Section 1 of the manual describes user commands and tools, for example, file manipulation tools, shells, compilers, web browsers, file and image viewers and editors, and so on.

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alogin
clogin - Cisco login script
alot
Terminal MUA using notmuch mail
alpha-linux-gnu-addr2line
addr2line - convert addresses or symbol+offset into file names and line numbers
alpha-linux-gnu-ar
ar - create, modify, and extract from archives
alpha-linux-gnu-as
AS - the portable GNU assembler
alpha-linux-gnu-c++filt
c++filt - demangle C++ and Java symbols
alpha-linux-gnu-elfedit
elfedit - update ELF header and program property of ELF files
alpha-linux-gnu-gcc-ar-12
gcc-ar - a wrapper around ar adding the --plugin option  
alpha-linux-gnu-gcc-ar
gcc-ar - a wrapper around ar adding the --plugin option  
alpha-linux-gnu-gcc-nm-12
gcc-nm - a wrapper around nm adding the --plugin option  
alpha-linux-gnu-gcc-nm
gcc-nm - a wrapper around nm adding the --plugin option  
alpha-linux-gnu-gcc-ranlib-12
gcc-ranlib - a wrapper around ranlib adding the --plugin option  
alpha-linux-gnu-gcc-ranlib
gcc-ranlib - a wrapper around ranlib adding the --plugin option  
alpha-linux-gnu-gm2-12
gm2 - The GNU Modula-2 Compiler
alpha-linux-gnu-gm2
gm2 - The GNU Modula-2 Compiler
alpha-linux-gnu-gnat-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnat-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnat
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatbind-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatbind-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatbind
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatchop-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatchop-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatchop
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatclean-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatclean-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatclean
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatfind-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatfind
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnathtml-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnathtml-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnathtml
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatkr-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatkr-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatkr
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatlink-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatlink-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatlink
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatls-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatls-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatls
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatmake-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatmake-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatmake
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatname-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatname-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatname
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatprep-12
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatprep-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatprep
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatxref-9
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gnatxref
gnat, gnatbind, gnatbl, gnatchop, gnatfind, gnathtml, gnatkr, gnatlink, gnatls, gnatmake, gnatprep, gnatpsta, gnatpsys, gnatxref - GNAT toolbox
alpha-linux-gnu-gprof
gprof - display call graph profile data
alpha-linux-gnu-ld
ld - The GNU linker
alpha-linux-gnu-ld.bfd
ld - The GNU linker
alpha-linux-gnu-nm
nm - list symbols from object files
alpha-linux-gnu-objcopy
objcopy - copy and translate object files
alpha-linux-gnu-objdump
objdump - display information from object files
alpha-linux-gnu-ranlib
ranlib - generate an index to an archive
alpha-linux-gnu-readelf
readelf - display information about ELF files
alpha-linux-gnu-size
size - list section sizes and total size of binary files
alpha-linux-gnu-strings
strings - print the sequences of printable characters in files
alpha-linux-gnu-strip
strip - discard symbols and other data from object files
alpine
an Alternatively Licensed Program for Internet News and Email
alpinef
alpine - an Alternatively Licensed Program for Internet News and Email
alr-action
List or manually trigger action hooks
alr-build
GPRbuild current working release
alr-clean
GPRclean working release and manage cached releases
alr-config
List, Get, Set or Unset configuration options
alr-dev
Developer helpers
alr-edit
Start GNATstudio with Alire build environment setup
alr-exec
Run the given command in the alire project context
alr-get
Fetches a crate release
alr-index
Manage indexes used by current configuration
alr-init
Creates a new working release with alire metadata, or generate metadata
alr-pin
Pin dependencies to exact versions
alr-printenv
Print the build environment variables
alr-publish
Help with the publication of a new release
alr-run
Launch an executable built by the release
alr-search
Search a string in release names and properties
alr-show
See information about a release
alr-test
Tests the compilation of all or some releases
alr-toolchain
Manage Alire-provided toolchains
alr-update
Updates alire catalog and working release dependencies
alr-version
Shows detailed version, configuration, and environment information
alr-with
Manage release dependencies
alr
Ada Library Repository
als
atool - A script for managing file archives of various types
alsa_delay
measure round-trip latency of a soundcard
alsa_in
alsa_in , alsa_out - Jack clients that perform I/O with an alternate audio interface
alsa_loopback
loop back the first two channels of a alsa device to another device
alsa_out
alsa_in , alsa_out - Jack clients that perform I/O with an alternate audio interface
alsabat
command-line sound tester for ALSA sound card driver  
alsactl
advanced controls for ALSA soundcard driver  
alsaloop
command-line PCM loopback
alsamixer
soundcard mixer for ALSA soundcard driver, with ncurses interface
alsamixergui
FLTK based frontend for alsamixer
alsaplayer
plays various sound files
alsatplg
ALSA Topology Compiler
alsaucm
ALSA Use Case Manager