How do you install flex in Linux using apt-get command?
Here is a tutorial to learn how to install flex using apt-get command.
Step 1: Open terminal with su access and enter the command as shown below:
apt-get install flex -y
Step 2: After completion, the install command exits and instructs the user to restart the running instances of flex if it is running already.
Result of the Command Execution shown below:
root@hiox:~ apt-get install flex -y
Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer required:
x11 apps libopenal1 jmeter help texlive common libmono data tds2.0 cil
sane utils libmono c5 1.0 cil lib32bz2 1.0 libplist1 liblash2 libjna java
libxcb aux0 libedit2 libgnumail java php fpdf menu xdg mesa utils ejabberd
asymptote doc libsm dev libatk1.0 0 jsvc menu libavahi qt3 1 syslinux
libnet daemon perl libnumber compare perl libpackagekit qt 12
gnome media common erlang eunit fp units rtl fp units base libwpd8c2a
libopencascade foundation 6.3.0 gconf2 common libswscale0 libcdio10
libgtk2.0 common idzebra 2.0 utils libdb je java hdparm
libmono npgsql2.0 cil dnsmasq base libtwolame0
libboost serialization1.40 dev krita data junit4 espeak kicad common
libmono security2.0 cil libnet ssleay perl kdelibs4c2a libgsf 1 common
xfonts 75dpi python pyorbit libmtp8 rpm2cpio extra xdg menus
libexcalibur logger java gedit common xsltproc libgutenprint2
gambas2 gb qt opengl libxcb atom1 erlang crypto libg15daemon client1
guile 1.8 libgnuradio libfbclient2 xserver xorg video all python debian llvm
ttf gfs bodoni classic libmono wcf3.0 cil gpsim console setup libxcomposite1
libice dev lp solve liboro java libgail18 xserver xorg video apm
libmono peapi2.0 cil libavutil49 libwxbase2.8 0 libntfs10
libaiksaurus 1.2 data libappframework java libdigest sha1 perl
xserver xorg video ark libflite1 gputils doc fakeroot kword data
xserver xorg video ati unattended upgrades libxrandr dev
libmono system data1.0 cil libgmime 2.4 2 libcupsppdc1 libnb javaparser java
libgeronimo jms 1.1 spec java libgnome2 vfs perl libhal storage1
gambas2 gb info libnet ip perl libdb4.7 java libmono simd2.0 cil
libmono system2.0 cil libmono1.0 cil xfonts scalable libexpat1 dev
libcdio paranoia0 libiw dev libcompizconfig0 libmono system ldap1.0 cil
lib32gomp1 python twisted bin libwebkit 1.0 common squashfs tools
libatlas3gf base libatlas headers erlang corba bind9 host python numpy
libmono0 libiceutil33 gamin enblend python mako debhelper erlang asn1
usbmuxd libnet dns perl gambas2 dev libxdamage dev ttf gfs olga
lib32ncurses5 python avahi pkg config libavalon framework java gcj 4.4 base
libxklavier16 libcupscgi1 libmono getoptions1.0 cil libgudev 1.0 0
poppler utils libmono cscompmgd8.0 cil gfortran 4.4 dirmngr
libmono data1.0 cil gambas2 doc ktorrent data xserver xorg video openchrome
libkpathsea5 libgsl0 dev libwmf0.2 7 libqt4 opengl dev erlang xmerl
intel gpu tools groff xbase clients preview latex style gnuradio pager
libmono sharpzip0.84 cil libusrp2 dev libmono sqlite2.0 cil texlive lvm2
libmono ldap1.0 cil liba52 0.7.4 dev libhfsp0 libdlr0.9 cil
libpthread stubs0 ttf gfs didot python compizconfig idzebra 2.0 common
libavc1394 0 esound clients smbclient libjtidy java libbonobo2 common
screen resolution extra libcupsdriver1 libjzlib java nmap libotf0 tex4ht
libatk1.0 data libsgutils2 2 erlang snmp libprotobuf5 libgnuradio dev
gnome mime data iso codes libcfitsio3 libblas dev libmono management2.0 cil
libkipi7 python pycurl libicu4j java libsox fmt mp3 librplay3 erlang tools
gambas2 gb crypt gnome panel data libboost system1.40.0 libfreemarker java
libservlet2.4 java upower libgnuradio usrp2 dev libsox fmt base anthy
xserver xorg video s3virge fp units multimedia desktop file utils
xserver xorg video v4l pulseaudio python couchdb clamav antlr python openssl
libqtscript4 network x11 xkb utils libxalan2 java libcairo perl enfuse
gputils libcommons jexl java libfluidsynth1 xserver xorg video mga
obex data server erlang edoc libyaml syck perl fp units gnome1
libparted0debian1 xserver xorg video chips libecal1.2 7 libbeagle1
libgnuradio audio alsa dev libmono corlib2.0 cil libaio1 libsane
libxfixes dev udisks libimobiledevice0 g++ 4.4 libboost signals1.40.0
odbcinst1debian1 libqt4 test libmockobjects java libgnuinet java
dhcp3 server libidzebra 2.0 mod text libquicktime1 php5 seabios
lxde icon theme libhyphen0 libsdl mixer1.2 erlang syntax tools
libgl1 mesa dev libasound2 dev ipvsadm libboost thread1.40 dev
xserver xorg core cli common libmono system web mvc1.0 cil libftgl2
libglew1.5 libfile find rule perl xserver xorg video mach64 libsox fmt oss
ttf gfs theokritos libasm2 java libibus1 gambas2 gb v4l libsox fmt pulse
tftpd hpa libproxy0 libjpeg progs libqtscript4 gui xterm libnspr4 dev
default jdk doc libxcb render util0 dev libgnuradio core0 libnm util1
libgnuradio qtgui0 llvm dev python imaging libfreeradius2
libmono cairo2.0 cil xserver common libtagc0 libmono relaxng1.0 cil
libboost date time dev libsox fmt alsa python httplib2 libbonobo2 0 libtdb1
libdbi perl libvte common python egenix mxtools gambas2 gb sdl sound
libsctp1 habak libgnomevfs2 common libgromnithread0 gambas2 gb net
libplot2c2 texlive pstricks ttf gfs artemisia xserver xorg video trident
docbook xml libvorbis dev libqwt5 qt4 libidzebra 2.0 mod dom libavfilter0
nvidia current modaliases libboost date time1.40.0 libgnomevfs2 extra
foomatic filters lbreakout2 data lmms common libnb platform devel java
gambas2 gb pdf x11proto xinerama dev ttf sil gentium fp utils
xserver xorg video sis libdca0 libx86 1 screen x11proto render dev
libdate manip perl libidzebra 2.0 mod grs xml ttf gfs porson bc libdns64
libxi dev gftp text libx11 protocol perl libgps19 gconf2
python zope.interface at dosfstools libgdata google1.2 1 ed
libmono i18n west2.0 cil dbconfig common texlive latex base librpmio0
texlive metapost doc librpm0 texlive fonts recommended javahelp2
pulseaudio module x11 guile 1.8 libs libwps 0.1 1 libmagick++2 rpm common
po debconf python oauth liblualib50 autoconf libchm1 gambas2 gb sdl
ttf opensymbol libedata cal1.2 6 python apt libxnconfig9.0.5
libterm readkey perl libparse recdescent perl wireshark common
libpixman 1 dev gftp common libsqlite0 libcddb2 libslp1 groff base
python central libfftw3 3 libportmidi0 libdts dev whois libdirectfb extra
libswingx java java wrappers libdotconf1.0 libcommons cli java
xserver xorg video siliconmotion libmono microsoft7.0 cil gdebi core
libmono system messaging2.0 cil libavdevice52 libcairo2
libmono system web1.0 cil libstartup notification0 libass4 libjs prototype
ubuntu system service gnuradio sounder libapache2 mod php5
libboost thread dev clamav base xserver xorg input vmmouse libpano13 bin
libavahi glib1 subversion libumfpack5.4.0 libtag extras1 gambas2 gb image
linux source 2.6.32 libmono accessibility1.0 cil puredata
libmono webbrowser0.5 cil libmono posix2.0 cil odbcinst gambas2 gb web g++
mono runtime libvisual 0.4 0 fp units db libfontconfig1 dev libreadline java
apturl common libcln6 libsensors applet plugin0 liblapack3gf
xserver xorg video savage libogg dev libclamav6 mtools
libcommons compress java libcanberra0 libqtscript4 sql intltool debian
libmono addins0.2 cil erlang webtool fp units fv php5 gd libthai data
libgweather common dcraw kompozer data libnss3 dev xorg docs core
x11proto kb dev libswingworker java luatex libprocessui4
texlive bibtex extra x11proto randr dev python serial libsoup gnome2.4 1
libsaxon java zlib bin caps texlive generic recommended gambas2 gb xml
john data libxinerama dev libisccc60 libcap2 bin xserver xorg video tdfx
network manager pptp libmono system runtime2.0 cil pptp linux mono 2.0 devel
libavcodec52 metacity common libprocesscore4 libopenctl0 gambas2 gb pcre
x11 session utils m17n db toshset libidzebra 2.0 0 cpu checker
texlive latex recommended gambas2 runtime libc6 i386 kdesudo libfuse2
texlive font utils mono csharp shell libglibmm 2.4 1c2a libgssrpc4
libopagent1 libhd16 libxosd2 libqtscript4 xml libobparser21 mesa common dev
libgamin0 firebird2.1 common doc lib32gcc1 libpcrecpp0 libnss mdns
libnova 0.12 2 texlive latex recommended doc unixodbc erlang runtime tools
gambas2 gb xml xslt libg15render1 gambas2 gb compress bzlib2 libsvn1
libdatrie1 xtrans dev xkb data libatk1.0 dev ruby1.8 libportaudio2
libdevkit power gobject1 libalut0 vbetool latex beamer libavahi core6
libcue1 libmenu cache1 libbabl 0.0 0 libqt4 dev libxcb event1
xserver xorg video intel gputils common libmcrypt4 libjs jac fvwm icons
python pam libgegl 0.0 0 samba common idle python2.6 libgconf2 4 libffi5
libiec61883 0 libhwloc0 xinput libelf1 python gnuradio core libforms1
texlive binaries lib32asound2 libxres1 libxstream java
xserver xorg input all libcairomm 1.0 1 acpid libbinio1ldbl python scipy
erlang docbuilder libsdl image1.2 finger python gnuradio trellis
libmono i18n1.0 cil gettext hugin data libqt4 help ant php pear time
libmono oracle1.0 cil arj xbitmaps libpango1.0 common blt x11proto input dev
libnb platform11 java tipa xmms2 plugin id3v2 libvirt0 libusb dev ruby
texlive latex base doc libmono messaging2.0 cil libgp11 0 gwyddion common
default jdk libusrp2 0 libmono rabbitmq2.0 cil kde window manager libenca0
latex xcolor libjsch java icewm common libsvn java uno libs3 bsh rtkit
python tk xserver xorg video vmware libpulse browse0
python gnuradio gsm fr vocoder launchpad integration libpixman 1 0
libjetty java doc libexempi3 x11proto fixes dev python tz koffice libs
liblwres60 fckeditor mingw32 runtime libijs 0.35 xserver xorg video r128
libqt4 gui libt1 5 fp units gtk2 libgdu0 libxml commons resolver1.1 java
libpkcs11 helper1 libcobertura java libgnome2 common libaudclient2 libhal1
cvs libcurl3 linux headers 2.6.32 74 libjs scriptaculous xfonts base
libmono winforms1.0 cil libfli1 libfltk1.1 libxen3 xserver xorg input evdev
freeradius common texlive xetex libmono db2 1.0 cil ant optional kdiff3 doc
pulseaudio esound compat binfmt support amarok utils libesd0 libhttrack2
linux headers 2.6.32 74 generic fop libmikmod2 libjcharts java
libkdecorations4 libmono system data2.0 cil libglu1 mesa dev iputils arping
blcr util libedata book1.2 2 xserver xorg video vesa openssh client
libgnome vfs2.0 cil libcommons net java console terminus
libresid builder0c2a libreadline5 libmono2.0 cil erlang inviso libdrm dev
x11 xfs utils python xdg gcc 4.4 multilib libsmi2ldbl krosspython
libmono system ldap2.0 cil speech dispatcher libmono bytefx0.7.6.1 cil
libmono data tds1.0 cil libbsf java libopencascade modeling 6.3.0
libgnomevfs2 0 libqt4 multimedia gambas2 gb settings gambas2 gb compress
x11proto xext dev espeak data kbd vgabios libopenmpi1.3 mono gac
libcolamd2.7.1 libnm glib2 texlive luatex qt4 qmake libxt dev
openmpi checkpoint libyaz3 libmono sharpzip2.6 cil firebird2.1 common
libxml commons external java libcroco3 modemmanager
libmono getoptions2.0 cil libboost thread1.40.0 apport symptoms
libmono data2.0 cil libevent 1.4 2 libxext dev python cairo swig
texlive metapost gnome applets data gnuplot nox libpulse mainloop glib0
libegroupwise1.2 13 libgme0 libmono npgsql1.0 cil python gnuradio usrp
erlang mnesia libgsf 1 114 libgtop2 common librarian0 freepats
libmono ldap2.0 cil libmono messaging rabbitmq2.0 cil
libmono security1.0 cil libphp phpmailer gambas2 gb xml rpc libopenobex1
libspeexdsp1 ivy libieee1284 3 rarian compat libiptcdata0
x11proto damage dev libsox fmt ao libhdf5 serial 1.8.4 libthai0
linux headers generic libdca dev php xml htmlsax3 libart2.0 cil rsync
python dbus powermgmt base erlang public key libdbd mysql perl libidl0
gnuradio radar mono mpc libbind9 60 libntfs 3g75 libneon27 gnutls
liba52 0.7.4 ffmpeg xserver xorg video s3 nbd server libmono peapi1.0 cil
xserver xorg libvncserver0 libglib2.0 cil kstars data amarok common
mono 2.0 gac gnome terminal data libpostproc51 libkwineffects1 curl
libpoppler glib4 pax libglib2.0 dev libwv2 4 libidzebra 2.0 modules
texlive fonts recommended doc gambas2 gb net smtp pgf zlib1g dev
libdevmapper event1.02.1 lesstif2 liblzo2 2 hddtemp libmono system1.0 cil
gnuradio examples libdate calc perl libantlr java xserver xorg video nv
pm utils ntp libcairo2 dev libqt3 mt mysql xfonts 100dpi libspeechd2
esound common xserver xorg video voodoo xserver xorg video fbdev
xserver xorg input wacom python gnuradio cvsd vocoder monodoc base libcgns2
libcr0 lxmenu data xmms2 plugin alsa libmad0 dev libgconf2.0 cil samba
libpano13 1 python gnuradio libglib perl python twisted core libwildmidi0
netpbm tex4ht common liberror perl libmono sharpzip0.6 cil xinit libradius1
geoip database python simplejson erlang os mon libmono cscompmgd7.0 cil
libntlm0 libidzebra 2.0 mod grs marc liborc 0.4 0 gstreamer0.10 pulseaudio
libraw1394 11 libespeak1 libpango1.0 dev libatlas base dev libfreetype6 dev
libshout3 ttf gfs neohellenic libgsm1 xserver xorg video nouveau libdv4
libdvdnav4 fancontrol libatasmart4 build essential libservlet2.3 java
libmowgli1 libmono sqlite1.0 cil libmono sharpzip2.84 cil libxau dev
dpkg dev rpm librpmbuild0 libxmmsclient6 libboost date time1.40 dev
debconf utils nautilus data libcarp clan perl mingw32 binutils
gambas2 gb qt ext barcode fp units math idzebra 2.0 doc libfs6 libdvdread4
libmpdclient2 libmono relaxng2.0 cil libhtmlparser java fp ide ufw
libblas3gf kdebase workspace kgreet plugins stk xserver xorg video neomagic
libtext glob perl libschroedinger 1.0 0 lilypond doc libksignalplotter4
fglrx modaliases libtotem plparser17 gambas2 gb qt kde libavformat52
ttf gfs baskerville libmono microsoft build2.0 cil libslf4j java gimp
nvidia 96 modaliases libcommons daemon java libnuma1 libnfsidmap2
freeradius utils tcl8.4 openmpi bin tcl8.5 libindi0 libdc1394 22
python gnuradio qtgui libqt4 assistant ure libmono dev libkate1
pinyin database libqwtplot3d qt4 0 libcdaudio1 libfftw3 dev python gobject
libmimic0 xserver xorg input mouse python gnuradio audio alsa erlang inets
libgtop2 7 automake xmms2 core erlang ic libavifile 0.7c2 ntfsprogs
python gnuradio video sdl libkadm5clnt mit7 libgimp2.0 libswing layout java
libvisual 0.4 plugins libamd2.2.0 libgstreamer plugins base0.10 0
gambas2 gb compress zlib libplrpc perl libcap ng0 libapparmor1 libusbmuxd1
texlive base libm17n 0 libdecoration0 libgeoip1 libboost1.40 dev
libpciaccess0 libregexp java libperl5.10 liblircclient0 libgnomeui common
xz utils libgromnithread dev libmysql java libmono cecil private cil
libmono corlib1.0 cil libxxf86misc1 m17n contrib xfonts unifont
libkscreensaver5 libwebkit 1.0 2 wwwconfig common vorbis tools libibverbs1
libgnome keyring0 ibus pinyin db open phrase libxvidcore4 psutils
libisccfg60 libsidplay2 libboost serialization1.40.0 usbutils smartdimmer
erlang odbc gnome desktop data libqtgtl0 python gdbm rhino
gambas2 gb net curl libkadm5srv mit7 clamav freshclam libc ares2 libsigsegv0
erlang nox libupower glib1 liborbit2 libgnuradio core dev
libpackagekit glib2 12 libusrp0 tk8.4 libmono microsoft8.0 cil tk8.5
ttf gfs solomos libg15 1 liblua5.1 0 avahi daemon libanthy0 libzeroc ice33
libmono system web2.0 cil libxcomposite dev fp units misc libcamel1.2 14
librsvg2 2 libmono cairo1.0 cil libmodplug dev libsoundtouch1c2 libstk0c2a
libwnck common libxcb render0 dev app install data libxrender dev
xmms2 plugin vorbis libgnuradio usrp dev libgpac0.4.5 libxmmsclient glib1
libmpg123 0 sgml data libmad0 libxmlgraphics commons java libnetpbm10
libmono accessibility2.0 cil iverilog ttf gfs gazis php5 ldap
texlive doc base texlive latex extra libpq5 perl tk libtommath0 libgfortran3
xfonts mathml python support libart 2.0 2 python usrp
evolution data server common libidzebra 2.0 mod alvis librpcsecgss3 man db
libid3tag0 python pexpect libavahi compat libdnssd1 html2text fp compiler
libsox fmt ffmpeg libstroke0 libcdio cdda0 imagemagick
texlive latex extra doc lib32z1 radeontool erlang ssh erlang percept
libhamcrest java xserver xorg video sisusb xaw3dg liblucene2 java erlang ssl
libpango1.0 0 xmms2 plugin mad libgraphite3 libgnuradio qtgui dev
libgvfscommon0 php5 mysql libmono i18n west1.0 cil libxft dev
texlive pictures libx11 dev liboil0.3 libmhash2 liblrdf0 libwpg 0.1 1
libgc1c2 libaiksaurus 1.2 0c2a openjdk 6 doc libqtscript4 uitools libkdb5 4
hal info fp units fcl libqt3 mt lib32stdc++6 miscfiles
libmono bytefx0.7.6.2 cil x11proto composite dev libgnuradio usrp2 0 patch
gambas2 gb qt kdelibs data libbeansbinding java libmcs1 capplets data
samba common bin libgnome menu2 libqwtplot3d qt4 dev gambas2 gb vb
libcelt0 0 libdirac encoder0 libgtlcore0 libboost regex1.40.0 tap plugins
xserver xorg video tseng netcat traditional fuse utils
xserver xorg video radeon libxcb render0 liblua50 php5 cli libebackend1.2 0
libruby1.8 gnuradio gpio libmono system messaging1.0 cil libgnuradio usrp0
scrollkeeper liblastfm0 fp units gfx info libgtk2.0 bin libqt4 scripttools
lib32v4l 0 compizconfig backend kconfig python xkit bridge utils libisc60
libdbus 1 dev autotools dev libsox1a libcupsmime1 libnet libidn perl
watershed compiz core libxcb1 dev libimlib2 libkfontinst4 mpi default bin
libgssglue1 openjdk 6 jdk tinymce xserver xorg video cirrus
python pkg resources libgtk2.0 dev libmono posix1.0 cil
libmail sendmail perl libopenjpeg2 libbonoboui2 common fp units gtk
libgstreamer0.10 0 libcommons digester java libloudmouth1 0 perl doc
gimp data libbatik java texlive math extra libjs jquery
python egenix mxdatetime perlmagick libqtscript4 core libdirectfb dev
systemsettings libc6 dev i386 libjpeg62 dev libgruel0 min12xxw
texlive pictures doc libidzebra 2.0 dev portmap libio socket ssl perl
gambas2 gb opengl libini4j java libjson glib 1.0 0 libdbus glib 1 dev
ncurses term libjetty java nvidia 173 modaliases p7zip full libaudid3tag2
gnuradio doc mscompress libmono i18n2.0 cil libplasma applet system monitor4
libsys hostname long perl erlang parsetools libpam gnome keyring
libgdata1.2 1 texlive pstricks doc iptables libxcb render util0
libnb svnclientadapter java php5 common libmono oracle2.0 cil openbsd inetd
libjline java bcmwl modaliases openmpi common php gettext
libmono system runtime1.0 cil tex common libusb 1.0 0 lacheck
gstreamer0.10 plugins base python gnuradio usrp2 python dateutil
x11proto core dev javascript common ntfs 3g lsb release python gtk2
freeglut3 python gconf libexcalibur logkit java fp units net
xserver xorg input synaptics libdigest hmac perl gambas2 gb qt kde html
libimage exiftool perl plasma widgets workspace libgnuradio audio alsa0
gnome doc utils libgtk2.0 0 regina3 dvb apps koffice data libxdmcp dev
xserver xorg video rendition libpthread stubs0 dev libsysfs dev
pulseaudio utils libofa0 libxcursor dev python libxml2 libedataserver1.2 11
libxkbfile1 libgnomecanvas2 common libgdiplus xserver xorg video i128
libmms0 libmono winforms2.0 cil less oprofile mysql client 5.1 libmpeg3 1
libbit vector perl xpdf common libllvm2.7 texinfo libgruel dev
libasound2 plugins libjs mootools libusrp dev ttf gfs didot classic
hplip data erlang base libsoup2.4 1 hugin tools libboost filesystem1.40.0
libstdc++6 4.4 dev python pyparsing libgnomekbd common libebook1.2 9
libgtksourceview2.0 common python opengl libmail imapclient perl mono gmcs
libfaad2 mercurial common libidzebra 2.0 mod grs regx qemu common
libaudiofile0 libsmpeg0 libpng12 dev
Use 'apt-get autoremove' to remove them.
Suggested packages:
bison
The following NEW packages will be installed:
flex
0 upgraded, 1 newly installed, 0 to remove and 56 not upgraded.
Need to get 261kB of archives.
After this operation, 1,032kB of additional disk space will be used.
Get:1 http://old releases.ubuntu.com/ubuntu/ lucid/main flex 2.5.35 9 [261kB]
Fetched 261kB in 1s (204kB/s)
Selecting previously deselected package flex.
(Reading database ... (Reading database ... 5%(Reading database ... 10%(Reading database ... 15%(Reading database ... 20%(Reading database ... 25%(Reading database ... 30%(Reading database ... 35%(Reading database ... 40%(Reading database ... 45%(Reading database ... 50%(Reading database ... 55%(Reading database ... 60%(Reading database ... 65%(Reading database ... 70%(Reading database ... 75%(Reading database ... 80%(Reading database ... 85%(Reading database ... 90%(Reading database ... 95%(Reading database ... 100%(Reading database ... 233263 files and directories currently installed.)
Unpacking flex (from .../flex_2.5.35 9_amd64.deb) ...
Processing triggers for install info ...
Processing triggers for man db ...
Setting up flex (2.5.35 9) ...
root@hiox:~
Español
русский
中国