3
votes
5answers
166 views

Listing directories based on size from largest to smallest on single line

I can use the following command to get a list of directories and their sizes and sort them from largest to smallest (in the example I renamed the directories to numbers to make this easier to ...
5
votes
3answers
96 views

How to grab the oldest unread message from `mail` in a script?

In a script I am trying to finish writing now, I need to get the oldest unread message from the current user's mailbox (specifically, I need the subject line for this project). After extracting the ...
0
votes
1answer
149 views

Bare-bones linux? [closed]

I am working on a homemade OS and I was originally going to write it myself in Assembly and Python, but I decided that doing this would just be easier, faster, and more Linux-y. I have the Python part ...
1
vote
1answer
930 views

How to exit out of the shell script successfully so that python subprocess think it is successfull exit? [closed]

Below is my shell script which simply execute a url like this http://example.com:8080/beat and parse the response and verify certain conditions on it. If that condition is met, then exit successfully ...
1
vote
4answers
2k views

parse json using python

I have a JSON file members.json as below. { "took": 670, "timed_out": false, "_shards": { "total": 8, "successful": 8, "failed": 0 }, "hits": { "total": 74, ...
10
votes
7answers
4k views

How to restart the Python script automatically if it is killed or dies

I am running my Python script in the background in my Ubuntu machine (12.04) like this - nohup python testing.py > test.out & Now, it might be possible that at some stage my above Python ...
0
votes
1answer
63 views

API for panel applets on eOS Pantheon?

Is there any API (esp python or bash) to append new applets on eOS Pantheon's panel? I can't find proper documentation.
-3
votes
2answers
188 views

Bash operator & not working [closed]

As per the bash reference, we can give a non-blocking command by ending it with an ampersand(&) character. However, when I try the below command its not working: python -m SimpleHTTPServer ...
1
vote
2answers
351 views

How to get name of Display Manager on Linux? [duplicate]

I want to see Display Manager name (Gnome, KDE etc.) via python or bash script. Is there any command for it as uname? (I try fedora and Debian)
3
votes
2answers
387 views

Wait for a X window to appear/disappear (in a sane way)

Inside a shell script, I need to wait for a window that has a string on its title to appear, do some action, and then wait for it to disappear, and do some other action. Until yesterday, I had this ...
2
votes
1answer
67 views

process continous output of synclient

I am using synclient to track the position of finger on the touchpad. I use the following command. synclient -m 100 | awk '{print $2,$3}' This command gives the 'x' and 'y' co-ordinate on the ...
6
votes
4answers
1k views

Hybrid code in shell scripts. Sharing variables

This answer discusses how to run a multi-line Python snippet from the command line in a terminal. I noticed that the answer works great within shell scripts, even with nested indentation, which is ...
1
vote
1answer
252 views

Safely convert unicode strings to printable characters

I have many HTML files containing mixed unicode strings like \303\243 and printable characters like %s. What I'd like to do is converting the unicode strings into printable characters in a safe way. ...
8
votes
5answers
1k views

How can I have more than one possibility in a script's shebang line?

I'm in a bit of an interesting situation where I have a Python script that can theoretically be run by a variety of users with a variety of environments (and PATHs) and on a variety of Linux systems. ...
5
votes
1answer
112 views

Correct handling of Python2 and Python3

What is the correct way running scripts that depend on python2.x but on a system where python3.x is aliased with python. The solution should take into account the following things : Python2 ...
3
votes
1answer
49 views

How to determine the current Enhanced Zoom factor in Compiz?

When I use Skype :( need to, rather than want to ), I find that I sometimes want to open the main menu, but it doesn't have a shortcut key assigned to it (well, not one that I can find). I have ...
3
votes
3answers
262 views

Is there an equivalent of calling the built-in python function help('topics') but in bash?

I would like to explore man pages in bash using something similar to the python help('topics') function. Does this exist in bash? I know the bash equivalent of python's help('modules') would look ...
4
votes
6answers
346 views

What is the easiest way to check if column A and B values goes both ways with AWK? [closed]

What is the easiest way to check if column A and B values goes both ways? Output to check: Mike John John Mike Pamela Barbara Barbara Pamela Mike Paul Roger Paul Desired output Mike <-> ...
3
votes
2answers
2k views

Sending the output from 'dd' to awk/sed/grep

I'm trying to approximate the computer's write speed using dd: dd if=/dev/urandom of=/dev/null bs=1K count=10000 which gives the following output 10000+0 records in 10000+0 records out 10240000 ...
3
votes
4answers
400 views

Align a hex text file at 9 bytes each line

I want to align the selected portion of a text file at 9 bytes each column. For example suppose my text file looks like below. 00 2f c6 b8 29 fd 02 37 11 00 9f 74 34 0b 60 72 38 20 00 9e 61 33 8e ...
1
vote
2answers
101 views

Narrow characters

It would be awesome to modify spark to print narrow characters in for example Gnome Terminal. Is this at all possible with Bash / Python?
1
vote
1answer
360 views

Pipe Python Shell to source-highlight

When I try to make the Python shell get color: python 2>&1 | source-highlight --failsafe -f esc -s python the >>> prompt seems to be always delayed by 1 command. Why is this ...
7
votes
4answers
7k views

Why is this python error message generated whenever I type a nonsense command?

Whenever I type any "nonsense" command, this python error message is generated. Normal commands work fine. Any idea how to debug this? $ somenonexistingcommand Traceback (most recent call last): ...
9
votes
2answers
5k views

How can I rename photos, given the EXIF data?

Let's say I have a bunch of photos, all with correct EXIF information, and the photos are randomly named (because of a problem I had). I have a little program called jhead which gives me the below ...
1
vote
0answers
791 views

Which scripting language is most widespread in system administration tasks? [closed]

I am migrating to Linux and have some experience with the Mac OS X command line/bash. I'd like to automate system admin tasks via scripting, but I am unsure as which language is the most used in the ...