Commands by gumnos

Commands by gumnos (3)

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Monitor memory fine-grained usage (e.g. firefox)

Sometimes top/htop don't give the fine-grained detail on memory usage you might need. Sum up the exact memory types you want
This is sample output - yours may be different.
2

watch "awk '/Rss/{sum += \$2; } END{print sum, \"kB\"}' < /proc/$(pidof firefox)/smaps"

gumnos · 2015-09-19 00:36:34 5
Sort lines on clipboard

Does the same thing in environments where you have "xclip" instead of "pbpaste"/"pbpate" and "pbcopy".
This is sample output - yours may be different.
1

xclip -o -selection clipboard | sort | xclip -i -selection clipboard

gumnos · 2014-07-07 19:04:02 0
Write a shell script that removes files that contain a string

Deletes files in the current directory or its subdirectories that match "regexp" but handle directories, newlines, spaces, and other funky characters better than the original #13315. Also uses grep's "-q" to be quiet and quit at the first match, making this much faster. No need for awk either.
This is sample output - yours may be different.
3

find -type f -exec grep -q "regexp" {} \; -delete

gumnos · 2014-04-06 19:06:50 1

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total text files in current dir

remove hostname from known_hosts

pretend to be busy in office to enjoy a cup of coffee

all out

How to force a userid to log out of a Linux host, by killing all processes owned by the user, including login shells:

Move a folder and merge it with another folder

This will move a folder and merge it with another folder which may contain duplicates. Technically it's just creating hardlinks of everything in the folder, and after it's done, delete the source (with rm -r source/ ) to complete the move. This is much faster than, for example, using rsync to merge folders which would actually copy the entire contents and so for a lot of files would take much longer. This uses macutils gcp port of cp so it can be used on osx/MacOS. If using in linux or some unix where cp includes the ability to create links with -l you can just use cp instead of gcp.

Picture Renamer

jhead is a very nice tool to do all sorts of things with photographs, in a batch-oriented way. It has a specific function to rename files based on dates, and the format I used above was just an example.

A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram

cat? dd? RTFM

rsync...

Create a 100MB file for testing transfer speed

Commit command to history file immedeately after execution

This could be added to .bashrc. Background: Linux usually saves history only on clean exit of shell. If shell ends unclean, history is lost. Also numerous terminals might confuse their history. With this variable set, history is immedeately written, accessible to all other open shells.

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