Para pasar a avi (xvid):
ffmpeg -i youtube.flv -ar 48000 -ac 2 youtube.avi
Para pasar a mpg:
ffmpeg -i youtube.flv -ab 56 -ar 22050 -b 500 -s 320x240 youtube.mpg
string meaning ------ ------- @reboot Run once, at startup. @yearly Run once a year, "0 0 1 1 *". @annually (same as @yearly) @monthly Run once a month, "0 0 1 * *". @weekly Run once a week, "0 0 * * 0". @daily Run once a day, "0 0 * * *". @midnight (same as @daily) @hourly Run once an hour, "0 * * * *".De: http://jeremy.zawodny.com/blog/archives/001021.html
mysqldump --add-drop-table -u dbuser -ppassword database | sed -e 's/textoBuscado/textoReemplazar/g' | /usr/bin/mysql -u localdbuser -plocaldbpassword database
w | grep load | cut -d, -f1,4 | sed -e 's/\(.*\)up.*load average:\(.*\)/\1;\2/g' | xargs echo "`date '+%m/%d/%y'`;" | tr -d ' '
ab -n100 -c5 http://www.sitio.com/No olvidar el "/" final en el URL
Usage: ab [options] [http://]hostname[:port]/path Options are: -n requests Number of requests to perform -c concurrency Number of multiple requests to make -t timelimit Seconds to max. wait for responses -p postfile File containing data to POST -T content-type Content-type header for POSTing -v verbosity How much troubleshooting info to print -w Print out results in HTML tables -i Use HEAD instead of GET -x attributes String to insert as table attributes -y attributes String to insert as tr attributes -z attributes String to insert as td or th attributes -C attribute Add cookie, eg. 'Apache=1234. (repeatable) -H attribute Add Arbitrary header line, eg. 'Accept-Encoding: gzip' Inserted after all normal header lines. (repeatable) -A attribute Add Basic WWW Authentication, the attributes are a colon separated username and password. -P attribute Add Basic Proxy Authentication, the attributes are a colon separated username and password. -X proxy:port Proxyserver and port number to use -V Print version number and exit -k Use HTTP KeepAlive feature -d Do not show percentiles served table. -S Do not show confidence estimators and warnings. -g filename Output collected data to gnuplot format file. -e filename Output CSV file with percentages served -h Display usage information (this message)
for file in *.jpg.jpg; do mv $file `echo $file | sed 's/\(.*\.\)jpg\.jpg/\1jpg/'`;done;Más info en: http://6v8.gamboni.org/Mass-renaming-with-linux-shell.html