Let’s say we need to:
/bin/su in LinuxFor RPM (Fedora, Red Hat, CentOS):
$ rpm -q -f /bin/su coreutils-5.97-34.el5
$ rpm -V coreutils-5.97-34.el5
For DEB (Debian, Ubuntu):
$ dpkg -S /bin/su login: /bin/su
$ debsums -s -a login
Scenario:
VirtualBox version = 4.0.12
Guest OS = Win 7
Host OS = Linux Mint 9 Isadora (based on Ubuntu)
Perform these tasks on all the Win 7 local hard-disks:
Shutdown the Win 7 VM, then run this command on Mint:
$ VBoxManage modifyhd win7.vdi --compact
That freed up 5GB of space for me, a 20% reduction.
Install QPDF, then:
$ qpdf --password=? --decrypt in.pdf out.pdf
This doesn’t crack or guess the password for you. You must already know the password. It merely helps you to create a copy of the PDF without password protection.
Question: How to find out what contents on a HTTPS page is retrieved using HTTP, i.e. unencrypted in transit and thus open to sniffing?
Answer: Use Google Chrome web browser’s Developer Tools. Look under “Console” and you’ll see lines that look like this:
The page at https://www.example.com displayed insecure content from http://feeds.feedburner.com/notsecure.
What tools do you use? Share your tips…
yum update failed in RHEL (Red Hat Enterprise Linux) server 5.5 with EPEL repo added:
[root@server ~]# yum update Loaded plugins: rhnplugin, security Skipping security plugin, no data Setting up Update Process Resolving Dependencies Skipping security plugin, no data --> Running transaction check ---> Package cups.x86_64 1:1.3.7-18.el5_5.8 set to be updated ---> Package cups-libs.i386 1:1.3.7-18.el5_5.8 set to be updated ---> Package cups-libs.x86_64 1:1.3.7-18.el5_5.8 set to be updated ---> Package pam.i386 0:0.99.6.2-6.el5_5.2 set to be updated ---> Package pam.x86_64 0:0.99.6.2-6.el5_5.2 set to be updated ---> Package pam-devel.i386 0:0.99.6.2-6.el5_5.2 set to be updated ---> Package pam-devel.x86_64 0:0.99.6.2-6.el5_5.2 set to be updated ---> Package yum.noarch 0:3.2.22-26.el5_5.1 set to be updated http://mirror01.idc.hinet.net/EPEL/5/x86_64/repodata/b205b049dc386d8d09316372f16b4371cef514bb-filelists.sqlite.bz2: [Errno 14] HTTP Error 404: Not Found Trying other mirror. http://ftp.riken.jp/Linux/fedora/epel/5/x86_64/repodata/b205b049dc386d8d09316372f16b4371cef514bb-filelists.sqlite.bz2: [Errno 14] HTTP Error 404: Not Found Trying other mirror. http://mirror.yandex.ru/epel/5/x86_64/repodata/b205b049dc386d8d09316372f16b4371cef514bb-filelists.sqlite.bz2: [Errno 14] HTTP Error 404: Not Found Trying other mirror. http://ftp.kddilabs.jp/Linux/packages/fedora/epel/5/x86_64/repodata/b205b049dc386d8d09316372f16b4371cef514bb-filelists.sqlite.bz2: [Errno 14] HTTP Error 404: Not Found Trying other mirror. http://sulawesi.idrepo.or.id/epel/5/x86_64/repodata/b205b049dc386d8d09316372f16b4371cef514bb-filelists.sqlite.bz2: [Errno 14] HTTP Error 404: Not Found Trying other mirror. Error: failure: repodata/b205b049dc386d8d09316372f16b4371cef514bb-filelists.sqlite.bz2 from epel: [Errno 256] No more mirrors to try. You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest
Fixed with:
yum clean metadata yum clean dbcache yum update
How to surf the net on a Vista laptop by using the “Mobile network” connection on the Hero?
0. Install HTC Sync on Vista
1. Turn on “Mobile network” HSPA connection on Hero
2. Connect Hero to PC via USB cable. If it prompted to install a new driver but auto search for driver failed, manually point it to the “inf” file in C:\Program Files\HTC\HTC Driver\Driver Files\Vista_x86
3. On Hero: Menu > Settings > Wireless Controls > Mobile network sharing (click to turn on)
=> Skip this step if you forgot to do Step-5 previously cos it’ll auto connect
4. It may take 3-5 mins to connect. Monitor the handshake process by clicking once on the network connection icon in the system tray on the laptop (assume Vista). When you see this, the tethering is complete and successful:
Currently connected to:
<Some new network name>
Access: Local and Internet
5. When you are done tethering, turn it off on Hero:
Menu > Settings > Wireless Controls > Mobile network sharing (click to turn off)
=> It’s better to turn off to prevent accidental use while charging phone
6. Turn off “Mobile network” HSPA connection on Hero
1. Create two screen sessions
2. Ctrl+a S to split in half
3. Ctrl+a TAB to move to bottom half
4. Ctrl+a ” to select session
5. Ctrl+a Q to return to full size screen
