Commands by pascalvaucheret (10)

  • Lower PowerShell priority

    Lower PowerShell priority, so that to launch processes in the background and work normally with other applications Show Sample Output


    0
    PS> Get-WmiObject Win32_process -filter 'name = "powershell.exe"' | Foreach-Object { $_.SetPriority(16384) }
    pascalvaucheret · 2022-06-16 14:53:28 389
  • Download mp3 files linked in a RSS podcast feed

    Directly download all mp3 files of the desired podcast


    1
    curl http://radiofrance-podcast.net/podcast09/rss_14726.xml | grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*mp3" | sort -u | xargs wget
    pascalvaucheret · 2021-08-09 13:40:26 177
  • Backup with versioning


    1
    & 'C:\cwRsync_5.5.0_x86_Free\bin\rsync.exe' --force --ignore-errors --no-perms --chmod=ugo=rwX --checksum --delete --backup --backup-dir="_EVAC/$(Get-Date -Format "yyyy-MM-dd-HH-mm-ss")" --whole-file -a -v "//MyServer/MyFolder" "/cygdrive/c/Backup"
    pascalvaucheret · 2020-03-06 10:17:42 88
  • Backup with versioning

    Apart from an exact copy of your recent contents, also keep all earlier versions of files and folders that were modified or deleted. Inspired by EVACopy http://evacopy.sourceforge.net Show Sample Output


    5
    backup() { source=$1 ; rsync --relative --force --ignore-errors --no-perms --chmod=ugo=rwX --delete --backup --backup-dir=$(date +%Y%m%d-%H%M%S)_Backup --whole-file -a -v $source/ ~/Backup ; } ; backup /source_folder_to_backup
    pascalvaucheret · 2018-08-02 21:27:29 336
  • Simple Video Surveillance by email

    This takes a picture (with the web cam) every 5 minutes, and send the picture to your e-mail. Some systems support mail -a "References: " so that all video surveillance emails are grouped in a single email thread. To keep your inbox clean, it is still possible to filter and move to trash video surveillance emails (and restore these emails only if you really get robbed!) For instance with Gmail, emails sent to me+trash@gmail.com can be filtered with "Matches: DeliveredTo:me+trash@gmail.com" Show Sample Output


    2
    while true ; do fswebcam -d /dev/video0 -r 1280x1024 -F 15 - | uuencode $(date +\%Y\%m\%d\%H\%M).jpeg | mail -s "Video surveillance" $USER ; sleep 300 ; done
    pascalvaucheret · 2016-08-09 14:22:45 14
  • Read random news on the internet

    Access a random news web page on the internet. The Links browser can of course be replaced by Firefox or any modern graphical web browser.


    2
    links $( a=( $( lynx -dump -listonly "http://news.google.com" | grep -Eo "(http|https)://[a-zA-Z0-9./?=_-]*" | grep -v "google.com" | sort | uniq ) ) ; amax=${#a[@]} ; n=$(( `date '+%s'` % $amax )) ; echo ${a[n]} )
    pascalvaucheret · 2016-07-26 11:52:12 54
  • Connect to FreeWifi hotspot (France) and keep the connection active

    (In French) Connection aux hotspots FreeWifi, et maintien de la connection active


    2
    while true ; do wget --quiet --no-check-certificate --post-data 'login=my_account_number&password=my_password&submit=Valider' 'https://wifi.free.fr/Auth' -O '/dev/null' ; sleep 600; done
    pascalvaucheret · 2016-07-23 16:34:42 15
  • Sweep and download all mp3 (in French) of Rendez-vous avec X (Meet with Mr. X) of the French public radio

    Sweep and download all mp3 (in French) of "Rendez-vous avec X" (Meet with M. X) of French public radio From 1997 http://rendezvousavecmrx.free.fr/audio/mr_x_1997_01_04.mp3 To 2015 http://rendezvousavecmrx.free.fr/audio/mr_x_2015_06_20.mp3 Balaye et telecharge les episodes depuis 1997 http://rendezvousavecmrx.free.fr/audio/mr_x_1997_01_04.mp3 jusqu'en 2015 http://rendezvousavecmrx.free.fr/audio/mr_x_2015_06_20.mp3


    -1
    wget http://rendezvousavecmrx.free.fr/audio/mr_x_{1997..2015}_{01..12}_{01..31}.mp3
    pascalvaucheret · 2015-08-13 21:34:50 12
  • Periodically run a command without hangups, and send the output to your e-mail

    Run "ps -x" (process status) in the background every hour (in this example). The outputs of both "nohup" and "ps -x" are sent to the e-mail (instead of nohup.out and stdout and stderr). If you like it, replace "ps -x" by the command of your choice, replace 3600 (1 hour) by the period of your choice. You can run the command in the loop any time by killing the sleep process. For example ps -x 2925 ? S 0:00.00 sh -c unzip E.zip >/dev/null 2>&1 11288 ? O 0:00.00 unzip E.zip 25428 ? I 0:00.00 sleep 3600 14346 pts/42- I 0:00.01 bash -c while true; do ps -x | mail (...); sleep 3600; done 643 pts/66 Ss 0:00.03 -bash 14124 pts/66 O+ 0:00.00 ps -x kill 25428 You have mail in /mail/(...) Show Sample Output


    1
    nohup bash -c "while true; do ps -x | mail $USER ; sleep 3600; done" | mail $USER &
    pascalvaucheret · 2013-08-19 17:21:37 19
  • Send web page by e-mail

    This will send the web page at $u to recipient@example.com . To send the web page to oneself, recipient@example.com can be replaced by $(whoami) or $USER. The "charset" is UTF-8 here, but any alternative charset of your choice would work. `wget -O - -o /dev/null $u` may be considered instead of `curl $u` . On some systems the complete path to sendmail may be necessary, for instance /sys/pkg/libexec/sendmail/sendmail for some NetBSD.


    -1
    { u="http://twitter.com/commandlinefu"; echo "Subject: $u"; echo "Mime-Version: 1.0"; echo -e "Content-Type: text/html; charset=utf-8\n\n"; curl $u ; } | sendmail $USER
    pascalvaucheret · 2010-02-24 04:18:30 5

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back up your commandlinefu contributed commands
Use `zless` to read the content of your *rss.gz file: $ zless commandlinefu-contribs-backup-2009-08-10-07.40.39.rss.gz

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Let's make screen and ssh-agent friends
When you start screen as `ssh-agent screen`, agent will die after detatch. If you don't want to take care about files when stored agent's pid/socket/etc, you have to use this command.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Find the package that installed a command

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Get the size of all the directories in current directory (Sorted Human Readable)
This allows the output to be sorted from largest to smallest in human readable format.

Remove spaces from filenames - through a whole directory tree.
An example of zsh glob qualifiers.

Recursively grep for string and format output for vi(m)
This is a big time saver for me. I often grep source code and need to edit the findings. A single highlight of the mouse and middle mouse click (in gnome terminal) and I'm editing the exact line I just found. The color highlighting helps interpret the data.

Unite pdf files
pdfunite is a part of the poppler-utils. poppler-utils package is only 150KB. The alternative - pdftk package is 14MB! Install poppler-utils if you need simple pdf operation commands like unite, separate, info, text/html conversions

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