Perl Regex - Example 1

Case: I have a file which reads like below. I need to remove the date stamp & also the "[filername: ses.exceptionShelfLog:info]:" text.

$ cat filername_exception_error | tail
Thu Jun  4 09:43:40 PDT [filername: ses.exceptionShelfLog:info]: Shelf Log information on channel 0d ESH module A shelf id 1.
Thu Jun  4 09:43:47 PDT [filername: ses.exceptionShelfLog:info]: Shelf Log information on channel 0d ESH module A shelf id 1.
Thu Jun  4 09:43:49 PDT [filername: ses.exceptionShelfLog:info]: Shelf Log information on channel 0c ESH module A shelf id 1.
Thu Jun  4 09:50:20 PDT [filername: ses.exceptionShelfLog:info]: Shelf Log information on channel 0d ESH module B shelf id 4.
Thu Jun  4 09:50:40 PDT [filername: ses.exceptionShelfLog:info]: Shelf Log information on channel 0d ESH module A shelf id 5.
Thu Jun  4 09:50:51 PDT [filername: ses.exceptionShelfLog:info]: Shelf Log information on channel 0d ESH module B shelf id 5.
Thu Jun  4 09:51:01 PDT [filername: ses.exceptionShelfLog:info]: Shelf Log information on channel 0d ESH module B shelf id 6.

The regular expression to do this is:

$ cat filername_exception_error  | perl  -pe "s/\d\d:\d\d:\d\d//g" |  perl -i  -pe "s/\[filername: ses.exceptionShelfLog:info]://g" | tail 
Thu Jun 25  PDT  Shelf Log information on channel 4d ESH module A shelf id 2.
Thu Jun 25  PDT  Shelf Log information on channel 4d ESH module A shelf id 3.
Thu Jun 25  PDT  Shelf Log information on channel 4d ESH module B shelf id 1.
Thu Jun 25  PDT  Shelf Log information on channel 4d ESH module B shelf id 2.
Thu Jun 25  PDT  Shelf Log information on channel 4d ESH module B shelf id 3.
Fri Jun 26  PDT  Shelf Log information on channel 4d ESH module B shelf id 2.
Sat Jun 27  PDT  Shelf Log information on channel 4d ESH module B shelf id 2.
Sun Jun 28  PDT  Shelf Log information on channel 4d ESH module B shelf id 2.
Mon Jun 29  PDT  Shelf Log information on channel 4d ESH module B shelf id 2.
Tue Jun 30  PDT  Shelf Log information on channel 4d ESH module B shelf id 2.