View output in console and write to file using tee - Mac OS X 10.6.4

Use tee to send output to the console and to a file:

machine:dir user$ ./some_program | tee output_file.txt

Executing the above command will display the output of some_program immediately in the console and write the same contents to output_file.txt.

I use this command mostly for diffs against svn, saves a step. Also, though I'm posting this as a Mac OS X terminal option, I first discovered this on Ubuntu 8.04 though I sure the history or this command is much older. I recall from the documentation to think of this in plumbing terms: Send your output down a pipe to a "T" essentially sending the same stream/flow to two different places.

~Fin

Recursive SVN Directory Removal - Ubuntu 9.10 Karmic

From time to time it can be handy to remove subversion references from code that is sitting on the file system. The following command will remove all '.svn' directories from the current directory on down:

user@machine:~/dev/sample1$ rm -rf `find . -type d -name .svn`

(Please note those are grave accent quotes - below the tilde on the key left of the one(1) key.)

This command should work for all flavours of Unix.

~Fin

Create a symbolic link - Ubuntu 9.10 Karmic

ln -s /path/to/real/file /path/to/non-existant/file

So you could do like:

user@machine:~/devtools/jdk$ ll
drwxr-xr-x 10 root root 4096 2010-01-12 11:11 jdk-1.6.0
user@machine:~/devtools/jdk$ ln -s jdk-1.6.0/ current
user@machine:~/devtools/jdk$ ll
lrwxrwxrwx 1 brad brad 10 2010-01-12 11:25 current -> jdk-1.6.0/
drwxr-xr-x 10 root root 4096 2010-01-12 11:11 jdk-1.6.0
user@machine:~/devtools/jdk$

~Fin