courier-imap + maildrop | sophisticated mail header tuning before delivery
Your keywords are maildropfilter and xfilter.
Category: script
Convert seconds into HH:MM:SS
Linux, ESXi: # date -d@1234567 -u +%H:%M:%S FreeBSD, OpenBSD # date -r1234567 -u +%H:%M:%S
Amazon S3 | s3cmd console tool
Do some setup stuff: s3cmd –configure HINTS: When you are asked for the s3 endpoint, use your hosts (canonical) address YOURHOST instead of s3.amazonaws.com When asked for DNS-style bucket+hostname:port don’t use the suggested %(bucket)s.YOURHOST. Instead specify your bucket like YOURBUCKETs.YOURHOST. Mind the ‘s’ appended to YOURBUCKET! Your credentials and settings will be stored in .s3cmd. […]
Audio files | Get length in seconds
# sox MYFILE.mp3 -n stat
ffmpeg | mixing tracks volume problem
amix parameter decreases volumes of each input track to avoid clipping of the result track. Try this to prevent this behaviour: ffmpeg -y -i payload.mp2 -i bed.mp2 -filter_complex “[0]volume=2[a];[1]volume=2[b];[a][b]amix=inputs=2:duration=shortest:dropout_transition=0” payload_plus_bed.mp2
Samba | File Names | Umlaut Characters with strange encodings
Problem: You have a lot of files with strange encoded names like: Your filesystem, transfered from older samba servers, contains files with windows-1252 encoded characters ibn their names, who won’t be displayed by samba. Solution: Use the magic convmv tool: # convmv –notest -r -f windows-1252 -t utf-8 /path/to/your/data Thank you, Bjoern JACKE!
BASH | URLENCODE
For each character in string do # IN=”\\”;printf -v OUT ‘%%%02x’ “‘$IN”; echo $OUT or # echo “this & that” | perl -MURI::Escape -ne ‘chomp;print uri_escape($_),”\n”‘
Linux | bash | script | i am running self test
Linux: # FLOCK STUFF PIDFILE=/var/run/$(basename $0) exec 100>$PIDFILE flock -n 100 || exit 1 echo $ > $PIDFILE # … your code … test -r $PIDFILE && rm -f $PIDFILE FreeBSD: Install flock Other BSD: THATSME=”$(ps wwaux | grep -w $ | grep -v grep | awk ‘{$1=$2=$3=$4=$5=$6=$7=$8=$9=$10=””;print $0}’ | sed ‘s|^\s*||’)” && ps wwaux […]
linux | find and count files per extension
# find /data/exchange -type f \( -iname “*.mov” -o -iname “*.mp4” \) -exec du -cm {} + | sort -n
bytes and bones 
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