Frequently Asked Questions About Linux / UNIX » Linux http://www.cyberciti.biz/faq Every answer asks a more beautiful question. Wed, 17 Mar 2010 20:28:48 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Linux / UNIX: Convert Epoch Seconds To the Current Time http://www.cyberciti.biz/faq/convert-epoch-seconds-to-the-current-time-date/ http://www.cyberciti.biz/faq/convert-epoch-seconds-to-the-current-time-date/#comments Tue, 16 Mar 2010 08:41:47 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6829 How do I convert Epoch seconds to the current time under UNIX or Linux operating systems?]]> http://www.cyberciti.biz/faq/convert-epoch-seconds-to-the-current-time-date/feed/ 0 socat: Linux / UNIX TCP Port Forwarder http://www.cyberciti.biz/faq/linux-unix-tcp-port-forwarding/ http://www.cyberciti.biz/faq/linux-unix-tcp-port-forwarding/#comments Mon, 15 Mar 2010 10:31:37 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6813 How do I configure UNIX or Linux system to act as TCP port forwarder without using firewall? How do I install socat ( SOcket CAT ) multipurpose relay for bidirectional data transfer under Linux?]]> http://www.cyberciti.biz/faq/linux-unix-tcp-port-forwarding/feed/ 2 crond: (*system*) BAD FILE MODE Error and Solution http://www.cyberciti.biz/faq/unix-linux-cron-bad-file-mode-error/ http://www.cyberciti.biz/faq/unix-linux-cron-bad-file-mode-error/#comments Sun, 14 Mar 2010 15:15:58 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6791 I'm getting this message in my /var/log/cron

Mar 12 09:20:01 server2 crond[1267]: (*system*) BAD FILE MODE (/etc/cron.d/vnstat)

How do I fix this problem under Fedora / CentO / RHEL or any Linux distro?
]]> http://www.cyberciti.biz/faq/unix-linux-cron-bad-file-mode-error/feed/ 1 Linux RAM Disk: Creating A Filesystem In RAM http://www.cyberciti.biz/faq/howto-create-linux-ram-disk-filesystem/ http://www.cyberciti.biz/faq/howto-create-linux-ram-disk-filesystem/#comments Fri, 05 Mar 2010 11:23:49 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6651 Software RAM disks use the normal RAM in main memory as if it were a partition on a hard drive rather than actually accessing the data bus normally used for secondary storage such as hard disk. How do I create and store a web cache on a RAM disk to improve the speed of loading pages under Linux operating systems?]]> http://www.cyberciti.biz/faq/howto-create-linux-ram-disk-filesystem/feed/ 14 UNIX / Linux: Explains setuid File Permission http://www.cyberciti.biz/faq/unix-bsd-linux-setuid-file/ http://www.cyberciti.biz/faq/unix-bsd-linux-setuid-file/#comments Wed, 24 Feb 2010 19:51:13 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6573 What does it mean for a file to be "setuid?" How do keep track of all setuid enabled file?]]> http://www.cyberciti.biz/faq/unix-bsd-linux-setuid-file/feed/ 0 Transfer Files From One UNIX Server To Another Server Using Windows / Linux Desktop http://www.cyberciti.biz/faq/transfer-files-from-unix-server/ http://www.cyberciti.biz/faq/transfer-files-from-unix-server/#comments Mon, 15 Feb 2010 12:00:48 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6454 How do I securely transfer files from one UNIX / Linux server to another UNIX server using Windows or Linux desktop clients without using ftp client?]]> http://www.cyberciti.biz/faq/transfer-files-from-unix-server/feed/ 9 Linux Create Software RAID 1 (Mirror) Array http://www.cyberciti.biz/faq/linux-creating-software-raid-one-arrays/ http://www.cyberciti.biz/faq/linux-creating-software-raid-one-arrays/#comments Tue, 02 Feb 2010 10:02:59 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6391 How do I create Software RAID 1 arrays on Linux systems without using GUI tools or installer options? How do I setup RAID 1 array under Linux systems?]]> http://www.cyberciti.biz/faq/linux-creating-software-raid-one-arrays/feed/ 2 HowTo: Linux Remove a PDF File Password Using Command Line Options http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/ http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/#comments Wed, 13 Jan 2010 07:25:49 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6294 I get lots of e-bills (utility, telephone, Internet, mobile, cable and so on) in a PDF format for my small business and I need to forward those to my accountant. However, all PDFs files are password protected. I don't want to share my account password with anyone to just open my bills. Evince is a PDF document viewer capable of displaying password protected files but it cannot remove the password. How do I remove a password from all PDFs under Ubuntu or any other Linux distribution in a batch mode? ]]> http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/feed/ 6 Linux Install Google Chrome Browser [ Ubuntu, Suse, Debian, Fedora ] http://www.cyberciti.biz/faq/fedora-ubuntu-debian-suse-linux-install-googlechromebrowser/ http://www.cyberciti.biz/faq/fedora-ubuntu-debian-suse-linux-install-googlechromebrowser/#comments Wed, 06 Jan 2010 08:47:34 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6248 How do I install Google Chrome browser under Linux operating systems? How do I install google-chrome-beta_current_amd64.deb or google-chrome-beta_current_x86_64.rpm file under Linux?]]> http://www.cyberciti.biz/faq/fedora-ubuntu-debian-suse-linux-install-googlechromebrowser/feed/ 5 CentOS / Redhat: Turn On SELinux Protection http://www.cyberciti.biz/faq/rhel-fedora-redhat-selinux-protection/ http://www.cyberciti.biz/faq/rhel-fedora-redhat-selinux-protection/#comments Tue, 05 Jan 2010 11:52:59 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6166 SELinux enforces the idea that programs should be limited in what files they can access and what actions they can take. However, by default it is turned off under RHEL / CentOS 5.x server? How do I turn it on?]]> http://www.cyberciti.biz/faq/rhel-fedora-redhat-selinux-protection/feed/ 2