Functions, Aliases, One-Liners

gako · 2015-10-24 04:30:12

Carrying on from #! forum's thread. What useful one-liners, aliases or functions do the bunsenlabbers have up their sleeves. Feel free to build and adjust on what is posted from one another.

#Open a random crunchbang forum thread

xdg-open http://crunchbang.org/forums/viewtopic.php?pid=$(echo $[ 200 + $[ RANDOM % 3000000 ]])

Works 90% of the time.
Might have to play with a bit seems to mostly pick older threads.
Good nuf* hmph.

#Open the website of an installed program

aptsite () { xdg-open $(apt-cache show $1 | grep '\<http.*\>' | awk '{print $2}') &>/dev/null || echo nope ; }

johnraff · 2015-10-24 07:45:50

Good idea!

Can I suggest a slight simplification of that handy aptsite () function?
You don't need both grep and awk to extract the url - either can do it alone:

apt-cache show "$1" |  grep -o 'http:[^ ]*' 
apt-cache show "$1" | awk '/http:/{print $2}

The time taken is about the same though...
The app name is only one word so the quotes aren't needed round "$1", but it doesn't hurt.

Snap · 2015-10-24 08:00:57

These are my current aliases. Always a work in progress borrowing ideas here and there.

.bash_aliases

alias al='cat ~/.bash_aliases'
alias xe='eval `slmenu -p ">>>" < ~/.slmenu` '
alias bre='source ~/.bashrc'
alias xre='xrdb -merge ~/.Xresources'
alias alsamixer="alsamixer -g"
alias fonts='sudo fc-cache -fv'
alias mem='sudo ps_mem.py'
alias c='clear'
alias fehb='feh --bg-scale'
alias fehbc='feh --bg-center'
alias fehbf='feh --bg-fill'
alias fehbs='feh --bg-scale'
alias preview='feh -g 1600x1050+500+200 -R .01 --zoom fill'
alias running='PS_FORMAT="user,pid,pcpu,pmem,start,args" ps axf'
alias wget='wget -c'
alias date='date "+%A, %B %d, %Y [%I:%M %P]"'
alias md='mkdir -p -v'
alias rd='rmdir -v'
alias manb='man -H'

# apt & dpkg
alias upd='sudo apt update'
alias upg='sudo apt update && sudo apt dist-upgrade'
alias ins='sudo apt install'
alias get-='sudo apt-get install --no-install-recommends'
alias reinstall='sudo apt-get install --reinstall'
alias purge='sudo apt purge'
alias apurge='sudo apt-get autoremove --purge'
alias orphans='sudo deborphan | xargs sudo apt-get -y remove --purge'
alias clean='sudo apt-get clean'
alias cleanup='sudo apt-get autoclean && sudo apt-get autoremove && sudo apt-get clean && sudo apt-get remove && orphand'
alias search='apt-cache search'
alias isearch='apt-cache --installed search'
alias policy='apt-cache policy'
alias show='apt-cache show'
alias depends='apt-cache depends'
alias held='sudo dpkg --get-selections | grep hold'
alias bugs='apt-listbugs list'

# inxi
alias inx='inxi -Fz -c6' ## filtered
alias INX='inxi -F -c6' ## not filtered
alias inxs='inxi -zv7'
alias SYS='inxi -ACDfGIpluNrsSt cm3 -x -v7 -c6' ## not filtered
alias sys='inxi -ACDfGIpluNrsSt cm3 -x -v7 -c6 -z' ## Filtered

# Search
alias where="which"
alias what="apropos"
alias apr="apropos"
alias ff="find . -type f -name"

# Navigation
alias cdls='cd $1 && ls'
alias goto='OPTIONS=$(\ls -F | grep /$); select s in $OPTIONS; do cd $PWD/$s; break;done'
alias back='cd "$OLDPWD"'
alias ..="cd .."
alias ...="cd ../.."
alias ....="cd ../../.."
alias .....="cd ../../../../"
alias ......="cd ../../../../.."
alias home='cd ~/'
alias documents='cd ~/Documents'
alias downloads='cd ~/Downloads'
alias images='cd ~/Pictures'
alias videos='cd ~/Videos'
alias music='cd ~/Music'
alias bin="cd $HOME/.local/bin"

# Safety
alias rm='rm -Iv --preserve-root'
alias mv='mv -iv'
alias cp='cp -iv'
alias ln='ln -i'

# Power
alias reboot='sudo /sbin/reboot'
alias poweroff='sudo /sbin/poweroff'
alias halt='sudo /sbin/halt'
alias shutdown='sudo /sbin/shutdown'

# List
alias ls="ls -lha"
alias la='ls -A'
alias ll='ls -l'
alias lf='ls -F --color=auto --group-directories-first'
alias big='ls -laSh | head'

# color
alias dir='dir --color=auto'
alias vdir='vdir --color=auto'
alias grep='grep --color=auto'
alias fgrep='fgrep --color=auto'
alias egrep='egrep --color=auto'

Last edited by Snap (2015-10-24 08:04:37)

gako · 2015-10-24 08:06:46

johnraff wrote:

apt-cache show "$1" |  grep -o 'http:[^ ]*' 
apt-cache show "$1" | awk '/http:/{print $2}

Nifty johnraff, and a much cleaner approach. thank you.
You're certainly right about quoting "$1" I forget this all too often.

Thinking again I didn't need the awk pipe in my original either as.. grep -o '\<http.*\>' ..seems to do the trick as well.

ohnonot · 2015-10-24 08:17:08

select choice:

alias du1='du -m --max-depth=1|sort -g|sed "s/\t./M\t/g ; s/\///g"'
alias find='find 2>/dev/null'
alias hf='history|grep'
alias mpf='/usr/bin/ls -1 | mpv --playlist=-' (*)
alias ruler='xmeasure '
alias stressme='stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout'
alias sx='exec startx'
alias xg='xgamma -gamma'

(*)
i got this from somewhere, but never actually use it, because usually "mpv *" is sufficient.

Last edited by ohnonot (2015-10-24 08:18:57)

Head_on_a_Stick · 2015-10-24 10:51:05

.zshrc from my ThinkPad:

light() { xbacklight -set $1 }
orphan() { [[ ! -n $(pacman -Qdt) ]] && echo All clear! || sudo pacman -Rns $(pacman -Qqdt) }
export EDITOR=/usr/bin/vim
export VISUAL=/usr/bin/vim
export BROWSER=/usr/bin/firefox
export SYSTEMD_EDITOR=/usr/bin/vim # doesn't bloody work -- it still loads nano! :(
alias sudo='/usr/bin/sudo'
alias su='/usr/bin/su'
alias passwd='/usr/bin/passwd'
alias mv='mv -iv'
alias rm='rm -Iv'
alias cp='cp -iv'
if [[ -z "$TMUX" ]] ;then
        ID="`tmux ls | grep -vm1 attached | cut -d: -f1`"
        if [[ -z "$ID" ]] ;then
                tmux new-session
        else
                tmux attach-session -t "$ID"
        fi
fi

brontosaurusrex · 2015-10-24 11:13:31

alias lst='ls -clhtr'

lst, list by date, newer last

du -hca --max-depth=1 "$@" | sort -h

duh, list by size, fater last

du -ak "$@" | sort -n | awk -F '\t' -v OFS='\t' '{if ($1 > 1048576) $1 = sprintf("%.1fG",$1/1048576); else if ($1 > 1024) $1 = sprintf("%.1fM",$1/1024); else $1 = sprintf("%sK",$1)} 1'

duh, mac version

Last edited by brontosaurusrex (2015-10-24 11:18:31)

Sector11 · 2015-10-24 11:50:31

Snap wrote:

These are my current aliases. Always a work in progress borrowing ideas here and there.
alias al='cat ~/.bash_aliases'

Here's one you might like since bash already knows where your alias file is and 'alias' just works.

alias al='alias | less'

OR ... (mine is in a different place):

alias al='nano ~/bin/Bash/bash_aliases'

This way it's in colour AND
it isn't listed in alpha order AND
still has my commented sections AND
if I want to edit it - I can. :)

damo · 2015-10-24 11:59:47

Apart from all the usual `ls` and `apt` aliases, here are some I use all the time:

#get usb's before using dd!
alias usb='ls -l /dev/disk/by-id/*usb* | awk {'\''print ($11)'\''} | cut -c 7-$NF'

# get xevents without being swamped by mouse movements
alias xxev='xev -g +730+10 | sed "/^MotionNotify/,/^$/d"'

# updatedb databases
## update /home
alias upd8home='sudo updatedb -v -U /home/damo -o /var/lib/mlocate/home.db --prunepaths=/home/damo/.local/share/Trash'
## update backups
alias upd8bkp='sudo updatedb -v -U /mnt/backups -o /var/lib/mlocate/backups.db'
## update /
alias upd8all='sudo updatedb -v  --prunepaths="/home/damo/.local/share/Trash /mnt/windoze /mnt/backups /mnt/data /var/spool /var/tmp /tmp"'
## update Trash
alias upd8trash='sudo updatedb -v -U /home/damo/.local/share/Trash/files -o /var/lib/mlocate/trash.db'

## locate files from mlocate databases
alias loc8home='locate -d /var/lib/mlocate/home.db'
alias loc8bkp='locate -d /var/lib/mlocate/backups.db'
alias loc8all='locate'
alias loc8trash='locate -d /var/lib/mlocate/trash.db'

...and 2 of the best ever

## search crunchbang/bunsenlabs forums with "cbs|bls <searchterm>"
alias cbs="surfraw -g google site:crunchbang.org/forums"
alias bls="surfraw -g google site:forums.bunsenlabs.org"

MAC the Bloody · 2015-10-24 17:09:08

Some aliases I find useful.

alias uu='sudo apt-fast update && sudo apt-fast dist-upgrade -y'
alias get='sudo apt-fast install -y'
alias rem='sudo apt-get autoremove'
alias cl='sudo apt-get autoclean'
alias se='apt-cache search'
alias md='mkdir'
alias sd='sudo shutdown -h now'
alias rb='sudo shutdown -r now'
alias prg='sudo apt-get purge'
alias ls='ls -F --color --group-directories-first'
alias c='clear'
alias q='exit'
alias s='sudo'
alias al='cat ~/.bash_aliases'

That last one is probably one of the most useful ones. Great for geezers with shaky memories. I also thought what sector11 posted about that was interesting. I think I'll add "aln" for editing my aliases with nano after seeing that.

Another idea that just came to me. If one has a short enough list they could put aliases in conky just like the keyboard shortcuts.

Note: My aliases for updating, upgrading, and installing software include the -y tag so that prompts are answered with yes automagically. I put this in due to the way apt-fast works and it expedites things. I am running sid but apt-listbugs is not affected by the -y and still allows for checking bugs before upgrading or installing. If it finds no bugs then things just go ahead as normal.

Last edited by MAC the Bloody (2015-10-24 17:09:38)

gako · 2015-10-24 18:44:07

Useful for checking service status without mixing the two outputs.

alias statoff='service --status-all | grep -w -'
alias staton='service --status-all | grep +'

you could run them together for ordered output
staton ; statoff

and a dmenu calculator #had this for a while, think I hijacked from arch thread.

alias dcalc='xsel -o | dmenu -p Calculate: | xargs echo | bc 2>&1 | dmenu -p Answer: | xsel -i'

Some file functions:

# Maybe cleaner approach. Also, added a backup on first line for safety sake. probably safe to remove. 
sorttofile () {
  cp $1{,.bak}; echo "$1... $1.bak"
  sleep 1s
  cat $1 | sort > tmmp && cat tmmp > $1
  rm tmmp
  cat $1
}

# copies file and appends date to name.
cpdate () {
  date=$( date +%F )
  cp $1 $1_$date
}

Head_on_a_Stick · 2015-10-25 20:26:19

List all enabled systemd .services & .sockets:

alias list='systemctl list-unit-files|grep enabled'

Useful for debugging network problems and slimming down the system.

empty@ThinkPad ~ % list
getty@.service                             enabled 
nftables.service                           enabled 
ntpd.service                               enabled 
systemd-networkd.service                   enabled 
systemd-resolved.service                   enabled 
wpa_supplicant@.service                    enabled 
systemd-networkd.socket                    enabled

shot-in-the-head · 2015-10-29 10:38:32

a function to remind you how to do stuff, you could then call this function with an alias (if you wanted to shorten the name) , or dont use an alias and just type the name of the function.
alias vsr ='vim-search-replace'

vim-search-replace() { # {{{
cat <<EOF
:s/foo/bar/g		 Change each 'foo' to 'bar' in the current line.
:%s/foo/bar/g		 Change each 'foo' to 'bar' in all lines.
:5,12s/foo/bar/g	 Change each 'foo' to 'bar' for all lines from line 5 to line 12 inclusive.
:'a,'bs/foo/bar/g	 Change each 'foo' to 'bar' for all lines from mark a to mark b inclusive.
:.,$s/foo/bar/g		 Change each 'foo' to 'bar' for all lines from the current line (.)
						to the last line ($) inclusive.
:.,+2s/foo/bar/g	 Change each 'foo' to 'bar' for the current line (.) and the two next lines (+2).
:%s/foo/bar/g		 Equivalent to :1,$s/foo/bar/g (change all lines).
:g/^baz/s/foo/bar/g	 Change each 'foo' to 'bar' in each line starting with 'baz'.
EOF
}
#============

Last edited by shot-in-the-head (2016-06-23 11:06:53)

vasa1 · 2015-11-08 14:06:18

damo wrote:

Apart from all the usual `ls` and `apt` aliases, here are some I use all the time:
...
# get xevents without being swamped by mouse movements
alias xxev='xev -g +730+10 | sed "/^MotionNotify/,/^$/d"'
...
...

If it's just for finding keycodes/keysyms, can't one instead use xev -event keyboard to reduce noise?

And if one just wants a single keycode/keysym at a time, then this may suffice:

xev -event keyboard | grep -m 1 -A 4 "KeyPress event"

and for use with the "shift" key

xev -event keyboard | grep -m 2 -A 4 "KeyPress event"

Edit: there's no need for "-event keyboard" because grep cleans up things.

Example output:

07:30 PM ~/Desktop $ xev -event keyboard | grep -m 1 -A 4 "KeyPress event"
KeyPress event, serial 28, synthetic NO, window 0x2800001,
    root 0x7e, subw 0x0, time 16360116, (609,530), root:(1293,593),
    state 0x0, keycode 34 (keysym 0x5b, bracketleft), same_screen YES,
    XLookupString gives 1 bytes: (5b) "["
    XmbLookupString gives 1 bytes: (5b) "["
07:33 PM ~/Desktop $ xev -event keyboard | grep -m 2 -A 4 "KeyPress event"
KeyPress event, serial 28, synthetic NO, window 0x2800001,
    root 0x7e, subw 0x0, time 16378626, (609,530), root:(1293,593),
    state 0x0, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
--
KeyPress event, serial 28, synthetic NO, window 0x2800001,
    root 0x7e, subw 0x0, time 16379162, (609,530), root:(1293,593),
    state 0x1, keycode 34 (keysym 0x7b, braceleft), same_screen YES,
    XLookupString gives 1 bytes: (7b) "{"
    XmbLookupString gives 1 bytes: (7b) "{"
07:33 PM ~/Desktop $

Oops! This is even briefer:

xev | awk -F'[ )]+' '/^KeyPress/ { a[NR+2] } NR in a { printf "%-3s %s\n", $5, $8 }'

from https://wiki.archlinux.org/index.php/Ex … ys#In_Xorg

Last edited by vasa1 (2015-11-09 04:52:38)

martix · 2016-05-04 08:18:57

I would like to use something like the following as root: alias dwn='cd /home/username/Downloads/'

Where do I have to create a .bash_aliases file, so I can use 'dwn' for getting to that folder as root?

damo · 2016-05-04 13:22:14

martix wrote:

I would like to use something like the following as root: alias dwn='cd /home/username/Downloads/'
Where do I have to create a .bash_aliases file, so I can use 'dwn' for getting to that folder as root?

You can put aliases in '~/bashrc', otherwise use:

~/bash_aliases

NB You will have to investigate how sudo works in that situation though. You can add the alias in the current shell on the commandline to test it out.

[damo@hydrogen ~]$ alias dwn='cd /home/damo/Downloads/'

martix · 2016-05-04 14:18:57

@damo Thank you for the answer. Indeed, it works from the command line (both for user and root) and there is also /root/bashrc, which can be used for aliases for root. It seems one has to open a new terminal and log in again as root in order to use aliases after bashrc was changed.

Edit: This is so cool! If someone puts

alias wtr='curl -4 wttr.in/bunsen'

in ~/.bash_aliases, you will get bunsen-weather in the terminal after the "wtr" weather-command!
Of course "bunsen" can be also replaced with any other city (btw strange country for bunsen...) .

Last edited by martix (2016-05-04 14:37:10)

damo · 2016-05-04 15:05:46

After editing .bashrc or .bash_aliases, to get an immediate effect for other user shells (without logging out/in) you need to do

source .bashrc

martix · 2016-05-04 15:32:21

@damo I see, good to know, cheers!

olminator · 2016-05-17 16:23:31

I always forget the commands for listing files in archives...

# list files in a tar archive
alias ltar='tar tf'
# list files in a zip archive
alias lzip='unzip -l'

This one's also pretty neat

# create a temp directory and cd into it
alias cdtmp='cd "$(mktemp -d)"'

#1 2015-10-24 04:30:12

Functions, Aliases, One-Liners

#2 2015-10-24 07:45:50

Re: Functions, Aliases, One-Liners

#3 2015-10-24 08:00:57

Re: Functions, Aliases, One-Liners

#4 2015-10-24 08:06:46

Re: Functions, Aliases, One-Liners

#5 2015-10-24 08:17:08

Re: Functions, Aliases, One-Liners

#6 2015-10-24 10:51:05

Re: Functions, Aliases, One-Liners

#7 2015-10-24 11:13:31

Re: Functions, Aliases, One-Liners

#8 2015-10-24 11:50:31

Re: Functions, Aliases, One-Liners

#9 2015-10-24 11:59:47

Re: Functions, Aliases, One-Liners

#10 2015-10-24 17:09:08

Re: Functions, Aliases, One-Liners

#11 2015-10-24 18:44:07

Re: Functions, Aliases, One-Liners

#12 2015-10-25 20:26:19

Re: Functions, Aliases, One-Liners

#13 2015-10-29 10:38:32

Re: Functions, Aliases, One-Liners

#14 2015-11-08 14:06:18

Re: Functions, Aliases, One-Liners

#15 2016-05-04 08:18:57

Re: Functions, Aliases, One-Liners

#16 2016-05-04 13:22:14

Re: Functions, Aliases, One-Liners

#17 2016-05-04 14:18:57

Re: Functions, Aliases, One-Liners

#18 2016-05-04 15:05:46

Re: Functions, Aliases, One-Liners

#19 2016-05-04 15:32:21

Re: Functions, Aliases, One-Liners

#20 2016-05-17 16:23:31

Re: Functions, Aliases, One-Liners

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