Commands by br3wski3 (1)

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Know which version dpkg/apt considers more recent
Compares two versions with dpkg. It is not always obvious what version dpkg/apt will consider to be more recent. Operators include the following : * These treat an empty version as earlier than any version: lt le eq ne ge gt. * These treat an empty version as later than any version: lt-nl le-nl ge-nl gt-nl. * These are provided only for compatibility with control file syntax: < > >. This command doesn't output anything. It only returns with status 0 or 1, hence the echo "y" || echo "n" to get an output.

check open ports without netstat or lsof

Find files with the same names in several directories.
cat file1 file2 file3|sort|uniq -d finds the same lines in several files, especially in files with lists of files.

strips the first field of each line where the delimiter is the first ascii character

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Copy structure
Copies a dir structure without the files in it.

List the size (in human readable form) of all sub folders from the current location

Rename files in batch

Grep log between range of minutes
Returns logs between HH:M[Mx-My], for example, between 13:40 and 13:45.

Currency Conversion
This works in Mac OS X (10.6.2) (natively comes with curl) usage: currency_convert $1(amount) $2(from_denomination) $3(to_denomination)


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