using cat with grep – why?

2020-01-06 0 min read Bash

Get the git url of current repo in clipboard

2019-12-30 1 min read Bash Learning

Lot of times, I just want to copy the git url to clipboard. This is so common in my flow of work that I created an alias for it. Here it is:

alias git-url="cat .git/config|awk '/url/ {print $3}'|xclip -i -selection clipboard"

Script to try various themes from kitty terminal

2019-12-16 1 min read Bash Learning

Here is the script. Very simple yet very useful script.

#!/bin/bash - 
#===============================================================================
#
#          FILE: kitty-theme.sh
# 
#         USAGE: ./kitty-theme.sh 
# 
#   DESCRIPTION: 
# 
#       OPTIONS: ---
#  REQUIREMENTS: ---
#          BUGS: ---
#         NOTES: ---
#        AUTHOR: Amit Agarwal (aka),
#  ORGANIZATION: Individual
#       CREATED: 12/06/2019 10:15
# Last modified: Fri Dec 06, 2019  10:41AM
#      REVISION:  ---
#===============================================================================

set -o nounset                              # Treat unset variables as an error

FOLDER="/git/terminal.sexy/dist/schemes"  ### This is git folder where you have terminal.sexy cloned

if [[ ! -d $FOLDER ]]
then
    cd $FOLDER/../../../
    git clone https://github.com/stayradiated/terminal.sexy

fi

cd $FOLDER
tmp=$(mktemp /tmp/color-XXXXXXXX)
echo $tmp
files=$(find . -type f -name \*json)
for line in $(echo ${files[*]})
do
    echo "Processing $line"
    >$tmp
    echo "# From $line.. processed by Amit Agarwal script" >> $tmp
    sed -n -e '/color/,/\],/ p' $line | sed -e 1d -e '$d'| \
        sed 's/[",]//g'|awk '{count++; print "color"count"\t "$1}' >> $tmp
    grep ground $line |sed 's/^ *//' |sed 's/[":,]//g' >> $tmp

    kitty @ set-colors -a $tmp

    ls --color=auto ~
    read -p "If you like the theme, just press l ::" test
    if [[ $test == "l" ]]
    then
        rm -f ~/.config/kitty/theme.conf
        cp $tmp ~/.config/kitty/theme.conf
    fi
done
rm -f $tmp

i3 – show mapped hotkeys

2019-12-02 1 min read Learning

Here is a simple script that can show you the hotkeys bound in ~/.config/i3/config :

#!/bin/bash - 
#===============================================================================
#
#          FILE: i3-showkeys.sh
# 
#         USAGE: ./i3-showkeys.sh 
# 
#   DESCRIPTION: 
# 
#       OPTIONS: ---
#  REQUIREMENTS: ---
#          BUGS: ---
#         NOTES: ---
#        AUTHOR: Amit Agarwal (aka)
#  ORGANIZATION: Individual
#       CREATED: 11/26/2019 14:22
# Last modified: Tue Nov 26, 2019  02:43PM
#      REVISION:  ---
#===============================================================================

set -o nounset                              # Treat unset variables as an error


> /tmp/keys
cd ~/.config/i3
grep '^bindsym $mod' config|grep -v '^#'|grep -v 'move container to'|grep -v 'workspace $ws'|sed 's/bindsym //'|grep -v '='|while read key line
do
    printf "%20s\t?\t%s\n" "$key" "$line"  >> /tmp/keys
done

xterm -e "cat /tmp/keys; read -p 'press any key to continue'"
rm -f /tmp/keys

And once this is done, you can bind the script in i3 config like this:

rofi menu with icons

2019-10-21 1 min read Linux

Here is a quick command to show menu (applications) in simplistic windows managers with icons.

rofi -modi drun -show drun -show-icons

scan your network with bash IP scan script

2019-10-10 1 min read Bash

Here is the youtbe video that will walk you through bash script.

ssh trick – with bastion host

2019-09-30 1 min read Uncategorized

Lot of times, you have to ssh to a server with bastion host. If you dont know what is bastion host then see this:

Now, in such cases, either you add an entry in “~/.ssh/config

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