brock@arden:~$ gdb
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.3) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
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(gdb) a = 5
Ambiguous command "a = 5": actions, add-auto-load-safe-path, add-inferior, add-symbol-file, add-symbol-file-from-memory...
(gdb) set a = 5
Ambiguous set command "a = 5": ada, agent, annotate, architecture, args, auto-load, auto-load-scripts, auto-solib-add.
(gdb) quit
brock@arden:~$ cd ~/csci235
brock@arden:~/csci235$ cd notes
brock@arden:~/csci235/notes$ ls
Binary.html    CvsJava1.html~  Elementary.html   Lect1.html~  oLect2.html~    setup.txt
Binary.html~   CvsJava.txt     Elementary.html~  Lect2.html~  references.txt
CvsJava1.html  CvsJava.txt~    Lect1.html        oLect2.html  setfacl
brock@arden:~/csci235/notes$
brock@arden:~/csci235/notes$ CFLAGS=-std=ansi -Wpedantic
-Wpedantic: command not found
brock@arden:~/csci235/notes$ export CFLAGS=-std=ansi -Wpedantic
bash: export: `-Wpedantic': not a valid identifier
brock@arden:~/csci235/notes$ export CFLAGS="-std=ansi -Wpedantic"
brock@arden:~/csci235/notes$ echo $CFLAGS
-std=ansi -Wpedantic
brock@arden:~/csci235/notes$ gcc gdb1.c
gdb1.c:6:13: error: ‘NUMMUM’ undeclared here (not in a function)
 int numbers[NUMMUM] ;
             ^
gdb1.c: In function ‘main’:
gdb1.c:9:3: error: ‘for’ loop initial declarations are only allowed in C99 mode
   for (int i=0; i< NUMMUM; ++i) {
   ^
gdb1.c:9:3: note: use option -std=c99 or -std=gnu99 to compile your code
brock@arden:~/csci235/notes$ export CFLAGS="-std=c99 -Wpedantic"
brock@arden:~/csci235/notes$ gcc gdb1.c
gdb1.c:6:13: error: ‘NUMMUM’ undeclared here (not in a function)
 int numbers[NUMMUM] ;
             ^
gdb1.c: In function ‘main’:
gdb1.c:9:3: error: ‘for’ loop initial declarations are only allowed in C99 mode
   for (int i=0; i< NUMMUM; ++i) {
   ^
gdb1.c:9:3: note: use option -std=c99 or -std=gnu99 to compile your code
brock@arden:~/csci235/notes$ echo $CFLAGS
-std=c99 -Wpedantic
brock@arden:~/csci235/notes$ gcc $CFLAGS gdb1.c
gdb1.c:6:13: error: ‘NUMMUM’ undeclared here (not in a function)
 int numbers[NUMMUM] ;
             ^
brock@arden:~/csci235/notes$ echo $CFLAGS
-std=c99 -Wpedantic
brock@arden:~/csci235/notes$ export -p
declare -x CFLAGS="-std=c99 -Wpedantic"
declare -x COLUMNS="94"
declare -x COMP_WORDBREAKS=" 	
\"'><;|&(:"
declare -x EMACS="t"
declare -x HOME="/home/brock"
declare -x INSIDE_EMACS="24.3.1,comint"
declare -x KRB5CCNAME="FILE:/tmp/krb5cc_10000_pvGVU4"
declare -x LANG="en_US.UTF-8"
declare -x LESSCLOSE="/usr/bin/lesspipe %s %s"
declare -x LESSOPEN="| /usr/bin/lesspipe %s"
declare -x LOGNAME="brock"
declare -x LS_COLORS=""
declare -x MAIL="/var/mail/brock"
declare -x MODELSIM="/home/brock/modelsim.ini"
declare -x OLDPWD="/home/brock/csci235"
declare -x PATH="/home/brock/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
declare -x PWD="/home/brock/csci235/notes"
declare -x QT_QPA_PLATFORMTHEME="appmenu-qt5"
declare -x SHELL="/bin/bash"
declare -x SHLVL="2"
declare -x SSH_CLIENT="68.189.168.48 52005 22"
declare -x SSH_CONNECTION="68.189.168.48 52005 152.18.69.32 22"
declare -x SSH_TTY="/dev/pts/12"
declare -x TERM="dumb"
declare -x TERMCAP=""
declare -x USER="brock"
brock@arden:~/csci235/notes$ alias mygcc gcc -std=c99 -Wpedantic
bash: alias: mygcc: not found
bash: alias: gcc: not found
bash: alias: -Wpedantic: not found
brock@arden:~/csci235/notes$ alias mygcc "gcc -std=c99 -Wpedantic"
bash: alias: mygcc: not found
bash: alias: `gcc -std': invalid alias name
brock@arden:~/csci235/notes$ alias mygcc="gcc -std=c99 -Wpedantic"
brock@arden:~/csci235/notes$ mygcc
gcc: fatal error: no input files
compilation terminated.
brock@arden:~/csci235/notes$ mygcc glib1.c
gcc: error: glib1.c: No such file or directory
gcc: fatal error: no input files
compilation terminated.
brock@arden:~/csci235/notes$ ls
Binary.html    CvsJava1.html~  Elementary.html   gdb1.c~      Lect2.html~   references.txt
Binary.html~   CvsJava.txt     Elementary.html~  Lect1.html   oLect2.html   setfacl
CvsJava1.html  CvsJava.txt~    gdb1.c            Lect1.html~  oLect2.html~  setup.txt
brock@arden:~/csci235/notes$ mygcc gdb1.c
gdb1.c:6:13: error: ‘NUMMUM’ undeclared here (not in a function)
 int numbers[NUMMUM] ;
             ^
brock@arden:~/csci235/notes$ 
brock@arden:~/csci235/notes$ 
brock@arden:~/csci235/notes$ 
brock@arden:~/csci235/notes$