3.2.1.1.
Global variables
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Global variables or environment variables are available in all shells. The env or printenv commands can be used to display environment variables. These programs come with the sh-utils package.
Below is a typical output:
franky ~> printenv
CC=gcc
CDPATH=.:~:/usr/local:/usr:/
CFLAGS=-O2 -fomit-frame-pointer
COLORTERM=gnome-terminal
CXXFLAGS=-O2 -fomit-frame-pointer
DISPLAY=:0
DOMAIN=hq.xalasys.com
e=
TOR=vi
FCEDIT=vi
FIGNORE=.o:~
G_BROKEN_FILENAMES=1
GDK_USE_XFT=1
GDMSESSION=Default
GNOME_DESKTOP_SESSION_ID=Default
GTK_RC_FILES=/etc/gtk/gtkrc:/nethome/franky/.gtkrc-1.2-gnome2
GWMCOLOR=darkgreen
GWMTERM=xterm
HISTFILESIZE=5000
history_control=ignoredups
HISTSIZE=2000
HOME=/nethome/franky
HOSTNAME=octarine.hq.xalasys.com
INPUTRC=/etc/inputrc
IRCNAME=franky
JAVA_HOME=/usr/java/j2sdk1.4.0
LANG=en_US
LDFLAGS=-s
LD_LIBRARY_PATH=/usr/lib/mozilla:/usr/lib/mozilla/plugins
LESSCHARSET=latin1
LESS=-edfMQ
LESSOPEN=|/usr/bin/lesspipe.sh %s
LEX=flex
LOCAL_MACHINE=octarine
LOGNAME=franky
LS_COLORS=no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:
ex=01;32:*.cmd=01;32:*.exe=01;32:*.com=01;32:*.btm=01;32:*.bat=01;32:*.sh=01;32:*.csh=01;32:*.tar=01;31:
*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:
*.bz=01;31:*.tz=01;31:*.rpm=01;31:*.cpio=01;31:*.jpg=01;35:*.gif=01;35:*.bmp=01;35:*.xbm=01;35:*.xpm=01;35:
*.png=01;35:*.tif=01;35:
MACHINES=octarine
MAILCHECK=60
MAIL=/var/mail/franky
MANPATH=/usr/man:/usr/share/man/:/usr/local/man:/usr/X11R6/man
MEAN_MACHINES=octarine
MOZ_DIST_BIN=/usr/lib/mozilla
MOZILLA_FIVE_HOME=/usr/lib/mozilla
MOZ_PROGRAM=/usr/lib/mozilla/mozilla-bin
MTOOLS_FAT_COMPATIBILITY=1
MYMALLOC=0
NNTPPORT=119
NNTPSERVER=news
NPX_PLUGIN_PATH=/plugin/ns4plugin/:/usr/lib/netscape/plugins
OLDPWD=/nethome/franky
OS=Linux
PAGER=less
PATH=/nethome/franky/bin.Linux:/nethome/franky/bin:/usr/local/bin:/usr/local/sbin:/usr/X11R6/bin:/usr/bin:
/usr/sbin:/bin:/sbin:.
PS1=\[\033[1;44m\]franky is in \w\[\033[0m\]
PS2=More input>
PWD=/nethome/franky
SESSION_MANAGER=local/octarine.hq.xalasys.com:/tmp/.ICE-unix/22106
SHELL=/bin/bash
SHELL_LOGIN=--login
SHLVL=2
SSH_AGENT_PID=22161
SSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpass
SSH_AUTH_SOCK=/tmp/ssh-XXmhQ4fC/agent.22106
START_WM=twm
TERM=xterm
TYPE=type
USERNAME=franky
USER=franky
_=/usr/bin/printenv
VISUAL=vi
WINDOWID=20971661
XAPPLRESDIR=/nethome/franky/app-defaults
XAUTHORITY=/nethome/franky/.Xauthority
XENVIRONMENT=/nethome/franky/.Xdefaults
XFILESEARCHPATH=/usr/X11R6/lib/X11/%L/%T/%N%C%S:/usr/X11R6/lib/X11/%l/%T/%N%C%S:/usr/X11R6/lib/X11/%T/%N%C%S:
/usr/X11R6/lib/X11/%L/%T/%N%S:/usr/X11R6/lib/X11/%l/%T/%N%S:/usr/X11R6/lib/X11/%T/%N%S
XKEYSYMDB=/usr/X11R6/lib/X11/XKeysymDB
XMODIFIERS=@im=none
XTERMID=
XWINHOME=/usr/X11R6
X=X11R6
YACC=bison -y
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