How to install Fedora 20 on a mbr/ms-dos disk? The nogpt and noefi trick seems do not work. This is a bug in F20 installer that still believes it is in UEFI native mode even if the noefi parameter is passed. Solution: There is an updates image for the installer which fixes this issue available
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How to manually set the boot entry for Windows in grub2?
Posted onHow to manually set the boot entry for Windows in grub2? Suppose that your Windows is installed on the first partition of the first disk (hd0,1) (yes, it’s right, that is (hd0, 1) if your distribution has not modified grub2’s default behavior) in NTFS format. You can boot your Windows in grub2 by: insmod ntfs
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How to make Emacs run in command line by default?
Posted onHow to make Emacs run in command line by default? I do not want to open the X window. You have at least 2 choices. First choice: use emacs-nox and make it the default: # yum install emacs-nox # alternatives –config emacs and choose emacs-nox. Second choice: use emacs but with -nw to disable the
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How to set Internet Explorer’s Proxy in command line on Windows 7?
Posted onHow to set Internet Explorer’s Proxy in command line on Windows 7? You can use this tool: SetProxy. On Windows 7, it works still to set IE’s proxy. Note that the proxy setting is for IE only. If you need to configure the proxy for other services like Windows Update or other programs that use
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How to debug/check network-related driver information on Linux?
Posted onHow to debug/check network-related driver information on Linux? Several commands/tools that you may find usefull: Messages: dmesg grep NetworkManager /var/log/messages lshw: list hardware lshw -c network lsusb: list USB devices lsusb rfkill: enabling and disabling wireless devices rfkill unblock all rfkill event iwconfig: configure a wireless network interface iwconfig ifconfig: configure a network interface ifconfig
How to quickly find out which rpm package provides a command on Fedora Linux?
Posted onHow to quickly find out which rpm package provides a command on Fedora Linux? As an example, we want to find out which package provides the ping command. You can quickly find it out by rpm: $ rpm -qf `which ping` It will give iputils-20121221-2.fc19.x86_64 Alternatively, you can use yum: $ yum provides `which ping`
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How to upgrade Fedora 19 to Fedora 20 through the network?
Posted onHow to upgrade Fedora 19 to Fedora 20 through the network? The tool for Fedora to upgrade the distribution is FedUp. Check this page for how to upgrade Fedora 19 to Fedora 20: http://fedoraproject.org/wiki/FedUp#How_Can_I_Upgrade_My_System_with_FedUp.3F Be sure to check the bugs in Fedora 20 before the upgrading: http://fedoraproject.org/wiki/Common_F20_bugs#Upgrade_issues Generally, it contains 3 steps: Preparation # yum
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Get the number of files in a directory
Posted onHow to the number of files in a directory ls | wc -l works well for me. http://stackoverflow.com/questions/3702104/find-the-number-of-files-in-a-directory
What is the meaning of ‘@’ in Makefile?
Posted onHarry asked: What is the meaning of ‘@’ in Makefile? An example is as follows. $ cat Makefile all: @echo “For correctness test of basic get and put, run: make test;” Without ‘@’, it works well. Without @: $ make echo “For correctness test of basic get and put, run: make test;” For correctness test
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How to enable iptables on CentOS 7 / Fedora 20?
Posted oniptables is plain old good. How to enable it after I disable firewalld? First, install the iptables-services package as root: # yum install iptables-services Then, start iptables service as root: # touch /etc/sysconfig/iptables # touch /etc/sysconfig/ip6tables # systemctl start iptables # systemctl start ip6tables # systemctl enable iptables # systemctl enable ip6tables
How to totally disable firewall or iptables on Fedora 20
Posted onOur servers run inside our own cluster and no firewall is needed. How to totally disable firewall or iptables on Fedora 20? Fedora 20 uses FirewallD as the firewall service. To totally disable firewalld: # systemctl disable firewalld # systemctl stop firewalld
How to resume a printing job on HP printer if the paper runs out on Linux?
Posted onHow to resume the printing job on HP printers if the paper runs out on Linux? A tip: “lifting the cover to access the toner and putting it down without touching anything else will clear the out of paper error and continue printing” from here.
Convention of error codes on Linux and Windows
Posted onWhat’s the error code conventions on Linux and Windows? Linux and Windows use 0 to indicate that the operation is successful and an integer that is larger than 0 for some errors. Linux System Error Codes On Linux, the system error codes is defined in 2 headers which you can find on your own box:
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Multi-connection multi-part file downloading tools on Linux
Posted onIs there any good multi-connection multi-part file downloading tools on Linux? wget is great but can only make 1 connection for 1 file. Sometimes, it is too slow on some networks. I use aria2 which supportsmMulti-connection download. aria2 can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth. Really speeds
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How to get the directory path and file name from a absolute path in C on Linux
Posted onHow to get the directory path and file name from a absolute path in C on Linux? For example, with “/foo/bar/baz.txt”, it will produce: “/foo/bar/” and “baz.txt”. You can use the APIs basename and dirname to parse the file name and directory name. A piece of C code: #include <libgen.h> #include <string.h> char* local_file =
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Ghostscript reports “Unrecoverable error: stackunderflow in .setdistillerparams”
Posted onWith the command -dPDFSETTINGS=/print for ps2pdf, I got: GPL Ghostscript 9.10: Set UseCIEColor for UseDeviceIndependentColor to work properly. Unrecoverable error: stackunderflow in .setdistillerparams make: *** [pdf-print] Error 255 How to fix it? I use this workaround: ps2pdf -dColorConversionStrategy=/LeaveColorUnchanged -dPDFSETTINGS=/printer psfile.ps from this. An alternative is to use -dPDFSETTINGS=/prepress.
How to print a plain text file to printers from a terminal in Linux
Posted onHow to quickly print a plain text file to printers from a terminal in Linux? You can also use enscript: enscript – convert text files to PostScript, HTML, RTF, ANSI, and overstrikes https://www.systutorials.com/docs/linux/man/1-enscript/ enscript text-file The lp command can print a plain text file to a printer. My favorite command: cat text-file | lp -o
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How to print out text with line numbers in Linux
Posted onHow to print out a plain text file with line numbers in Linux? Use the nl command: nl text-file Find options in the nl manual.
Alternatives to goto in bash
Posted onAs we know: There is no goto statement support in bash. goto is useful for certain situations, especially for debugging. So, is there any alternative mechanisms to goto in bash? Robert Copeland gave an interesting hacking to this problem: http://bobcopeland.com/blog/2012/10/goto-in-bash/ The idea is like the self-modifying code. But the difference is to generate a piece
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How to export and import message filters of Thunderbird
Posted onI have several installation of Thunderbird under Linux to check/send emails using IMAP email servers. I use filters extensively to manage my emails. How to export and import message filters of Thunderbird so that I can synchronize the rules on several installations? About message filters in Thunderbird (More at http://kb.mozillazine.org/Filters_(Thunderbird)): Filters are account specific, there
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