Ubuntu – How to get apt-get to call apt-fast

apt

Have been using apt-fast for a while now and really liking it. In case you don't know it is useful to speed up apt-get. However, I have a few questions regarding apt-fast:

I would like to make any call to apt-get run apt-fast. I'm assuming I can put a script called "apt-get" in my ~/bin folder that executes apt-fast… so maybe I'm answering my own question on this first one.

Would a script like this work?
```
#!/bin/bash
exec apt-fast $@
exit 0
```
apt-fast does not seem to speed up the very thing I wish it sped up most – apt-get update

I would like apt-fast to make apt-get update run faster. Is this possible?

Best Answer

You can create an alias for apt-get in your home directory. To do so, follow these:

Open a terminal and do this command:

touch ~/.bash_aliases; gedit ~/.bash_aliases

In the new opened file, type these and save and exit.
```
alias apt-get='apt-fast'
```

Then, whenever you run apt-get, apt-fast will run instead

For more info, see this page

http://modifyubuntu.com/#terminal

Related Solutions

Ubuntu – How to check for apt-get errors in a bash script

The simplest approach is to have your script continue only if apt-get exits correctly. For example:

sudo apt-get install BadPackageName && 
## Rest of the script goes here, it will only run
## if the previous command was succesful

Alternatively, exit if any steps failed:

sudo apt-get install BadPackageName || echo "Installation failed" && exit

This would give the following output:

terdon@oregano ~ $ foo.sh
[sudo] password for terdon: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package BadPackageName
Installation failed

This is taking advantage of a basic feature of bash and most (if not all) shells:

&& : continue only if the previous command succeeded (had an exit status of 0)
||: continue only if the previous command failed (had an exit status of not 0)

It is the equivalent of writing something like this:

#!/usr/bin/env bash

sudo apt-get install at

## The exit status of the last command run is 
## saved automatically in the special variable $?.
## Therefore, testing if its value is 0, is testing
## whether the last command ran correctly.
if [[ $? > 0 ]]
then
    echo "The command failed, exiting."
    exit
else
    echo "The command ran succesfuly, continuing with script."
fi

Note that if a package is already installed, apt-get will run successfully, and the exit status will be 0.

Ubuntu – How to take a textbox text entry and make it a variable

You are clicking the button before self.instvar is set. The on_textbox_changed handler is probably never called. Startup Glade and select your text entry. In the property editor on the right select the signals tab and connect the GtkEditable changed signal to the correct handler.

You should also put a print statement inside on_textbox_changed to see if it really is called.

Alse, this line doesn't do what you think it does:

command2 = 'xterm -e sudo apt-get install ' and self.instvar

See this interactive session:

>>> instvar = "firefox"
>>> "xterm -e sudo apt-get install" and instvar    # Your code, wrong output
'firefox'
>>> "xterm -e sudo apt-get install %s" % instvar    # Choose one of these
'xterm -e sudo apt-get install firefox'
>>> "xterm -e sudo apt-get install " + instvar
'xterm -e sudo apt-get install firefox'
>>> "xterm -e sudo apt-get install {}".format(instvar)
'xterm -e sudo apt-get install firefox'

Best Answer

Related Solutions

Ubuntu – How to check for apt-get errors in a bash script

Ubuntu – How to take a textbox text entry and make it a variable

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