The shell one line script below will:
1. Find all files below current dir
2. Rename the file with download Source and date range as part of the new file name
3. Renamed file will stay at current location (e.g. file “./path/to/dir/crappyname” becomes “./path/to/dir/DC.Circuit-2006.06.02-2006.07.01.txt”)
With User Private Groups, umask of 002 or 007 makes more sense than the traditional umask of 022 when multiple users are working with shared files. Libpam-umask is handy for overriding the default umask setting.
Starting with Debian Lenny, libpam-umask is part of libpam-modules (which was auto installed on every Debian Lenny setup I’ve done so far), so just need to add the following to “/etc/pam.d/common-session”:
session optional pam_umask.so umask=002
To trim a video clip, mencoder and ffmpeg expect a start time in hh:mm:ss, but instead of end time, want duration:
$ mencoder -ss 00:02:55 -endpos 00:07:15 -oac copy -ovc copy in.avi -o out.avi $ ffmpeg -ss 00:02:55 -t 00:07:15 -vcodec copy -acodec copy -i in.avi out.avi
Video players make it easy to identify start/stop times, but difficult to figure out duration, so I wrote a little shell script that will calculate duration from start/stop times.
Usage example:
$ calc-duration 00:02:55 00:10:10 Start: 00 hrs 02 min 55 sec Stop: 00 hrs 10 min 10 sec +----------------------+ | duration is 00:07:15 | +----------------------+
Display all lines from file except lines between two lines matching a pattern:
1 | sed '/10\/02\/1992/,/01\/02\/2001/d' input.txt |
Display lines between two lines matching a pattern:
1 | sed -n '/10\/02\/1992/,/01\/02\/2001/p' input.txt |