A little bit of wisdom
The RedHat / CentOS way. Title should be “recover grub boot loader really”! Boot into recovery mode from the linux rescue cd. Type: chroot /mnt/sysimage – this will make your main / partition (currently mounted under /mnt/sysimage) the / partition. Type mount and find which device is your hard disk. This could be sda or […]
This command will copy files between servers – ownership of the files changes to the user you used to login to the remote server with. This can be any user with SSH access. tar -czf – directory/ | ssh user@remotehost “tar -xzf -“
I was trying to mount a CIFS / SAMBA share on Debian GNU/Linux 7 (wheezy). I wasn’t being prompted for a password, I would simply get: mount -t cifs -o user=admin //10.1.1.10/BLAH remote/ mount: block device //10.1.1.10/BLAH is write-protected, mounting read-only mount: cannot mount block device //10.1.1.10/BLAH read-only I needed to install “cifs-utils” apt-get install […]
*UPDATED Now replaced with a simple one line command: openssl req -newkey rsa:1024 -keyout my.servername.key -nodes -x509 -days 999 -out my.servername.crt The above command will generate a self signed certificate and key (used for signing the certificate) OLD Method: Generating SSL keys for use with Apache. Two files are required to generate your own secure […]
Using .htaccess files with Apache Outside of your web directory (best in /home/httpd/ ) you need to create the file(s) (you can have more than one) that contain the user names and passwords. Step 1: This can be done thus: htpasswd /home/httpd/.sysinfo admin Note the dot (.) in front of .sysinfo !!!! (that’s a hidden […]
Forcing Duplex at startup – Linux Note: This article is rather old and remains for historical purposes only. alias eth0 e100 options e100 e100_speed_duplex=4 Further information: http://www.scyld.com/diag_index.html
Finding files and directories in Linux – alternate method Find empty directories in the current directory using find -empty find . -type d -empty Use the following command to remove all empty directories under the current directory. find . -type d -empty -exec rmdir {} \; Note: It is not recommended to remove empty directories […]
[Sed] Delete one or more lines from a file Here is how to remove one or more lines from a file. Syntax: sed ‘{[/]||[/]}d’ sed ‘{[/][,][/]d’ /…/=delimiters n = line number string = string found in in line regex = regular expression corresponding to the searched pattern addr = address of a line (number or […]
Finding files and directories in Linux. Case-insensitive file searching with the locate command It’s easy to perform a case-insensitive file search with the Linux locate command: just add the -i flag. To search my entire filesystem for files and directories that contain the string typeahead, just use this command: locate -i typeahead Case-insensitive file searching […]
Update: 06/2023 This post is rather dated now. Simply use the find command instead. find /path/to/dir -empty -type d -delete And for empty files: find /path/to/dir -empty -type f -delete Old original post. You can use program called cleanlinks. The cleanlinks program searches the directory tree descended from the current directory for symbolic links whose […]
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