Tagged Questions

36
votes
12answers
12k 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 ...
7
votes
3answers
254 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 ...
6
votes
4answers
1k 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 ...
5
votes
6answers
297 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?
3
votes
3answers
66 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
148 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 ...
3
votes
2answers
169 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 ...
2
votes
3answers
255 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 ...
2
votes
3answers
555 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 ...
1
vote
1answer
37 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 ...