Commands tagged wildcard (4)

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Sort all running processes by their memory & CPU usage
you can also pipe it to "tail" command to show 10 most memory using processes.

List the size (in human readable form) of all sub folders from the current location
Tested on MacOS and GNU/Linux. It works in dirs containing files starting with '-'. It runs 'du' only once. It sorts according to size. It treats 1K=1000 (and not 1024)

List .log files open by a pid
Uses lsof to display the full path of ".log" files opened by a specified PID.

Remove all mail in Postfix mail queue.

Generate SSH public key from the private key

Run any GUI program remotely
$ ssh -X example.org xeyes The SSH server configuration requires: X11Forwarding yes # this is default in Debian And it's convenient too: Compression delayed

Carriage return for reprinting on the same line
The above code is just an example of printing on the same line, hit Ctrl + C to stop When using echo -ne "something\r", echo will: - print "something" - dont print a new line (-n) - interpret \r as carriage return, going back to the start of the line (-e) Remember to print some white spaces after the output if your command will print lines of different sizes, mainly if one line will be smaller than the previous Edit from reading comments: You can achieve the same effect using printf (more standardized than echo): while true; do printf "%-80s\r" "$(date)"; sleep 1; done

Size (in bytes) of all RPM packages installed
This command will output the size of all RPM packages and string them together into one enormous addition command which will be calculated by the echo $(( ))

get some information about the parent process from a given process

Partition a sequence of disk drives for LVM with fdisk
So, I'm using a CentOS VM in VirtualBox, and created four new disks in the SCSI controller. The VM created the folders: /dev/sda /dev/sdb /dev/sdc /dev/sdd Using a 'for loop' all disks are partitioned for LVM.


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