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show dd progress
if you need see progress of long dd command, enter subj on other console

force a rescan on a host of scsi devices (useful for adding partitions to vmware on the fly)

Re-read partition table on specified device without rebooting system (here /dev/sda).

Clone perms and owner group from one file to another
Copy both perms and owner group from one file to another.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

check open ports without netstat or lsof

kill all processes using a directory/file/etc
This command will kill all processes using a directory. It's quick and dirty. One may also use a -9 with kill in case regular kill doesn't work. This is useful if one needs to umount a directory.

Search through all installed packages names (on RPM systems)
You can use wildcard with rpm search but you have to do 2 things: 1. use "-a" switch (means "all") with query ("-q") switch - argument is a pattern to use while searching for package names of all installed packages 2. protect wildcards, so that shell could not eat them - escape it with backslash ("\") or enclose all pattern between apostrophes ("'"): $ rpm -qa 'co*de' As you can see above it is possible to insert wildcards into middle of the pattern. If you want, you can add "-i" or another rpm query options, "-i" will print package information for all installed packages matching pattern.

Top 10 Memory Processes
It displays the top 10 processes sorted by memory usage

Watch the progress of 'dd'
run this in another terminal, were xxxx is the process ID of the running dd process. the progress will report on the original terminal that you ran dd on


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