Nick Shu. A Fool in the Making

Linux Terminal Cheatsheet

 
  • May 20, 2018

This page is basically just some Linux commands that I think it’s good for me to keep as reference

Find Text in All Files

In order to look for the files that contain a certain text:
grep -r 'text_to_be_found' /path/to/files

Alternatively, you can use, from rakib_
grep -rnw '/path/to/somewhere/' -e 'pattern'

  • -r or -R is recursive,
  • -n is line number, and
  • -w stands for match the whole word.
  • -l (lower-case L) can be added to just give the file name of matching files. Along with these, –exclude, –include, –exclude-dir flags could be used for efficient searching:

This will only search through those files which have .c or .h extensions: grep --include=\*.{c,h} -rnw '/path/to/somewhere/' -e "pattern"

This will exclude searching all the files ending with .o extension: grep --exclude=*.o -rnw '/path/to/somewhere/' -e "pattern"

For directories it’s possible to exclude a particular directory(ies) through –exclude-dir parameter. For example, this will exclude the dirs dir1/, dir2/ and all of them matching *.dst/:

` grep –exclude-dir={dir1,dir2,*.dst} -rnw ‘/path/to/somewhere/’ -e “pattern” `

Set the Monitor Resolution

Get the Modeline with the following command. 60 is the monitor refresh rate in Hz. You have to know your monitor refresh rate!!! cvt 1360 768 60

The output looks like this. Copy the modeline after Modeline to use it in the next command.:

# 1360x768 59.80 Hz (CVT) hsync: 47.72 kHz; pclk: 84.75 MHz`
Modeline "1360x768_60.00"   84.75  1360 1432 1568 1776  768 771 781 798 -hsync +vsync

Create a new mode with the copied modeline and xrandr.: xrandr --newmode "1360x768_60.00" 84.75 1360 1432 1568 1776 768 771 781 798 -hsync +vsync

With the following command, you get the connected port.
xrandr --query | grep connected

The output looks like this. As you can see, in my case the connected port is DVI-0.:

HDMI-0 disconnected (normal left inverted right x axis y axis)
DVI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
VGA-0 disconnected (normal left inverted right x axis y axis)

Add the new mode using your connected port.: xrandr --addmode DVI-0 "1360x768_60.00"

Change the monitor resolution.: xrandr --output DVI-0 --mode "1360x768_60.00"

Colored Bash

Open ~/.bashrc in text editor
sudo gedit ~/.bashrc

Uncomment line:
#force_color_prompt=yes \(\rightarrow\) force_color_prompt=yes

Save and Source the file
source ~/.bashrc

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