Linux

Fedora 9

• Install flash sound support: yum install pulseaudio-libs libflashsupport
• Boot to single user mode
• Java FAQ on the Fedora wiki
• Installing VMware tools
• List of services and recommendations
• Custom Kernel
• Building kernel from source RPM
• Building kernel for PS3

Fedora 7

• Fedora FAQ
• su - change to super user

Add user:

• /sbin/adduser username
• passwd username

Add user to sudo list:

• echo 'loginname ALL=(ALL) ALL' >> /etc/sudoers Where 'loginname' is your user account. Use 'ALL=(ALL) NOPASSWD:ALL' if you don't want to require a password

Add user to existing group (precede with su -):

• usermod -G {groupname} {username}
• sudo chown -R new_owner:new_group folder Recursively change owner and group of folder
• init [number] set runmode number (5=graphical, 3=text, 1=single user)
• [ctl][alt][F1] switch to text mode
• [ctl][alt][F7] switch to graphical mode

KDE

• startkde start KDE (from ssh)
• Added xset r off to .bashrc hopefully fixing annoying problem with unwanted repeating characters when using VNC based on this conversation.
• Attempted to set up remote desktop sharing through ssh, so far not really working:

% krfb

% vncviewer localhost:5900

-Added XTEST(X11R6) to Exceed Xconfig under X Server Protocol, Extensions Tab

CygWin

• Installing minicom on cygwin:

1. Add folder: /var/lock
2. Move file minirc.dfl to /usr/local/etc
3. Fix serial port /dev/ttyS1 -> /dev/com1 ???

Unix/Linux

• Basic unix commands
• Basic unix commands
• IO-Redirection shell commands
• Linux command reference
• Emacs manual
• Vi manual
• Gawk manual
• GNU awk manual
• GNU manuals from University of Utah

Command Line

• Getting host and user names, host name
• init and runlevels
• Common Linux commands
• Common Linux commands
• history
• count lines of code in a directory http://vision-media.ca/resources/unix/counting-lines-in-a-script

find . -type f | xargs wc -l

find . -type f -name '*.c' | xargs wc -l specific file type

• mount -o loop disk1.iso [/directory] Mount an .iso file
• To get information on the server/computer:

cat /proc/cpuinfo

cat /proc/meminfo

dmesg

lspci (list pci devices)

df (hard drive information)

du -k /home/ | sort -n | tail -10 find 10 largest folders in specified directory

• id get my UID
• pkill -U [UID] Logoff user "UID"
• pgrep looks through the currently running processes and lists the process IDs which matches the selection criteria to stdout.
• ifconfig network/ip information | /sbin/ifconfig if not root
• sysctl kernel.hostname=NEW_HOSTNAME to permanantly change hostname
• service network restart restart network services
• find . -name "rc.conf" -print
• xhost +[server name, i.e. vlsi] (give permission to remote server to use local display)
• setenv DISPLAY=###.###.###.###:0.0 (set DISPLAY variable to local ip address)
• cat /var/log/messages |grep *** (Search system messages for specific word)
• service xinetd restart (Restart xinetd server)
• rpm -ivh foo-1.0-1.i386.rpm (Add a package with rpm)
• rpm -e foo (Remove a package with rpm)
• ps (processes)
• top (processes dynamic list)
• strace ./ldecod.exe -e trace=gmon.out Debugging: print system calls made by ldecod.exe during execution
• md5sum [filename] Generate md5 hash of [filename]
• ar -s or ranlib add index to archive (.a) file

Software

• cloc: utility for counting lines of code
• meld: compare and merge up to three files
• yay: yet another YUV viewer

%yay [-s <with>x<height>] <filename>.yuv

• mpeg4ip tools: toolbox for mp4, avi, mov, etc. (!!! Could only find executables for Windows !!!)

%mp4info.exe [file.mp4]

%mp4creator -extract=1 file.avi file.264 (extract track number based on info given by mp4info.exe

• gprof: gnu profiling software

%gprof [executable] gmon.out > [gprof.out]

gmon.out is generated by compiling target executable with -pg as a compiler and linker flag, then running the resulting executable normally

• cgprof: generate call-graph based on gprof data

cgprof -T ps -g [gprof.out] [gprof.ps] (output postscript file)

• Converting postscript to other format.

-Use Windows GhostScript->convert to generate a .tif (600dpi) or .pdf (720dpi) or one of several other formats

-For poster size images generate .pdf with GhostScript and open with PaintShop Pro using high dpi value, then save as .tif or other file and print with MS Publisher as poster

• egypt Create call graph from gcc's rtl dump
• links text based browser

Drivers

• Short tutorial on writing drivers in linux

Networking

• How to set dhcp hostname in linux
• Set dhcp hostname in windows xp
• Very thorough tutorial on TCP/IP and iptables, Oskar Andreasson

Utilities

yum

• Set up yum repository for skype

bluefish

• Home at openoffice, bluefish is

• Bluefish is a powerful editor targeted towards programmers and webdesigners, with many options to write websites, scripts and programming code.

cron

• crontab information, editing cron's tasks

tar/bzip

• bzip2 -cd files.tar.bz2 | tar xvf - Bzip
• tar -cf ouput.tar folder Tar a folder
• tar -czvf output.tar.gz folder Tar and gzip a folder
• tar -xzvf input.tar.gz Untar and unzip a tar-ball

poster

• poster, create multipage postscript files from postscript input

gdb

• >GDB Internals from U Utah
• cheat sheet
• Quick reference from Harvard
• x/16w $sp display 16 words starting at address of stack pointer
• display/x {long long int}__ovly_current after every halt display contents of address __ovly_current as long long int in hexidecimal format
• set spu stop-on-load on set temporary breakpoint upon entry to spu code in ppu-gdb

find

• find examples

Mail

nm

• nm --size-sort *.o > function_sizes.nm report sizes of all functions in given object files

Virtual Network Computing (VNC) Server

• VNC on Wikipedia
• TightVNC information
• vncserver :1 -geometry 1880x1160
• vncviewer localhost:# over ssh
• /etc/sysconfig/vncservers
• /sbin/service vncserver restart
• vncserver -kill :1

grep

• grep -lir "[text]" find file containing

1. find . | xargs grep whatever recursively find text starting from .

xev

• Track interface signals such as key presses and mouse movement

Bootloader

• Grub tips and tricks (USB installation)

USBNET (USBDNET)

• usbnet driver information (linux-usb.org)

-BLOB requires cdc_subset module (# modprobe cdc_subset)

• gadget driver information (linux-usb.org)
• remove linux 2.6 usb 2.0 driver? modprobe -r ehci-hcd

-apparently uhci-hcd is the usb 1.0 driver from linux 2.4

• Setting up usbnet (Fedora Core 4)
• usbnet for Windows

public key authentication

• How to set up public/private key to perform file transfers without providing password every time

scp

• Information on ssh-agent for public key authentication

rsync

• Making secure remote backups with Rsync
• rsync -avz -e ssh ~/source/ user@host:~/destination/

sed

• Tutorial
• File renaming:

ls *old|sed 's/\(.*\)\.old/mv \1.old \1.new/'|sh

TFTP

• Installing tftp on Fedora 6
• tftp instructions

Compilers

• Cross compiler for Arm information
• How to build arm-linux toolchain for ARM/XSCALE

gcc

• Online book: GNU C Compiler Internals
• Dumping intermediate formats
• The Difinitive Guide to GCC
• gcc flags
• Information on -Wl,--gc-sections linker option

XLC

• XLC references

Make

• >>Make functions, string manipulation etc.
• generic makefile on sourceforge, text here
• Make manual
• Various Make statements
• Advanced Makefile reference

Fedora Red Hat Enterprise Linux (RHEL)

• Create bootable USB drive using Fedora script
• Installing tftp on Fedora
• Fedora Core 1 Repository
• Using rpm