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mysqldump: Copy Database Using Shell Pipes

How do I use mysqldump command with Unix shell pipes?
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How do I install iptables under Redhat (RHEL) or CentOS or Fedora Linux operating systems?
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HowTo: Run Firefox From The Command Line

How do I run Firefox browser from the Linux command line (shell prompt)? How to run Firefox from command line on Linux based server?
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How do I display a list of bridges under Linux? How do I show info about the Ethernet bridge configuration in the Linux kernel?
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Recently, my desktop hard disk crashed. So I reinstalled Linux and created a new set of private RSA keys for authentication. However, two of my remote UNIX servers still uses old DSA keys. I do not remember root password for those servers. I do have backup of private and public DSA keys and currently stored in /backup/home/user/.ssh/id_dsa and /backup/home/user/.ssh/id_dsa.pub. How do I force my ssh clients to use identity file /backup/home/user/.ssh/id_dsa to get back to my remote UNIX servers?
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Start / Stop / Restart Apache Web Server Via SSH

How do I start / stop or restart Apache web sever via SSH (secure shell) under Linux or UNIX operating systems?
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Removing a Directory In Linux

How do I remove a directory in Linux using the shell prompt?
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