I am using ubuntu, fluxbox, pcmanfm as filemanager, xmms2 as music player. My goal: add songs to xmms2 playlist easily with pcmanfm. I have this script that works for single files: path= $1 if [ -d "$path" ]; then #if directory xmms2 radd "$path" else if [ -e "$path" ]; then #if not directory, but file xmms2 add "$path" ...
I've coded a program in C that sends messages to the stdout using printf and I'm having trouble redirecting the output to a file (running from bash). I've tried: ./program argument >> program.out ./program argument > program.out ./program >> program.out argument ./program > program.out argument In each case, the file program.out is...
I recently installed the Macports port of Ruby19 and it's changed my environment settings to point to opt/local in the first instance rather than usr/local where I have my standard 1.8.7 install. I've tried updating my ~/.profile by adding the usual export PATH etc. as the last line but to no avail. I have to run the .profile file each ...
Hi there! Is there a way a send custom (and event undemanded) arp responses via shell (e.g. by hand or by a shell script) on MacOS X or any other UNIX? In addition, is there a way of making the software ask for the MAC representation for all IPs in the current subnet without sending pings the anyone? Thanks, Max ...
Hello! I am writing a Makefile with a lot of repetitive stuff, e.g. debug_ifort_Linux: if [ $(UNAME) = Linux ]; then \ $(MAKE) FC=ifort FFLAGS=$(difort) PETSC_FFLAGS="..." \ TARGET=$@ LEXT="ifort_$(UNAME)" -e syst; \ else ...
What are the worst/best unix shell nightmares? My favourites are: rm -rf / tmp/foo (deletes everything if you are root; typo :-( ) rm -rf .* (deletes everything if you are root; not just all hidden files) Files in * that are used as parameters, e.g. after touch -- -rf, rm * eventually evaluates to rm -rf foo bar cat foo | sed 's/foo/ba...
Question: I have a question that is apparently not answered by this already-asked Bash completion question on Stack Overflow. The question is, how to get Bash alias completion (for any alias) on a partial substring. Example: For example, assume I have the following aliases: open.alicehome="cd /usr/home/alice" open.bakerhome="cd /usr/ho...
Is it possible to get, using Bash, a list of commands starting with a certain string? I would like to get what is printed hitting <tab> twice after typing the start of the command and, for example, store it inside a variable. ...
In bash echo ${!X*} will print all the names of the variables whose name starts with 'X'. Is it possible to get the same with an arbitrary pattern, e.g. get all the names of the variables whose name contains an 'X' in any position? ...
I'm trying to run the following command: find . -iname '.#*' -print0 | xargs -0 -L 1 foobar where "foobar" is an alias or function defined in my .bashrc file (in my case, it's a function that takes one parameter). Apparently xargs doesn't recognize these as things it can run. Is there a clever way to remedy this? ...
Maybe theres another solution to this. I built a web app that requires 5-10 crons to keep it maintained and various intervals. I want to check-in the crontab into version control, so that it can be easily deployed to other servers. I would like to be able to put a line in the /etc/crontab file that would tell it to look into /myapp/app....
I stumbled upon this page and can't understand how this works. This command "exponentially spawns subprocesses until your box locks up". But why? What I grok less are the colons. user@host$ :(){ :|:& };: ...
Hello, I have a Makefile where most of my targets are created generically through a canned sequence. It seems that bash completion only suggests completions for normal targets, e.g. target_name: #$@ and not for generic targets. Is there any way to make bash completion complete all the targets, even though they are not made ex...
Hey everyone, I'm having issues passing arguments through "run" to the windows side To demonstrate, it looks something like this: run C:\foo.exe /BUILD The '/BUILD' parameter is never passed to the executable. Anyone know of a way to get around this? Thanks! ...
I need a quick way to find out if a given port is open with Ruby. I currently am fiddling around with this: require 'socket' def is_port_open?(ip, port) begin TCPSocket.new(ip, port) rescue Errno::ECONNREFUSED return false end return true end It works great if the port is open, but the downside of this is that occasio...
In bash, how do I determine what sound card is installed? I'm trying to create a plugin for Rhythmbox, and I'd like to test for this in a configuration script. Edit: On my machine, I needed to use sudo to be able to use lspci and lsmod. @Quassnoi's answer using cat worked without extra privileges. ...
A quick couple of Cygwin questions that I am not quite sure how to search in order to find the answer myself: Question: When I run which perl on my cygwin installation, it doesn't point to my pre-installed windows installation, it points to the cygwin one. How can i change it so it points to my windows based perl installation: /cygd...
Hi all, Can someone help explain the following: If I type: a=`ls -l` Then the output of the ls command is saved in the variable a but if I try: a=`sh ./somefile` The result is outputed to the shell (stdout) rather than the variable a What I expected was the result operation of the shell trying to execute a scrip 'somefile' to b...
We have a list of (let's say 50) reports that get dumped into various folders depending on certain conditions. All the reports have standard names eg. D099C.LIS, D18A0.LIS etc. Sometimes a report can exist in up to 5 different locations, and I need to generate a list of all the locations of the most recent version of each report. I ca...
In my bash script I need to change current dir to user's home directory. if I want to change to user's foo home dir, from the command line I can do: cd ~foo Which works fine, however when I do the same from the script it tells me: ./bar.sh: line 4: cd: ~foo: No such file or directory Seams like it would be such a trivial thing, b...