There is a command line interface for Reddit called “rtv” (reddit terminal viewer). It’s written in Python, so you can install it with
Here is a short youtube video on how to use it.
From a script I want to launch a terminal that opens in a specified folder.
Thanks to #linux, I got two solutions:
A1) I use konsole, which has an option for this:
konsole --workdir /tmp
It will open a terminal in the /tmp directory.
A2) Change directory to the specified folder and launch the terminal:
cd /tmp; konsole
If you want to do it from a script, the idea remains the same.
B) If you want to execute a command automatically in the opening terminal, use this:
konsole -e mc
C) Set the title of Konsole to a specified text:
konsole -p tabtitle='NVIM server'
Find more info here.
mps-youtube is a terminal-based YouTube player and downloader. If you use YouTube a lot for listening music, then you must give it a try.
“If PDF is electronic paper, then pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses. Pdftk is a simple tool for doing everyday things with PDF documents.” (source)
Pdftk is a great command-line tool to manipulate your PDF files.
sudo apt-get install pdftk
The following examples are taken from here.
Merge Two or More PDFs into a New Document
pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf
or (Using Handles):
pdftk A=1.pdf B=2.pdf cat A B output 12.pdf
or (Using Wildcards):
pdftk *.pdf cat output combined.pdf
Split Select Pages from Multiple PDFs into a New Document
pdftk A=one.pdf B=two.pdf cat A1-7 B1-5 A8 output combined.pdf
Encrypt a PDF using 128-Bit Strength (the Default) and Withhold All Permissions (the Default)
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foopass
Same as Above, Except a Password is Required to Open the PDF
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz
Same as Above, Except Printing is Allowed (after the PDF is Open)
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz allow printing
Decrypt a PDF
pdftk secured.pdf input_pw foopass output unsecured.pdf
Join Two Files, One of Which is Encrypted (the Output is Not Encrypted)
pdftk A=secured.pdf mydoc.pdf input_pw A=foopass cat output combined.pdf
Uncompress PDF Page Streams for Editing the PDF Code in a Text Editor
pdftk mydoc.pdf output mydoc.clear.pdf uncompress
Repair a PDF’s Corrupted XREF Table and Stream Lengths (If Possible)
pdftk broken.pdf output fixed.pdf
Burst a Single PDF Document into Single Pages and Report its Data to doc_data.txt
pdftk mydoc.pdf burst
Report on PDF Document Metadata, Bookmarks and Page Labels
pdftk mydoc.pdf dump_data output report.txt
“pdftk uses the iText Java library (http://itextpdf.sourceforge.net/) to read and write PDF. The author compiled this Java library using GCJ (http://gcc.gnu.org) so it could be linked with a front end written in C++.” (from the man)
You can also “explode” a PDF, i.e. split it into a set of individual pages:
pdftk file.pdf burst
When talking about command line scripting, most people think of Python or Perl. But it’s good to know that you can do something similar with PHP too!
#!/usr/bin/php <?php # /etc/php5/cli/php.ini # The configuration file for the CLI version of PHP. print "Hello, World!\n"; ?>
You can execute it with “
./hello.php” or “
Notice that the command line version of PHP uses a different
Consult this page to learn more.
You use the command line terminal a lot and sometimes you need a simple calculator. Is one available in command line?
Of course. It’s called Python interpreter :) Python is usually available everywhere and its command line interpreter is a perfect calculator too.
C:~> python Python 2.6.6 (r266:84292, Sep 15 2010, 15:52:39) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> 45 + 98 143 >>> _ + 7 150 >>> _ / 2.0 75.0 >>>
Cannot be any simpler. As you can see, the special variable ‘
_‘ (underscore) gets the value of the previous computation. Division between two integers returns the whole part, thus
7 / 2 is
3. What you need is usually
7 / 2.0, which is
You can quit with CTRL+D.
I use this calculator quite often, so I added the following line to my