All commands (14,187)
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USAGE: gate listening_port host port Creates listening socket and connects to remote device at host:port. It uses pipes for connection between two sockets. Traffic which goes through pipes is wrote to stdout. I use it for debug network scripts.
1gate() { mkfifo /tmp/sock1 /tmp/sock2 &> /dev/null && nc -p $1 -l < /tmp/sock1 | tee /tmp/sock2 & PID=$! && nc $2 $3 < /tmp/sock2 | tee /tmp/sock1; kill -KILL $PID; rm -f /tmp/sock1 /tmp/sock2 ; } -
this command limit the speed to 8 until next eject of your cdrom disc , can be usefulll when you don't want to listen the sound of your cdrom driver .
3eject -x 8 /dev/cdrom -
bchunk [-v] [-p] [-r] [-w] [-s] Show Sample Output
6bchunk IMAGE.bin IMAGE.cue IMAGE.iso -
record audio notes or meetings requires arecord and lame run mp3gain on the resulting file to increase the volume / quality ctrl-c to stop recording Show Sample Output
11arecord -q -f cd -r 44100 -c2 -t raw | lame -S -x -h -b 128 - `date +%Y%m%d%H%M`.mp3 -
Simple one-liner for scanning a range of hosts, you can also scan a range of ports with Netcat by ex.: nc -v -n -z -w 1 192.168.0.1 21-443 Useful when Nmap is not available:) Range declaration like X..X "for i in {21..29}" is only works with bash 3.0+ Show Sample Output
9for i in {21..29}; do nc -v -n -z -w 1 192.168.0.$i 443; done -
"get Hong Kong weather infomation from HK Observatory From Hong Kong Observatory wap site ;)" other one showed alot of blank lines for me Show Sample Output
-1wget -q -O - 'http://wap.weather.gov.hk/' | sed -r 's/<[^>]+>//g;/^UV/q' | tail -n4 -
From Hong Kong Observatory wap site ;) Show Sample Output
-1wget -q -O - 'http://wap.weather.gov.hk/' | sed -r 's/<[^>]+>//g;/^UV/q' | grep -v '^$' -
Uses curl to download page of membership of US Congress. Use sed to strip HTML then perl to print a line starting with two tabs (a line with a representative) Show Sample Output
-1curl "http://www.house.gov/house/MemberWWW.shtml" 2>/dev/null | sed -e :a -e 's/<[^>]*>//g;/</N;//ba' | perl -nle 's/^\t\t(.*$)/ $1/ and print;' -
Splits the input based on commas and prints it in a nice column format. This would not work for CSV rows that have "," between quotes or with newline characters. Use only simple simple csv files. Show Sample Output
18column -s, -t <tmp.csv -
3find . -name "*.txt" -exec sed -i "s/old/new/" {} \;
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Allows you to send yourself notes from the commandline and receive them via email or text message. Also lets you send pics from the web, pics from your computer, and tweets directly to twitter. All without having to log in Ever. Show Sample Output
-1lynx "futz.me/xxx hey this is a test" -
-4sed '/^$/d' file >newfile
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random(6) - random lines from a file or random numbers
3random -f <file> -
After this, just type:
beepwhenupYou need to install "beep" before this would make the beep sound. Save it in your .profile if you want to use it later WARNING: this command won't exit until it is successful. You won't be able to CONTROL+C out of it.2beepwhenup () { echo 'Enter host you want to ping:'; read PHOST; if [[ "$PHOST" == "" ]]; then exit; fi; while true; do ping -c1 -W2 $PHOST 2>&1 >/dev/null; if [[ "$?" == "0" ]]; then for j in $(seq 1 4); do beep; done; ping -c1 $PHOST; break; fi; done; } -
3find [path] [expression] -exec du -ab {} \; | awk '{total+=$0}END{print total}'
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0echo $PATH|tr : '\n'|sort|uniq -d
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How often do you make a directory (or series of directories) and then change into it to do whatever? 99% of the time that is what I do. This BASH function 'md' will make the directory path then immediately change to the new directory. By using the 'mkdir -p' switch, the intermediate directories are created as well if they do not exist. Show Sample Output
32md () { mkdir -p "$@" && cd "$@"; } -
change the *.avi to whatever you want to match, you can remove it altogether if you want to check all files.
10find -type f -name "*.avi" -print0 | xargs -0 mplayer -vo dummy -ao dummy -identify 2>/dev/null | perl -nle '/ID_LENGTH=([0-9\.]+)/ && ($t +=$1) && printf "%02d:%02d:%02d\n",$t/3600,$t/60%60,$t%60' | tail -n 1 -
The sort utility is well used, but sometimes you want a little chaos. This will randomize the lines of a text file. BTW, on OS X there is no
| sort -Roption! There is also no| shufThese are only in the newer GNU core... This is also faster than the alternate of:| awk 'BEGIN { srand() } { print rand() "\t" $0 }' | sort -n | cut -f2-Show Sample Output0cat ~/SortedFile.txt | perl -wnl -e '@f=<>; END{ foreach $i (reverse 0 .. $#f) { $r=int rand ($i+1); @f[$i, $r]=@f[$r,$i] unless ($i==$r); } chomp @f; foreach $line (@f){ print $line; }}' -
0find . -name "*.txt" | xargs sed -i "s/old/new/"
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0svn diff $* | colordiff | lv -c
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save the input into a ogg file Show Sample Output
2rec -c 2 -r 44100 -s -t wav - | oggenc -q 5 --raw --raw-chan=2 --raw-rate=44100 --raw-bits=16 - > MyLiveRecording.ogg -
2$ cdrdao read-cd --read-raw --datafile FILE_NAME.bin --device /dev/cdrom --driver generic-mmc-raw FILE_NAME.toc
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If the connection works you should see a "hello" on host A. If not: check your cabeling etc :-)
2host A: cat /proc/dev/ttyS0 host B: echo hello > /dev/ttyS0 -
The ^$ within the quotes is a regular expression: ^=beginning of line, $=end of line, with no characters between.
1grep -v "^$" filename > newfilename - ‹ First < 443 444 445 446 447 > Last ›
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