Share your bash aliases!

[chtorogu]

I've recently gotten to making some aliases for my Linux terminal and it does make many things easier and quicker. I'm thinking you Linux guys here must have a lot of useful ones.

 

Performance mode: alias performance="echo performance | sudo tee /sys/devices/system/cpu/cpu*/>
Power saving mode: alias powersave="echo powersave | sudo tee /sys/devices/system/cpu/cpu*/cpuf>
My second monitor off (to get freesync working): alias monoff="xrandr --output DVI-D-0 --off"
My second monitor on: alias monon="xrandr --output DVI-D-0 --right-of DisplayPort-0 --auto"
Restarting xorg: alias restartx="sudo systemctl restart display-manager"
Running apt update: alias update="sudo apt update"
Running apt upgrade: alias upgrade="sudo apt upgrade -y"
Shorten "sudo apt remove" into just "remove": alias remove="sudo apt remove"
Shorten "sudo apt install" into just "install" alias install="sudo apt install"
Show current CPU speed: alias cpuspeed="cat /proc/cpuinfo | grep Hz"
Edit bashrc: alias bashrcedit="nano ~/.bashrc"
Apply bashrc: alias bashrcapply="source ~/.bashrc"

 

Anyone else have any useful aliases to share?

[FuzzyLogic]

It's pretty basic, but here's what I've added to my .bashrc. I use Linux as my daily driver and I mostly do programming on this machine, for both university and my research job.

 

The only really interesting thing I have here is my "dim" command, which I can use to set my monitor to a lower brightness than is normally possible. Entering "dim 0.5" will set it to half brightness for example. Good for night owls like me.

 

[Eigenvektor]

Here's one that let's you sort files/directories by size. Good on a terminal only server to find where your disk space is going:

alias dusch='du -sch .[^.]* * 2>/dev/null | sort -h -r'

 

[Biohazard777]

Beside the typical stuff (like: ls show all by default), here are a few that might not be so common:

# What is my public IP
alias ipify="curl https://api64.ipify.org && echo"

# Reset terminal colors to Breath
alias reset_terminal_colors="konsoleprofile colors=Breath"

# SSH srv1
alias sshsrv1="konsoleprofile colors=Gruvbox; ssh srv1; reset_terminal_colors;"

# SSH srv2
alias sshsrv2="konsoleprofile colors=Solarized; ssh srv2; reset_terminal_colors;"

Obviously instead of srv1, srv2, and so on I put the names of those servers there.
I like having a different color scheme for each server I connect to, minimizes the chances of accidentally running a command on a wrong server. 
*This is for "Konsole" terminal emulator, works for "Yakuake" as well for me.
 

1 hour ago, dcgreen2k said:

The only really interesting thing I have here is my "dim" command, which I can use to set my monitor to a lower brightness than is normally possible.

You probably already know this (since you said lower than is normally possible),
just in case someone reads this and uses it to control brightness
man xrandr:

Quote

--brightness brightness
 Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs.  However, this is a software only modification, if your hardware has support to actually  change  the  brightness, you will probably prefer to use xbacklight.

It doesn't effect hw backlight at all, and thus should be used only when you either don't have control over the backlight or the control you do have isn't enough (like in your case).

[10leej]

I have a very sensible alias config or really bash config, which seems to impress quite a few people since I basically live in a temrinal, but that's because I like to share the .bashrc across a lot of systems I manage.

 

https://gitlab.com/10leej/dotfiles/-/blob/master/.bashrc?ref_type=heads#L68

[E-waste]

On 11/5/2023 at 12:21 AM, dcgreen2k said:

The only really interesting thing I have here is my "dim" command, which I can use to set my monitor to a lower brightness

You might want to check out

 

redshift

 

@dcgreen2kI see fluxgui

 

in your alias, is that flux gui as in https://justgetflux.com/ or something different?

 

It doesn't affect the purplish / grey-purple led glow on a black background, but it can remove a large portion (or 100%) of blue and aqua light.  The way gamma adjustments work, unless you go below 1400 Kelvin correlated color temperature (much more red than a fire: 1750-1900) you'll still see a lot of green light.

 

Green light and blue light have the same effect to delay melatonin production, up to an hour of light exposure  Once you are around the same light source for an hour, the blue light becomes twice as powerful as the green light, but you don't ever read about avoiding green light at night.

 

Harvard's website has an article about it, first published in 2014, updated more recently.

 

To mitigate the blue violet-blue glow, you can change your background color (even in a virtual terminal) to a dark brown / orange to offset or overtake the blue light emission.

 

The command for it on a vt is:

 

As root:

echo -en "\e]P0200800"

P is the color, 0 is which color.
0 black
1 red
2 green
3 doesn't change (yellow?)
4 blue
5 magenta
6 cyan
7 white

The last string of number is the html color code 00 -- FF two characters for red, green, blue

So you can change the background and change the default colors of text and default folder color of blue.

 

Another way to do this, and how I've been testing the commands above

 

setterm --background yellow

It is by default quite orange, and I think I've modified all 8 options before 0-7 but at the moment yellow isn't changing.

 

With setterm and the above commands, you can either modify the foreground and background with the default colors, or use the echo -en command to modify all colors and change 0 2 4 and 7 (black, green blue and white) to whatever you want.

 

This more complicated command also works when fullscreen comnands like top are used.

[10leej]

On 11/8/2023 at 4:35 PM, E-waste said:

Harvard's website has an article about it, first published in 2014, updated more recently.

Link?

[E-waste]

I've typed up a post all about sleep and light on another post:

 

https://linustechtips.com/topic/1534591-workplace-problems-because-of-my-chronotype/

 

[E-waste]

Do you have any commands you load just before shutdown, and again as soon as possible at startup?  I can do

 

Crtl r

 

To do a (no so good, but usable) search in bash and at least 75% of the time, find what I am looking for after a few tries of different commands, but here's one for the unbound dns server:

 

Also, how do I automate this at shutdown and startup?  I have added startup comnands in the gui, but I am using the command line runlevel at boot.

 

~/.bashrc

 

alias loadcache='cat unboundfilename.dump | sudo unbound-control load_cache'

 

That's at startup

 

alias dump='sudo unbound-control dump_cache > unboundfilename.dump

Thought of another (usually I just press the UP arrow and hit enter, password and enter again, just as fast to me.

 

alias pail='sudo pihole tail'

 

I seriously like to watch the dns requests go by when connecting a new device, with a * wildcard to initially block everything.  I then do a ctrl - c and do

 

sudo pihole blacklist domainname

 

The real question is, can I shorten "sudo pihole blacklist" to "block", hit space bar after an alias of that and add a domain name?  Could I do instead

 

block domainname

[FuzzyLogic]

On 11/8/2023 at 4:35 PM, E-waste said:

I see fluxgui

in your alias, is that flux gui as in https://justgetflux.com/ or something different?

Yes, it's f.lux. I've been using it since 2012 and it's been great for reducing blue light as you mentioned. The main problem I have with my monitors is that they're incredibly bright at night, even at their minimum supported brightness. The dim command I use has been very helpful in alleviating that issue.

[E-waste]

12 hours ago, dcgreen2k said:

Yes

Does it work?  I mean, does the gui work, and on what desktop is it compatible, because it is like they 100% gave up on Linux development for the gui since Ubuntu 10.10.  Has it since been improved, or should a developer go in and try to rework the gui code?  I guess the developers aren't too enthused with the multiple interface toolkits on Linux, and probably find it too time consuming to constantly update the interface for eaxh new desktop change.

[FuzzyLogic]

1 hour ago, E-waste said:

Does it work?  I mean, does the gui work, and on what desktop is it compatible, because it is like they 100% gave up on Linux development for the gui since Ubuntu 10.10.  Has it since been improved, or should a developer go in and try to rework the gui code?  I guess the developers aren't too enthused with the multiple interface toolkits on Linux, and probably find it too time consuming to constantly update the interface for eaxh new desktop change.

The GUI is nowhere near as polished as the Windows version, but it works. It also uses redshift as its backend instead of the original xflux, which explains why it still works today. I'm using it on PopOS 22.04 with the default Cosmic DE.