Using wild-cards to display various files in a folder with ls. I recently needed to check whether certain files were in the /usr/lib folder and I used the ls command to do this. to find all files related to the Perl programming language in the /usr/lib directory. ubuntu ~ $ ls /usr/lib/*perl* /usr/lib/libperl.so.5.18 /usr/lib/libperl.so.5.18.2 … Read more
Get a nice urxvt windows with a fixed font and lovely colors. urxvt -fn "fixed" +sr +st -fg "#FFFFFF" -bg "#000033" -bd "#302c64" \ -ip +sb -title "*-Home-${HOME}-Shell-${SHELL}-Display-${DISPLAY}*" \ -tint DarkSlateGrey -fade 50 -fadecolor redurxvt -fn "fixed" +sr +st -fg "#FFFFFF" -bg "#000033" -bd "#302c64" \ -ip +sb -title "*-Home-${HOME}-Shell-${SHELL}-Display-${DISPLAY}*" \ -tint DarkSlateGrey -fade 50 … Read more
The Larswm window manager deserves to be given a try if you want a fast and flexible window manager to use on a netbook or low specced desktop machine. This window manager is very fast and usable for any user that wants to use a desktop that is free from bloat. Good idea for graphics … Read more
Using sed to filter a text file and change a specific character for another. In this case the ” character becomes the ‘ character using the magic of the sed command. Since I am using a character the shell also uses I have to escape it out so the command will work. This can make … Read more
This example is using grep on an assembler file to find an exact match for a certain line in the file and which line number it appears on. ubuntu ~/Documents $ grep -x -n "; copy the virus, we have also to copy the section table, located before" virii.S 143:; copy the virus, we have … Read more
This is the proper way to use grep. You do not need to use cat at all. This method works well and is one command, not two piping together. jason@jason-desktop:~/Documents$ grep apt-get ../.bash_history sudo apt-get update sudo apt-get install me-tv sudo apt-get update && sudo apt-get install xvst apt-get moo apt-get moojason@jason-desktop:~/Documents$ grep apt-get ../.bash_history … Read more
How to strip all numbers out of a text stream This is how to remove all text from the output of a file and only keep the other formatting. homer@deep-thought ~/Desktop/b $ fortune -l | sed s/[a-z]/\ /gi; : 3:15 . . – . , ! — ’84homer@deep-thought ~/Desktop/b $ fortune -l | sed … Read more
Very useful Linux tips and tricks for the terminal userVery good find command trickInstall a very nice slim desktop on Linux Mint and UbuntuSet a locale on a Debian systemChange the Plymouth theme on ubuntuList only directories in a directory listing with ls Very useful Linux tips and tricks for the terminal user Very good … Read more
Very useful Linux tips and tricks for the terminal userVery good find command trickInstall a very nice slim desktop on Linux Mint and UbuntuSet a locale on a Debian systemChange the Plymouth theme on ubuntuList only directories in a directory listing with lsHow to make the Xterm font larger.Using the .inputrc file to control keybindings … Read more
To list all the files installed by a certain Debian package, use this command. dpkg -L [PACKAGENAME]. For example. ubuntu ~ $ dpkg -L vim /. /usr /usr/bin /usr/bin/vim.basic /usr/share /usr/share/lintian /usr/share/lintian/overrides /usr/share/lintian/overrides/vim /usr/share/bug /usr/share/bug/vim /usr/share/bug/vim/presubj /usr/share/bug/vim/script /usr/share/doc /usr/share/doc/vimubuntu ~ $ dpkg -L vim /. /usr /usr/bin /usr/bin/vim.basic /usr/share /usr/share/lintian /usr/share/lintian/overrides /usr/share/lintian/overrides/vim /usr/share/bug /usr/share/bug/vim /usr/share/bug/vim/presubj … Read more
The grep command on Linux is very good for filtering text to find certain strings. This is mostly used for filtering the output of a command to narrow down what the user is looking for. Find all instances of a word in a text file. jason@DESKTOP-R72SPS3:/usr/share/X11$ grep "dark" rgb.txt 47 79 79 dark slate gray … Read more
Some very useful Linux tricks and tips. Convert a Linux text file to DOS format with AWK. ┌──(john㉿DESKTOP-PF01IEE)-[~] └─$ awk ‘{sub(/$/,"\r")};1’ hello.txt > dodo2.txt┌──(john㉿DESKTOP-PF01IEE)-[~] └─$ awk ‘{sub(/$/,"\r")};1’ hello.txt > dodo2.txt Convert a DOS text file to UNIX format. [jason@darknet:~] awk ‘{sub(/\r$/,"")};1’ dodo2.txt > dodo3.txt[jason@darknet:~] awk ‘{sub(/\r$/,"")};1’ dodo2.txt > dodo3.txt Get your Internet-facing IP address from … Read more
Here is one for any experimenters out there… It is possible to create files which simply cannot be deleted from the standard shell. To do this you will have to physically create the file using a script or a text editor, and you will have to use a sequence of control characters which cannot be … Read more
Hacking is something that a lot of us think in a negative way, but the truth of the matter is, there are a lot of positives that can come out of it as well. In this article, we’re going to take a look at 10 cool tricks that you can use if you’re thinking about … Read more
Using the shellshock bash bug on an iMac. iMac04:~ admin$ env VAR1=’me() {echo "hello"}\ ‘ /bin/echo "hello" helloiMac04:~ admin$ env VAR1=’me() {echo "hello"}\ ‘ /bin/echo "hello" hello Getting free hard disk space easily. iMac04:~ admin$ df -Hla Filesystem Size Used Avail Capacity iused ifree %iused Mounted on /dev/disk0s2 89G 64G 25G 73% 15757422 6089307 72% … Read more
There are many useful Linux tips that make the life of a Linux user much easier. One is for the VI or VIM editor. To open a file at a specific line; use this command. homer@deusexmachina ~/Documents/yadex-1.7.901 $ vim src/x11.h +33homer@deusexmachina ~/Documents/yadex-1.7.901 $ vim src/x11.h +33 This will open the file x11.h at line 33. … Read more
Change the mac address of your network adapter. sudo ifconfig wlan0 down && sudo ifconfig wlan0 hw ether 00:11:22:33:44:55 && sudo ifconfig wlan0 upsudo ifconfig wlan0 down && sudo ifconfig wlan0 hw ether 00:11:22:33:44:55 && sudo ifconfig wlan0 up This will change the mac address of your network interface instantly. Below is an example. homer@deusexmachina … Read more
The boxes utility for Linux allows you to render an ascii text box around text. Below is an example. homer@homer-eME730 19:14:21 ~ $ echo `echo "This is a sentence printed to the terminal."` | boxes /***********************************************/ /* This is a sentence printed to the terminal. */ /***********************************************/homer@homer-eME730 19:14:21 ~ $ echo `echo "This is a … Read more
This sed trick will filter out the unwanted characters and leave only the letters ‘A’. homer@deusexmachina ~ $ echo "###AAA" | sed ‘s/###//gi’ AAAhomer@deusexmachina ~ $ echo "###AAA" | sed ‘s/###//gi’ AAA This is how to re-bind the annoying CAPS-Lock key to Esc. This can give that key a new use. xmodmap -e ‘clear Lock’ … Read more
Some very useful Linux shell commands and tricks. Print numbers in sequence. [homer@localhost ~]$ seq 8 24 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24[homer@localhost ~]$ seq 8 24 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 … Read more