https://wiki.feggm.de/ 2026-06-07T09:23:58+00:00 https://wiki.feggm.de/ https://wiki.feggm.de/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2013-12-20T17:25:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.feggm.de/doku.php?id=snippets:bash:calculate_tendency&rev=1387560318&do=diff Calculate tendencies of weather data cat wetter.werte 13.05.2013 10:16 8,9 984,1 92,5 13.05.2013 10:17 7,5 985,3 92,6 13.05.2013 10:18 6,3 947,7 94,6 13.05.2013 10:19 9,4 832,5 95,5 tail -n70 wetter.werte | \ head -n20 | \ sed 's/,/\./g' | \ awk ' function abs(x){ return ((x < 0.0) ? -x : x) } { temperature[NR]=$3; sum_temperature+=$3; pressure[NR]=$4; sum_pressure+=$4; humidity[NR]=$5; sum_humidity+=$5 } END{ avg_temperature=sum_temperature/NR; last_temperature=t… text/html 2013-12-20T17:25:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.feggm.de/doku.php?id=snippets:bash:dos2unix&rev=1387560318&do=diff Convert line endings To convert line endings for UNIX <-> Windows/DOS: * DOS2UNIX sed 's/\r$//' < $DIR/$ORIG_FILE > $DIR/$OUTPUT_FILE * UNIX2DOS sed 's/$/\r/' < $DIR/$ORIG_FILE > $DIR/$OUTPUT_FILE text/html 2013-12-20T17:25:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.feggm.de/doku.php?id=snippets:bash:find&rev=1387560318&do=diff find examples find 10 newest files recursively find . -type f -exec stat --format '%Y :%y %n' {} \; | sort -nr | cut -d: -f2- | head text/html 2013-12-20T17:25:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.feggm.de/doku.php?id=snippets:bash:start&rev=1387560318&do=diff Bash * Calculate tendencies of weather data * Convert line endings * find examples * Calculate time-zones * VI Tricks text/html 2013-12-20T17:25:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.feggm.de/doku.php?id=snippets:bash:time-zone_calculations&rev=1387560318&do=diff Calculate time-zones Get time in London on the next Friday at 9:00: date --date='TZ="Europe/London" 09:00 next Fri' text/html 2013-12-20T17:25:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.feggm.de/doku.php?id=snippets:bash:vi&rev=1387560318&do=diff VI * Save system file without sudo: :w !sudo tee %