Recent Notes
Displaying keyword search results 1 - 10
Created by voodoo on January 03, 2012 08:41:21
Last update: February 16, 2012 15:50:06
This is the command to print all regular files in the src folder but excluding all files within the .svn folders:
$ find src -name .svn -prune -o -type f -print
where -o is the or operator.
Define a shortcut:
ff ()
{
find $1 -name .svn -prune -o -...
Created by magnum on September 27, 2011 09:32:18
Last update: September 27, 2011 09:33:04
Use tcpdump to monitor traffic on a network: To print all incoming and outgoing packets on host 192.168.0.1 :
tcpdump host 192.168.0.1 To print all incoming and outgoing IP packets on host firebird : tcpdump ip host firebird To write raw packets to a file, rather than parsing and printing them out: tcpdump ip host firebird -w /tmp/firebird.pcap To listen on interface eth0 (without this, tcpdump listens on the lowest numbered, configured up interface except loopback): tcpdump -i eth0 ip Use switch -X for more verbose output: tcpdump -i eth0 ip -X host 192.168.0.1 Outgoing from 192.168.0.1 : tcpdump -i eth0 ip -X src host 192.168.0.1 Incoming to 192.168.0.1 : tcpdump -i eth0 ip -X dst host 192.168.0.1 More verbose output: tcpdump -i eth0 tcp -vvX host 192.168.0.1...
Created by freyo on August 22, 2011 15:32:23
Last update: August 22, 2011 15:32:56
Find ports for emulator devices:
$ adb devices
List of devices attached
emul...
Telnet to emulator console:
$ telnet localhost 5554
Trying 127.0.0.1...
...
Use " sms send " to send a message:
sms send 1234 'A test message'
OK
Created by freyo on August 01, 2011 16:06:40
Last update: August 03, 2011 08:32:01
To list all installed packages:
# pm list packages
To list all disabled packages:
# pm list packages -d
pm help:
# pm
usage: pm [list|path|install|uninstall]
...
Created by freyo on July 29, 2011 16:04:45
Last update: July 29, 2011 16:04:45
To start the Settings application:
# am start -n com.android.settings/.Settings
St...
To start the Browser :
# am start -n com.android.browser/.BrowserActivity...
To start the phone dialer:
# am start tel:210-385-0098
Starting: Intent { ...
Help for am command:
# am
usage: am [subcommand] [options]
...
Created by jk34 on April 19, 2011 15:42:24
Last update: April 19, 2011 15:42:24
Check the __name__ variable to see if the Python module was invoked from the command line. The line prints when the Python script is called from the command line, but doesn't print when it is imported by another Python module with import MyModule .
if __name__ == '__main__':
print 'Invoked f...
Created by freyo on April 06, 2011 14:39:10
Last update: April 06, 2011 14:39:10
Use the x509 command to print certificate information.
openssl x509 -noout -text -in cert.pem
Optionally with MD5 or SHA1 checksum:
openssl x509 -noout -text -in cert.pem -fingerprin...
Created by Dr. Xi on March 28, 2011 11:11:33
Last update: March 28, 2011 11:13:21
grep is a versatile command with many variations (grep, egrep, fgrep, then various implementations). It uses a regula expression (regex) pattern to filter input. But then there are basic and extended flavors of regex - leading to even more confusion. And, beware that there are lots of bad examples of regex in the wild... There are two critical questions to ask when you use grep: which grep implementation are you using? what is the flavor of the regex? Here are some examples for gnu grep v2.7:
# Find all numbers (no decimal point), basic regex... Use the -o flag to show only the matching part instead of the whole matching line: grep -o -E '\b[0-9]{2}\b' The good thing about the gnu grep is that it...
Created by Dr. Xi on February 28, 2011 12:29:19
Last update: February 28, 2011 12:30:40
The Unix shell passes these parameters to the shell script:
Variable Meaning
$* A single string representing all command line arguments separated by $IFS (internal field separator, usually a space)
$@ A sequence of strings representing the command line arguments.
$1,$2...$n $1 is the first argument, $2 is the second argument, and so on...
$0 The name of the script itself.
$# The number of arguments.
Example shell script ( sharg.sh ):
#!/bin/sh
echo $# arguments passed to $0: $@
...
Output for ./sharg.sh "a b c d" :
1 arguments passed to ./sharg.sh: a b c d
here ...
Output for ./sharg.sh a "b c" d :
3 arguments passed to ./sharg.sh: a b c d
here ...
Created by voodoo on July 30, 2010 14:53:33
Last update: July 30, 2010 14:54:52
The -d switch for cURL sends HTTP POST with data from the command line. To verify the data being posted, this is a CGI script that echos the data back:
#!C:/perl/bin/perl.exe ## ## echo -- echos ... Examples: POST data from command line: C:\>curl -d input1=value1^&input1=value2 http://lo... POST data from stdin (with @ before the - symbol): C:\>curl -d @- http://localhost/cgi-bin/echo.pl ... POST data from a file (with @ before the - symbol and input redirect): C:\tmp>cat data.txt abcd 1234 xyz ... For some reason, @ with file name didn't work as expected: C:\tmp>curl -d @data.txt http://localhost/cgi-bin/... One thing to notice is that cURL removes the new line characters when posting (thus the echo back is only one line instead of three). This can...
