Tricky: Using sed on the 3270 terminal
We're working with a virtual Suse guest named "demo1" created under z/VM 6.1. The owner changed the network settings from a static ip address to the DHCP mode. Unfortunately, there was no Domain Name...
View Articletar and ssh – make a backup
In this example we're using tar and ssh to make a backup of just a directory over the network. The directory 'sampledir/' from the node SLES11FT will be compressed and stored on the node LXSWAS01 into...
View ArticleDefine alias in z/VM: SYNONYM
Assuming you got a new CMS User you may define some aliases. Please, check first if you have the appropriate entry 'SYNONYM SYN' within your file PROFILE EXEC./*******************************//*...
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A colored bash prompt – modify it for your needs
If you're opening a bash shell it's appearing of course: the bash prompt. As I'm working with a lot of linux guests it's difficult to keep the overview as admin. If you're working with DHCP the ip...
View ArticleDIRMAINT: Password syntax check
If you're testing the new z/VM using DIRMAINT in a second level installation for example, it could be painful if the "password syntax check" is demanding an appropriate password. For a productive...
View ArticleLinux: Save the MBR
It is a good idea to save the MBR (Master Boot Record) of a Linux installation. We're going to use just the 'dd' command. First find out the start device which is in the most cases the first one. fdisk...
View ArticleGood LUKS: Add a second harddrive and encrypt it with LUKS
It's mandantory to protect sensitive data especially directing our attention to mobile devices. So every harddisk/device we're working with should be encrypted. I'm encrypting Linux usually with LUKS...
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Good LUKS: Automatically mount a second LUKS harddrive
You're inserting an already encrypted harddisk into your notebook as a second device assuming you know the password to decrypt your container . You won't enter the password for the second harddisk...
View ArticleExecute commands on the other SSI members (z/VM 6.2/6.3)
At [VMNODE] cmd [command] [option]Within the z/VM Cluster you're able to execute commands on the other SSI members. In this example the current node is 'pokdev62'. There's defined a linux guest named...
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Repairing Linux – edit files or reinstall grub (x86)
Even if you're working with Linux it could happen that a system doesn't come up again. In the most cases the problem is between the monitor and the keyboard - the user itself....... . Let's take an...
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