Wednesday, May 13, 2009

Stop Emacs spash screen



Put this in your ~/.emacs :

;; no splash screen
(setq inhibit-startup-message t)


You can also start emacs with -Q option to avoid the splash screen.

seems this is a debated point!

Monday, May 11, 2009

Flash plugin for FireFox on Ubuntu 8.04.1

The installation doesn't work without a minor tweak after the fact:

thushara@agni:~$ sudo ln -s /usr/lib/libssl3.so.1d /usr/lib/libssl3.so
thushara@agni:~$ sudo ln -s /usr/lib/libplds4.so.0d /usr/lib/libplds4.so
thushara@agni:~$ sudo ln -s /usr/lib/libplc4.so.0d /usr/lib/libplc4.so
thushara@agni:~$ sudo ln -s /usr/lib/libnspr4.so.0d /usr/lib/libnspr4.so
thushara@agni:~$ sudo ln -s /usr/lib/libnss3.so.1d /usr/lib/libnss3.so


how did i figure this out? - just start firefox on the command-line and watch it complain:

thushara@agni:~$ firefox
LoadPlugin: failed to initialize shared library libXt.so [libXt.so: cannot open shared object file: No such file or directory]
LoadPlugin: failed to initialize shared library libXext.so [libXext.so: cannot open shared object file: No such file or directory]
LoadPlugin: failed to initialize shared library /usr/lib/adobe-flashplugin/libflashplayer.so [libnss3.so: cannot open shared object file: No such file or directory]
LoadPlugin: failed to initialize shared library /usr/lib/adobe-flashplugin/libflashplayer.so [libnss3.so: cannot open shared object file: No such file or directory]

out of these, our problem is with the libflashplayer.so, seems like a dependent module (libnss3.so) is not being found.

so now, use ld to see the dependencies for the libflashplayer.so :

thushara@agni:~$ ld /usr/lib/adobe-flashplugin/libflashplayer.so
ld: warning: libnss3.so, needed by /usr/lib/adobe-flashplugin/libflashplayer.so, not found (try using -rpath or -rpath-link)
ld: warning: libsmime3.so, needed by /usr/lib/adobe-flashplugin/libflashplayer.so, not found (try using -rpath or -rpath-link)
ld: warning: libssl3.so, needed by /usr/lib/adobe-flashplugin/libflashplayer.so, not found (try using -rpath or -rpath-link)
ld: warning: libplds4.so, needed by /usr/lib/adobe-flashplugin/libflashplayer.so, not found (try using -rpath or -rpath-link)
ld: warning: libplc4.so, needed by /usr/lib/adobe-flashplugin/libflashplayer.so, not found (try using -rpath or -rpath-link)
ld: warning: libnspr4.so, needed by /usr/lib/adobe-flashplugin/libflashplayer.so, not found (try using -rpath or -rpath-link)
ld: warning: cannot find entry symbol _start; not setting start address
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSMessage_GetContentInfo@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `CERT_GetDefaultCertDB@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSContentInfo_GetContentTypeTag@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_ForceHandshake@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSSignedData_VerifySignerInfo@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_Initialized'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_IsInitialized@NSS_3.9.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `CERT_DecodeCertFromPackage@NSS_3.4'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSMessage_Destroy@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_OptionSet@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSContentInfo_GetContent@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_ResetHandshake@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_Read'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_AuthCertificate@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SECMOD_CloseUserDB@NSS_3.11'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `CERT_ChangeCertTrust@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_Write'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_Shutdown@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_Init'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `CERT_DestroyCertificate@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_ImportFD@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_Now'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SECMOD_OpenUserDB@NSS_3.11'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `CERT_VerifyCACertForUsage@NSS_3.6'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_ImportTCPSocket'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_Init@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_AuthCertificateHook@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_SetDomesticPolicy@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSMessage_CreateFromDER@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSMessage_GetContent@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSSignedData_SignerInfoCount@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PK11_FreeSlot@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSSignedData_ImportCerts@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_GetError'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `NSS_CMSSignedData_VerifyCertsOnly@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_Close'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_BadCertHook@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `SSL_SetURL@NSS_3.2'
/usr/lib/adobe-flashplugin/libflashplayer.so: undefined reference to `PR_SetSocketOption'


from this, we find that certain libs are missing, or are they? let's just check if they are somewhere sneaky:

thushara@agni:~$ locate libnss3.so
/usr/lib/libnss3.so.1d
thushara@agni:~$ locate libsmime3.so
/usr/lib/libsmime3.so.1d
thushara@agni:~$ locate libssl3.so
/usr/lib/libssl3.so.1d
thushara@agni:~$ locate libplds4.so
/usr/lib/libplds4.so.0d
thushara@agni:~$ locate libplc4.so
/usr/lib/libplc4.so.0d
thushara@agni:~$ locate libnspr4.so
/usr/lib/libnspr4.so.0d

thus we can just symlink our way out of this:

thushara@agni:~$ sudo ln -s /usr/lib/libssl3.so.1d /usr/lib/libssl3.so
thushara@agni:~$ sudo ln -s /usr/lib/libplds4.so.0d /usr/lib/libplds4.so
thushara@agni:~$ sudo ln -s /usr/lib/libplc4.so.0d /usr/lib/libplc4.so
thushara@agni:~$ sudo ln -s /usr/lib/libnspr4.so.0d /usr/lib/libnspr4.so
thushara@agni:~$ sudo ln -s /usr/lib/libnss3.so.1d /usr/lib/libnss3.so

hit youtube and enJoy ~