How do I test if an item is in a bash array?
Help for a simple script
Unix & Linux
How to get only the unique results without having to sort data?
$ cat data.txt aaaaaa aaaaaa cccccc aaaaaa aaaaaa bbbbbb $ cat data.txt | uniq aaaaaa cccccc aaaaaa bbbbbb $ cat data.txt | sort | uniq aaaaaa bbbbbb cccccc $ The result that I need is to display all the lines from the original file removing all the duplicates (not just the consecutive ones), while maintaining … Read more
Trying to understand the difference between “modernNeo ALL=(ALL:ALL) ALL” and “modernNeo ALL=(ALL) ALL” in the sudoers file
In the sudoers file, you can have either of the following lines
Difference between help, info and man command
I know that these command will help to get syntax and options for commands but my question is that how they differ from each other?
Ubuntu Server Continuously “goes to sleep”
I am running a web server at home using Ubuntu 11.4 (maybe? I can’t 100% recall) on an older AMD 2400+ desktop with 1 or 2 GB of RAM. Sorry I can’t recall the details 100%.
Rsync, include only certain files types excluding some directories
I want to rsync only certain file types (e.g. .py) and I want to exclude files in some directories (e.g. venv).
Where does Mac OS X come from?
Discussing with Mac owners, I got several versions of where Mac OS X comes from. It is known to have some root in BSD, but how much, and where?
How can I benchmark my HDD?
I’ve seen commands to benchmark one’s HDD such as this using dd:
Why I can’t escape spaces on a bash script?
I’m trying to escape the space char for a path in Bash, but neither using a backslash or quotes works. .sh script: ROOT=”/home/hogar/Documents/files/” FILE=${ROOT}”bdd.encrypted” DESTINATION=”/home/hogar/Ubuntu One/folder” mv ${FILE} ${DESTINATION} After execute the script (./file) this is the result: mv: target 'One/folder' is not a directory Why does the mv command split the string, and how … Read more
System lags when doing large R/W operations on external disks
I am having some issues with system-wide latency/lagging when doing large disk imaging operations on an Ubuntu 18.04 system. Here’s the system specs: