete name/possibly file it refers to
unlink(3)
remove directory entry
unlinkat(2)
remove directory entry relative to directory file descriptor
unlisten(7)
stop listening for notification
unload_datafile(3)
Frees all objects in datafile. Allegro game programming library
unload_datafile_object(3)
Frees object previously loaded by load_datafile_object(). Allegro game programming library
unlocked_stdio(3)
non-locking stdio functions
unlockpt(3)
unlock pseudo-terminal master/slave pair
unlzma(1)
LZMA compression/decompression tool
unmarkbddnode(3)
unnamedobj(3)
unoconv(1)
convert any document from/to any OpenOffice supported format
unpack200-java-1.7.0-icedtea(1)
JAR Unpacking tool
unpipe(1)
convert output of pipe back to XML format
unpost_form(3)
write/erase forms from associated subwindows
unpost_menu(3)
write/erase menus from associated subwindows
unprotoize(1)
automatically add/remove function prototypes
unrar(1)
extract files from rar archives
unregister_app_config_handler(3)
read_config functions
unregister_config_handler(3)
read_config functions
unrtf(1)
converts document in RTF format to other formats
unscare_mouse(3)
Undoes effect of scare_mouse()/scare_mouse_area(). Allegro game programming library
unselect_palette(3)
Restores palette before last call to select_palette(). Allegro game programming library
unset(1)
bash built-in commands, see bash
unset(n)
Delete variables
unsetbddrefext(3)
unsetenv(3)
change/add environment variable
unsf(1)
break up SoundFont .sf2 files into GUS-type instrument patches
unshar(1)
unpack shar file
unshare(2)
disassociate parts of process execution context
unsign(1)
unsingle(1)
Macintosh file format transformer
unstr(1)
dump strings in pointer order
untaint(3)
Module for laundering tainted data
untouchwin(3)
curses refresh control routines
unw_create_addr_space(3)
create address space for remote unwinding
unw_destroy_addr_space(3)
destroy unwind address space
unw_flush_cache(3)
flush cached info
unw_get_accessors(3)
pointer to accessor call-backs
unw_get_fpreg(3)
contents of floating-point register
unw_get_proc_info(3)
info on current procedure
unw_get_proc_info_by_ip(3)
procedure info by IP
unw_get_proc_name(3)
name of current procedure
unw_get_reg(3)
register contents
unw_getcontext(3)
initial machine-state
unw_init_local(3)
initialize cursor for local unwinding
unw_init_remote(3)
initialize cursor for remote unwinding
unw_is_fpreg(3)
check if register is floating-point register
unw_is_signal_frame(3)
check if current frame is signal frame
unw_regname(3)
register name
unw_resume(3)
resume execution in particular stack frame
unw_set_caching_policy(3)
set unwind caching policy
unw_set_fpreg(3)
set contents of floating-point register
unw_set_reg(3)
set register contents
unw_step(3)
advance to next stack frame
unw_strerror(3)
text corresponding to error code
unwrapdiff(1)
demangle word-wrapped patches
unzip(1)
list, test and extract compressed files in ZIP archive
unzipsfx(1)
self-extracting stub for prepending to ZIP archives
unzsplit(8)
will read splitted files produced by zsplit, glue and decompress them to its origin
uoffset(3)
Finds offset of char in string. Allegro game programming library
up2date(8)
program for updating packages on Red Hat Enterprise
update(7)
update rows of table
update(n)
Process pending events/idle callbacks
update-alternatives(8)
maintain symbolic links determining default commands
update-mime-database(1)
build Shared MIME-Info
update-pciids(8)
download new version of PCI ID list
update-reader.conf(8)
make /etc/reader.conf
update_dialog(3)
Low level function to update dialog player. Allegro game programming library
update_menu(3)
Low level function to update menu player. Allegro game programming library
update_panels(3)
panel stack extension for curses
updatedb(1)
update slocate database
updatedb(8)
update database for mlocate
updatedb.conf(5)
config file for updatedb
updatenews(8)
post articles from outgoing spool directory/prefetch newsgroups
updmap(1)
Update font map files for TeX output drivers
updmap-sys(1)
Update font map files for TeX output drivers
updwtmp(3)
append entry to wtmp file
uplevel(n)
Execute script in different stack frame
upnpd(8)
UPnP Internet Gateway Device daemon
ups.conf(5)
UPS definitions for Network UPS Tools
upsc(8)
example lightweight UPS client
upscli_connect(3)
Open connection to NUT upsd
upscli_disconnect(3)
disconnect from UPS server
upscli_fd(3)
file descriptor for connection
upscli_get(3)
data from UPS
upscli_list_next(3)
list items from UPS
upscli_list_start(3)
begin multi-item retrieval from UPS
upscli_readline(3)
read single response from UPS
upscli_sendline(3)
send single command to UPS
upscli_splitaddr(3)
split listening address into its components
upscli_splitname(3)
split UPS definition into its components
upscli_ssl(3)
Check SSL mode for current connection
upscli_strerror(3)
return string describing error condition
upscli_upserror(3)
current error number for connection
upsclient(3)
Network UPS Tools client access library
upscmd(8)
UPS administration program for instant commands
upscode2(8)
Driver for UPScode II compatible UPS equipment
upsd(8)
UPS info server
upsd.conf(5)
config for Network UPS Tools upsd
upsd.users(5)
Administrative user definitions for NUT upsd
upsdrvctl(8)
UPS driver controller
upsimage.cgi(8)
Image-generating helper for upsstats.cgi
upslog(8)
UPS status logger
upslug2(8)
utility to upgrade firmware of NSLU2
upsmon(8)
UPS monitor/shutdown controller
upsmon.conf(5)
config for Network UPS Tools upsmon
upsrw(8)
UPS variable administration tool
upssched(8)
Timer helper for scheduling events from upsmon
upssched.conf(5)
config for upssched timer program
upsset.cgi(8)
Web-based UPS administration program
upsset.conf(5)
config for Network UPS Tools upsset.cgi
upsstats.cgi(8)
Web-based UPS status viewer
upsstats.html(5)
HTML template for Network UPS Tools upsstats
upstr(3)
uptime(1)
Tell how long system has been running
upvar(3)
link one variable to another
upvar(n)
Create link to variable in different stack frame
upx(1)
compress/expand executable files
ur98(4)
UR98 head tracker driver
urandom(4)
kernel random number source devices
uread(1)
reads Fortran unformatted file
ureadkey(3)
Returns next unicode char from keyboard buffer. Allegro game programming library
uremove(3)
Removes char from string. Allegro game programming library
uri(3)
Uniform Resource Identifiers
uri(7)
uniform resource identifier , including URL or URN
uri(n)
URI utilities
uriexec(1)
Decode/execute given URI-encoded command
url(7)
uniform resource identifier , including URL or URN
url.list(5)
websec url monitoring config
urls_txt(5)
urlsnarf(8)
sniff HTTP requests in Common Log Format
urlview(1)
URL extractor/launcher
urn(7)
uniform resource identifier , including URL or URN
urxvt(1)
urxvt(7)
FAQ, command sequences and other background info
urxvtc(1)
control urxvtd daemon
urxvtd(1)
urxvt terminal daemon
urxvtperl(3)
rxvt-unicode's embedded perl interpreter
usbhid-ups(8)
Driver for USB/HID UPS equipment
usbmodules(8)
kernel driver modules available for plugged in USB device
use-devel-assertos(1)
package Devel::AssertOS modules with your code
use_default_colors(3)
use terminal's default colors
use_env(3)
miscellaneous curses utility routines
use_extended_names(3)
miscellaneous curses extensions
use_legacy_coding(3)
use terminal's default colors
uselib(2)
load shared library
user(3)
useradd(8)
create new user/update default new user info
userdb(8)
change /etc/userdb
userdbpw(8)
create encrypted password
userdel(8)
delete user account/related files
userhelper(8)
helper interface to pam
userinfo(1)
graphical equivilient to chfn
userisdnctl(8)
Control/setup ISDN parameters
usermod(8)
modify user account
usermount(1)
mount, unmount and format filesystems
usernetctl(8)
allow user to change network interface if permitted
userpasswd(1)
allow users to change their passwords
users(1)
print user names of users currently logged in to current host
users(5)
user authorization file for FreeRADIUS server
usetat(3)
Replaces char in string. Allegro game programming library
usetc(3)
Low level helper function for writing Unicode text data. Allegro game programming library
ushare(1)
lightweight UPnP /V/DLNA Media Server
using_avrprog(3)
Using avrdude program
using_tools(3)
Using GNU tools This is short summary of AVR-specific aspects of using GNU tools. Normally, generic documentation of these tools is fairly large and maintained ...
usleep(1)
sleep some number of microseconds
usleep(3)
suspend execution for microsecond intervals
usprintf(3)
Writes formatted data into buffer. Allegro game programming library
ustat(2)
file system statistics
ustr(3)
ustr string library functions
ustr-import(1)
ustr string library import tool
ustr_const(3)
ustr string library constants
ustrcat(3)
Concatenates string to another one. Allegro game programming library
ustrchr(3)
Finds first occurrence of char in string. Allegro game programming library
ustrcmp(3)
Compares two strings. Allegro game programming library
ustrcpy(3)
Copies string into another one. Allegro game programming library
ustrdup(3)
Duplicates string. Allegro game programming library
ustrerror(3)
Returns string describing errno. Allegro game programming library
ustricmp(3)
Compares two strings ignoring case. Allegro game programming library
ustrip(1)
strips record length info from Fortran unformatted file
ustrlen(3)
Tells number of char in string. Allegro game programming library
ustrlwr(3)
Replaces all letters with lower case. Allegro game programming library
ustrncat(3)
Concatenates string to another one, specifying size. Allegro game programming library
ustrncmp(3)
Compares up to n letters of two strings. Allegro game programming library
ustrncpy(3)
Copies string into another one, specifying size. Allegro game programming library
ustrnicmp(3)
Compares up to n letters of two strings ignoring case. Allegro game programming library
ustrpbrk(3)
Finds first char that matches any in set. Allegro game programming library
ustrrchr(3)
Finds last occurence of char in string. Allegro game programming library
ustrsize(3)
Size of string in bytes without null terminator. Allegro game programming library
ustrsizez(3)
Size of string in bytes including null terminator. Allegro game programming library
ustrstr(3)
Finds first occurence of string in another one. Allegro game programming library
ustrtod(3)
Converts string into floating point number. Allegro game programming library
ustrtok(3)
Retrieves tokens from string. Allegro game programming library
ustrtok_r(3)
Reentrant function to retrieve tokens from string. Allegro game programming library
ustrtol(3)
Converts string into integer. Allegro game programming library
ustrupr(3)
Replaces all letters with upper case. Allegro game programming library
ustrzcat(3)
Concatenates string to another one, specifying size. Allegro game programming library
ustrzcpy(3)
Copies string into another one, specifying size. Allegro game programming library
ustrzncat(3)
Concatenates string to another one, specifying size. Allegro game programming library
ustrzncpy(3)
Copies string into another one, specifying size. Allegro game programming library
usual(n)
access default option-handling commands for mega-widget component
uswap(1)
converts endianness of Fortran unformatted file
uszprintf(3)
Writes formatted data into buffer, specifying size. Allegro game programming library
utf(3)
routines for manipulating UTF-8 strings
utf-8(7)
ASCII compatible multi-byte Unicode encoding
utf8(3)
Perl pragma to enable/disable UTF-8 in source code
utf8(7)
ASCII compatible multi-byte Unicode encoding
utf8bom(1)
handling Byte Order Mark for UTF-8 files
utf8bom(3)
handling Byte Order Mark for UTF-8 files
utf8tolatin1(1)
utf8trans(1)
Transliterate UTF-8 char according to table
util_crc(3)
util_delay(3)
util_delay_basic(3)
util_parity(3)
util_twi(3)
utime(2)
change access/modification times of inode
utime(3)
set file access/modification times
utimes(2)
change access/modification times of inode
utimes(3)
set file access/modification times
utmp(5)
login records
utmpname(3)
access utmp file entries
utoa(3)
utolower(3)
Converts letter to lower case. Allegro game programming library
utoupper(3)
Converts letter to upper case. Allegro game programming library
utrac(1)
recognize/convert charset/end-of-line of text files
uucico(8)
UUCP file transfer daemon
uucp(1)
Unix to Unix copy
uudecode(1)
encode binary file, or decode its representation
uudeview(1)
powerful decoder for binary files
uuencode(1)
encode binary file, or decode its representation
uuencode(5)
format of encoded uuencode file
uuencode(n)
UU-encode/decode binary data
uuenview(1)
powerful encoder for binary files
uuid(1)
Universally Unique Identifier Tool
uuid(3)
DCE compatible Universally Unique Identifier library
uuid(n)
UUID generation/comparison
uuid-config(1)
OSSP uuid API build utility
uuid_clear(3)
reset value of UUID variable to NULL value
uuid_compare(3)
compare whether two UUIDs are same
uuid_copy(3)
copy UUID value
uuid_generate(3)
create new unique UUID value
uuid_generate_random(3)
create new unique UUID value
uuid_generate_time(3)
create new unique UUID value
uuid_is_null(3)
compare value of UUID to NULL value
uuid_parse(3)
convert input UUID string into binary representation
uuid_time(3)
extract time at which UUID was created
uuid_unparse(3)
convert UUID from binary representation to string
uuidd(8)
UUID generation daemon
uuidgen(1)
utility to create new UUID value
uuname(1)
names of known remote UUCP sites
uustat(1)
UUCP status inquiry/control
uux(1)
Remote command execution over UUCP
uuxqt(8)
UUCP execution daemon
uvsprintf(3)
Writes formatted data into buffer, using variable arguments. Allegro game programming library
uvszprintf(3)
Writes formatted data into buffer, using size and variable arguments. Allegro game programming library
uwidth(3)
Low level helper function for testing Unicode text data. Allegro game programming library
uwidth_max(3)
Number of bytes char can occupy. Allegro game programming library
uwildmat(3)
Perform wildmat matching
uxterm(1)
X terminal emulator for Unicode environments