Recovering my GNU/Linux system
I have made some modifications to my RHEL/Fedora/CentOS, Debian/Ubuntu operating system and now it does not restart. How can I make a recovery / rescue operation?
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gnu/linux
lftp: show hidden directories and files
Some ftp servers do not display by default hidden directories and files therefore lftp does not take care about them in certain operations, for example when trying to delete a directory that contains hidden files lftp throws the following error message: operation failed: 550 cannot delete directory: directory not empty (rm: Access failed: 550 Can't remove directory) To change this behavior.
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Passive connections in ProFTPD
Passive ftp connections are very common when set behind a proxy or firewall. In a passive ftp connection, the client sends the PASV command to the server and is the server who selects a port at random and sends it to the client. We must configure directive PassivePorts in ProFTPD.
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Listing directories, 7 practical examples
ls is a utility that list information for any file type including directories, by default (when not passed any option) ls displays the contents of the current (or specified) DIR no recursively, ordered alphabetically and ignoring the hidden files/directories.
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Rename in mass
prename is a utility developed in Perl by Larry Wall (creator of the Perl language) and improved by Robin Barker, which allows you to rename in masses. prename finds all files whose name matches a pattern specified (REGEXP). This utility is part of the perl package in Debian GNU/Linux.
Ftp behind a proxy or firewall
If you can’t connect to ftp site due by ISP provider/Network restriction then it is recommended that you use an ftp client that implements the hftp Protocol
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Error decompressing .tar.xz file
When you try to unpack a .tar.xz file you get the following error messages:
tar (child): xz: Cannot exec: No such file or directory (child) tar: Error is not recoverable: exiting now tar: Child returned status 2 tar: Error is not recoverable: exiting now
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git – export repository in read mode
Git is one of the most popular version control system due to its speed, efficiency and support to a distributed development. Today LibreByte will shown how to sharing a git repository in read mode.
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Cropping images in mass
Recently a friend told me:
I have to remove the watermark of hundreds of images, you could do it with a program like GIMP but are hundreds of images, I know that you can automate this process using some commands of the ImageMagick suite; I need your help to make the script in bash.
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Fixing ugly fonts on GNU/Linux
Some months ago when I replaced my Ubuntu 10.10 (Maverick Merkat) by Debian 6.0 (Squeeze) XFCE, on my work computer, it happened that the font rendering were very ugly, the desktop in general looked ugly then I found some interesting trick at the Arch Linux wiki, after reading: Font Configuration, I execute the following steps:
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