Tagged Questions

4
votes
3answers
89 views

How to constraint time a program runs in Linux?

I have several simulations to do, each is invoked with python simulate.py <parameter list>. The problem with these simulations is that some of them hang without quiting, which prevents me from ...
1
vote
0answers
21 views

rsstail Not Printing Output

I've installed rsstail 1.8 on my linux box and everything seems to be going smoothly, knock on wood, except for the part where rsstail isn't printing the streams. Running the command, I see that it's ...
2
votes
2answers
236 views

Averaging output of dstat

I need to average upload and download speed using dstat -n. How can I add all the received and sent data sizes that appear after dstat -n, so that I can add them and find average upload and download ...
1
vote
3answers
106 views

Rerunning the same command with a different parameter

I know that I can run the following command ls Some{File,Folder} And it is equivalent to running this: ls SomeFile SomeFolder (I also use it a lot for things like mv place_{a,b}) However, I was ...
1
vote
2answers
246 views

Concatenate multiple files under subdirectories

My directory structure is given below x:\Project_2012-158A\Sample_4041 SampleSheet.csv 4041_CGTACG_L002_R1_001.fastq 4041_CGTACG_L002_R2_001.fastq 4041_CGTACG_L006_R2_001.fastq ...
1
vote
4answers
485 views

Checking if a file exists in several directories

I've been working on this far too long and need some help. I need a script that will look at files in a directory and see if it exists in one of several directories. I need something like this: for ...
2
votes
0answers
113 views

How to emulate a KWin effect by command line?

I would like to apply the Toogle Invert Effect when I start my system. So, I need to know how to call this KWin effect using the terminal. OBS.: I'd tried xte "keydown Meta_L" "key i" "keyup ...
2
votes
2answers
306 views

What would it take to add a command to run a script at the completion any given random task?

I was playing around with Pushover, and had the thought that it would be cool if I could use it as an argument on any random command, so that it would run a pushover script at the end of the task, ...
5
votes
2answers
565 views

How to tweet using terminal?

I would like to tweet a message using terminal. I tried something like: curl -u 'TwitterUsername':'TwitterPassword' -d status=”Your Message Here” https://twitter.com/statuses/update.xml but seems ...
1
vote
1answer
171 views

How to open a local URL (webpage) on the command line

On MacOS X I can run open /some/path/index.html and this would open the page index.html with the default software that handles .html files. Is there something similar on Ubuntu Linux? I have used ...
3
votes
3answers
359 views

command line audio with mpg123 - how to save position in audio and begin from that location next time?

I am contemplating using mpg123 as an audiobook player. I can't find any other good audiobook players for Linux, and I think mpg123 may be my best option. My audiobooks are organized by directories ...
3
votes
1answer
274 views

How can I copy all users .bash_history files into my home directory?

I am running as root. I want to copy all the users on the system's .bash_history files into my home directory. I can do this to combine all of them into one, but then I can't tell who's commands are ...
7
votes
3answers
456 views

How to pipe the list of commands displayed by of “tab complete”?

When using commands in bash I like the double tab option to display the available commands. Some commands have more possible matches than others: Is there a way I can pipe the output of the double ...
3
votes
3answers
2k views

How to watch rss feed for new entries from bash script?

I need to watch a RSS feed from our hudson ci server. Each time a new entry is available i want to play a sound by calling #>play sound.wav. Does anyone know a tool which can watch a rss-feed and ...
5
votes
3answers
2k views

Storing output of command in shell variable

I have an operation using cut that I would like to assign result to a variable var4=ztemp.xml |cut -f1 -d '.' I get the error: ztemp.xml is not a command The value of var4 never gets ...
3
votes
2answers
245 views

Scheduling command/script by specifying the exact second

I'm using bash and wondering how I can execute a command/script at a later specified time, with the accuracy of a second? I read the man page for the at-command, but as far as I could understand it's ...
7
votes
4answers
4k views

grep — removing text after delimiter token

I have a file in which I need to eliminate everything after the first ; on every line. So a file like this: sdfsdsdf; fsdfsddf;sdfsd; Will result in this: sdfsdsdf fsdfsddf I have looked into ...
8
votes
6answers
482 views

Best way run a command on each file in a directory tree

There appear be a number of ways to do this including loops in shell script, find and xargs. Which of these is best, and which is most portable?
86
votes
16answers
39k views

Repeat a Unix command every x seconds forever

There's a builtin Unix command repeat whose first argument is the number of times to repeat a command, where the command (with any arguments) is specified by the remaining arguments to repeat. For ...