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1. 2 Editors
   1. 2.1 rxvt
   2. 2.2 sed

Better Clear Commad

Path$ javac

1. Open a cygwin terminal. (the installer probably put an icon on your desktop)
   1. Type 'echo $PATH'
   2. Takea look at the output -- this is the list of directories which will besearched for executables, and they will be searched in the orderlisted. If it looks like the WINDOWS/system32 directory will override/usr/bin (i.e. it comes earlier in the list), you will need to fixthat.
      • Fix #1: If /etc/profile is missing, copy it from /etc/defaults/etc/profile
      • Fix #2: Edit/create either /etc/profile or .bash_profile in your home directory, and add a line:
        export PATH=/usr/bin:$PATH
   3. Ifyou have Java installed and don't see a java-related directory on thePATH, you may need to add it to the PATH. You can double check if thisis needed by running 'which javac' -- this will tell you if it can find the java compiler or not.
      • Fix#1: Right click 'My Computer', select Properties, then click'Advanced', followed by 'Environment Variables', select the Path entry(probably want to do it system-wide, but you could do it for just yourown user account) and add the path to the Java bin directory (see below)
      • Fix #2: Add something like the following to either /etc/profile or .bash_profile in your home directory:
        export PATH=/cygdrive/c/Program Files/Java/jdk1.5.0_07/bin:$PATH
   4. Type 'echo $CLASSPATH' -- this is the list of directories that Java searches for its objects.
      • If you just get a blank line, that's fine.
      • If you get a series of ';' separated strings, as long as you see '.' among them, that's fine.
      • If you get a non-empty string which does not include an entry for '.', you will need to add it, using either of the previous methods (Window's Environment variables, or a bash profile override).
        (QTJava.zipis the big offender here -- QuickTime apparently 'takes over' theclasspath setting when you install its Java components, causing otherJava tools (like ours) to have issues because the current directory (.)is no longer checked for packages.)

This tips page is just to give you an idea of the scope and versatility of Cygwin/Linux. Also how you can get the best of both worlds Windows & Linuxand specifically how they can interact with Cygwin.

Getting Help

Use mount to make windows paths appear like unix paths allow tab to expand C:/ based paths

main start file

Installation

Symbolic Link

Grep

very powerful 'find' command

secure shell ssh

'ls' List file

How to open a Windows Application from shell

sed

sed cut / regexp

filter between two strings (regexp's if quoted)