Do we have an undo in Linux?
I renamed a few files in one batch script. Is there a way to undo the changes without having to rename them back?
Unix & Linux
Understanding directory symlinks traversals and the parent directory
Let’s say you have directories /dir1 and /dir2/linked, where the latter is a symlink to the former.
${!FOO} and zsh
${!FOO} performs a double substitution in bash, meaning it takes the (string) value of FOO and uses it as a variable name.
zsh doesn’t support this feature.
Ubuntu Service samba is masked and can’t start
i’m trying to run samba service on Ubuntu server and it gives me erros and says its masked and dead, how do i fix that ? what does cause it to be like this?
How do I know that my CPU supports 64bit operating systems under Linux?
How can I find out that my CPU supports 64bit operating systems under Linux, e.g.: Ubuntu, Fedora?
What is the best way to add a permanent route?
I need to add a route that won’t be deleted after reboot. I read these two ways of doing it :
How to display the Linux kernel command line parameters given for the current boot?
In the grub.conf configuration file I can specify command line parameters that the kernel will use, i.e.:
How do I know where to put things in linux?
Installing something in windows takes a click of a button. But every time I try to install something in linux, which is not found in APT, I get so confused.
How to pipe the list of commands displayed by of “tab complete”?
When using commands in bash I like the double tab option to display the available commands. Some commands have more possible matches than others:
parse one field from an JSON array into bash array
I have a JSON output that contains a list of objects stored in a variable. (I may not be phrasing that right)