Commands tagged scanner (7)

  • Port scan a range of hosts with Netcat.

    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


    9
    for i in {21..29}; do nc -v -n -z -w 1 192.168.0.$i 443; done
    rez0r · 2009-09-25 03:31:29 3
  • PDF simplex to duplex merge

    Joins two pdf documents coming from a simplex document feed scanner. Needs pdftk >1.44 w/ shuffle.


    5
    pdftk A=odd.pdf B=even.pdf shuffle A1-end Bend-1S output duplex.pdf
    till · 2011-02-25 15:00:09 2
  • Simplest port scanner

    Very handy way to perform a host scan if you don't have nmap,ncat,nc ...or other tools installed locally. When executing a command on a /dev/tcp/$host/$port pseudo-device file, Bash opens a TCP connection to the associated socket and UDP connection when using /dev/udp/$host/$port.A simlpe way to get servers banner is to run this command "cat < /dev/tcp/localhost/25" , here you will get mail server's banner. NOTE: Bash, as packaged for Debian, does not support using the /dev/tcp and /dev/udp pseudo-device it's not enabled by default Because bash in Debian is compiled with ?disable-net-redirections. Show Sample Output


    4
    for p in {1..1023}; do(echo >/dev/tcp/localhost/$p) >/dev/null 2>&1 && echo "$p open"; done
    benyounes · 2010-04-26 18:09:22 0
  • Optimize Xsane PDFs

    Xsane produces PDFs that are too large - particularly multipage PDFs. This command compresses them. If you do not use A4, remove the -sPAPERSIZE flag.


    3
    gs -q -sPAPERSIZE=a4 -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=test.pdf multipageproject.pdf
    iain · 2009-03-24 17:14:46 1
  • Scan a document to PDF

    Adjust the --resolution and --mode as required (if these options are available for your scanner). The size options (-x, -y, -imageheight, -imagewidth) are for US letter paper. For A4, I think the command would be: scanimage -p --resolution 250 --mode Gray -x 210 -y 297 | pnmtops -imageheight 11.7 -imagewidth 8.3 | ps2pdf - output.pdf


    3
    scanimage -p --resolution 250 --mode Gray -x 215.9 -y 279.4 | pnmtops -imageheight 11 -imagewidth 8.5 | ps2pdf - output.pdf
    dbh · 2013-04-12 18:18:42 0
  • Generate a (compressed) pdf from images

    use imagemagik convert


    2
    convert -compress jpeg *.jpg mydoc.pdf
    hute37 · 2011-05-01 13:37:09 0
  • scan subnet for used IPs

    Does a ping scan on the local subnet and returns the IPs that are up Show Sample Output


    0
    nmap -T4 -sn 192.168.1.0/24
    drewbled · 2012-06-19 17:07:24 0

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Give any files that don't already have it group read permission under the current folder (recursive)
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