May | 2019 | UnixDude

Disable Energy Star features on monitors

Posted by phatdee on May 31, 2019

Posted in: Uncategorized. Leave a Comment

I have no idea how or why this started happening however my monitors would go black after 15 seconds of idle.Â No power settings or screensavers were causing it, nor did I see any helpful logs to help troubleshoot.Â However somewhere/how the Energy Star features of my monitor got enabled and literally after 15 seconds of idle time the monitors would go black..

Simple fix:

$ sudo xset -dpms

1	$ sudo xset -dpms

This fixed the issue not only for the current logged in session but also after a reboot.

Passing arguments in bash scripts.

Posted by phatdee on May 14, 2019

Posted in: Bash. Tagged: args, bash, env. Leave a Comment

$# : Number of arguments passed via script

$0 : Name of the script

$@ : Names of arguments passed to the script at execution

$$ : Process ID associated with script

$OSTYPE : What’s the OS type?

$TERM :Â What’s term is being used?

$USER : What’s the username that executed the script?

$HOSTNAME : What’s the hostname of the box that ran the script?

$LOGNAME :Â What was the login username?

$LINENO : Current line # of the script

$RANDOM : Random #

$BASH_SOURCE :Â What’s the bash source?

Example script:

#! /bin/bash

echo "Number of arguments passed via script: " $#
echo "Name of the Script: " $0
echo "Names of arguments passed via the script: " $@
echo "Whats the process ID associated with this script: " $$
echo "What was the username that started this script: " $USER
echo "What was the hostname of the box that ran this script: " $HOSTNAME
echo "The number of seconds since the script was started: " $SECONDS
echo "Random number, please: " $RANDOM
echo "Whats the current line # on this script: " $LINENO
echo "What is my bash source? " $BASH_SOURCE
echo "Whats the login name? " $LOGNAME
echo "Whats my term? " $TERM
echo "Whats the OS type? " $OSTYPE

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#! /bin/bash

echo "Number of arguments passed via script: " $#

echo "Name of the Script: " $0

echo "Names of arguments passed via the script: " $@

echo "Whats the process ID associated with this script: " $$

echo "What was the username that started this script: " $USER

echo "What was the hostname of the box that ran this script: " $HOSTNAME

echo "The number of seconds since the script was started: " $SECONDS

echo "Random number, please: " $RANDOM

echo "Whats the current line # on this script: " $LINENO

echo "What is my bash source? " $BASH_SOURCE

echo "Whats the login name? " $LOGNAME

echo "Whats my term? " $TERM

echo "Whats the OS type? " $OSTYPE

$ bash test.bash.args.sh this is a goofy ass test

Number of arguments passed via script:  6
Name of the Script:  test.bash.args.sh
Names of arguments passed via the script:  this is a goofy ass test
Whats the process ID associated with this script:  15420
What was the username that started this script:  testuser
What was the hostname of the box that ran this script:  evergreen.corp
The number of seconds since the script was started:  0
Random number, please:  27597
Whats the current line # on this script:  11
What is my bash source?  test.bash.args.sh
Whats the login name?  testuser
Whats my term?  xterm-256color
Whats the OS type?  linux-gnu

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$ bash test.bash.args.sh this is a goofy ass test

Number of arguments passed via script: 6

Name of the Script: test.bash.args.sh

Names of arguments passed via the script: this is a goofy ass test

Whats the process ID associated with this script: 15420

What was the username that started this script: testuser

What was the hostname of the box that ran this script: evergreen.corp

The number of seconds since the script was started: 0

Random number, please: 27597

Whats the current line # on this script: 11

What is my bash source? test.bash.args.sh

Whats the login name? testuser

Whats my term? xterm-256color

Whats the OS type? linux-gnu

Creating a folder for each day of the year.

Posted by phatdee on May 11, 2019

Posted in: Commands, Mkdir. Tagged: day, mkdir, month, year. Leave a Comment

This will create a folder for each month 01-12.Â Inside each month folder will be 30 or 31 folders for each day of the month except for Feb. which will have only 28.Â This can be changed to 29 if it happens to be a leap-year.

mkdir -p {01,03,05,07,08,10,12}/{01..31} 02/{01..28} {04,06,09,11}/{01..30}

1	mkdir -p {01,03,05,07,08,10,12}/{01..31} 02/{01..28} {04,06,09,11}/{01..30}

UnixDude

"To be a warrior is not a simple matter of wishing to be one. It is rather an endless struggle that will go on to the very last moment of our lives. Nobody is born a warrior, in exactly the same way that nobody is born an average man. We make ourselves into one or the other." --Kokoro

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Disable Energy Star features on monitors

Passing arguments in bash scripts.

Creating a folder for each day of the year.

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