The first step of my project is to figure out what music files are in my Music folder.
Here is the beginning of my script. If I put the script in the Music folder, it works and generates my 'catalog' file. However, if I put the script in a different directory (say, my Scripts directory), I don't get any errors, but I also get no 'catalog' file.
This works (meaning it changes color) from CLI...echo -e 'e[1;36m' testCyanBut if I put that same exact line in a script, the result is not colored, and it displays the actual command on screen like this...-e 'e[1;36m' testCyanThe script is obviously executing. Why isn't it interpreting the backslash command in the script?
I am running Maverick via Wubi. I just completed a Kernel upgrade and when I restart into Ubuntu it just goes to a Bash prompt. I am not sure exactly what version I updated to so I haven't logged a bug report yet.
When you are performing time consuming operations in bash like installing new software, is it possible to write text that will appear at the prompt when the operation has finished.
E.g
Imagine running:
apt-get install eclipse-platform
Then it will use quite a while to finish while you see the installation log, meanwhile I want to create new folders (workspaces) which Eclipse later will use.
Is this possible without opening a new terminal (or tab)?
I've got an annoying problem that 'man' and some other commands do not auto-complete (via TAB). e.g. typing: man rsyn (TAB, TAB, TAB, etc) will not auto-complete to 'man rsync' however, if i 'sudo -s' & then try the above, 'man' auto-completes everytime. (Directories always auto-complete successfully) My ~/.bashrc contains:
Code:
# enable bash completion in interactive shells if [ -f /etc/bash_completion ] && ! shopt -oq posix; then . /etc/bash_completion
when ever some error happens in the functions, they are not propagated and err_out function is not called.I tried #!/bin/bash -E too; that way when there is an error the script exits but what I need is error to be propagated properly to the handler.
According to the Bash man pages, Quote: HOSTFILE Contains the name of a file in the same format as /etc/hosts that should be read when the shell needs to complete a hostname. The list of possible hostname completions may be changed while the shell is running; the next time hostname completion is attempted after the value is changed, bash adds the contents of the new file to the existing list. If HOSTFILE is set, but has no value, bash attempts to read /etc/hosts to obtain the list of possible hostname completions. When HOSTFILE is unset, the hostname list is cleared.
Here's the line in my .bashrc where HOSTFILE is set:
Code:
export HOSTFILE="~/.hosts"
I opened a new bash session, created ~/.hosts, filled it with the names of servers that I wanted to expand using tab completion. then typed
Code:
ssh p<tab><tab>
expecting to get a lists of all of the hosts in ~/.hosts starting with 'p'. Bash simply beeped at me twice.
I've been using python/bash to help myself automate things for a long time, however I am curious. One reason I use python more is because I don't quite know how to work with user input in Bash, such as getting it to ask for input and wait, and then placing that user input into a command.
Here's an example of a script I use from time to time for converting OGG video files into AVI.
How could I write this same script in Bash? Keep in mind I am mostly self taught, so I am by no means an expert programmer.
For some reason my bash autocomplete stopped working. I get the error when I try to cd into a directory, pressing <tab> for autocomplete: cd A-sh: <( compgen -d -- 'A' ): No such file or directory Autocomplete works for the root user and for the other user on the machine, just not logged in as this user. The .bashrc file looks fine to me, and I didn't make any changes to it to even cause the bash autocomplete to stop working (as far as I know).
# enable programmable completion features (you don't need to enable # this, if it's already enabled in /etc/bash.bashrc and /etc/profile # sources /etc/bash.bashrc). if [ -f /etc/bash_completion ]; then . /etc/bash_completion fi What else could cause autcomplete to stop working? I log in via ssh, btw.
I have bash script which has lots of echo statements and also I aliased echo to echo -e both in .bash_profile and .bashrc, so that new lines are printed properly for a statement like echo 'Hello World' the output should be I even tried using shopt -s expand_aliases in the script, I am running my script as bash /scripts/scriptnm.sh; if I run it as . /scripts/scriptnm.sh I am getting the desired output.
but that changes all. how can I change all files but subdirectorys? I was thinking of something likels -l | grep -v ^d but can't get it to work. I'm still learning about variables and how to use them. thanks in advance for your Patients.
I would like to keep track of not only what bash commands I used and when, but also where they were issued from, i.e. what was the current working directory when I issued "foobar" on a particular day and time. Can we ask bash history to keep track of working directories too? I have tried to get an idea of this reading the enormous "man bash", but I don't seem to have an answer yet either way.
I would like to know how do I print the line # in a script. My requirement is, I have a script which is about ~5000 lines long. If there are any errors happen I just exit. And I would like to add the line # of the script where the error happened.
I create a bash script that writes another bash file. But in the generated bash file I want to write a bash command in the file and not executing it.Here's my bash file:
Code: #!/bin/bash cat > ~/generateGridmix2data.sh << END
Code: #!/bin/bash trap "echo 'you got me'" SIGINT SIGTERM # to trap ctrl+c echo "Press ctrl+c during 5 sec loop" for ((i=0;i<5;i++)); do
[Code]...
How come code behaves normally and stops when ctrl+c signal is caught and resumes, but after I use at least one timeout read in the code it looks like, if signal is caught again it doesn't pause the execution but skips the loop. If you remove -t (timeout) option from the read, both loops look the same!
Now in my bash script, I want to get the output /home/user instead of $HOME once read. So far, I have managed to get the $HOME variable but I can't get it to echo the variable. All I get is the output $HOME.
I have written quite a few separate bash & scripts and php scripts that up to now I have run from cron jobs. However I have to estimate how long each takes to run, before running the next and so it probably takes much longer than necessary to run them all. They have to run in order.
Now there are so many I am thinking it would be better to have a master bash script that would run one after the other, but I am not sure how to get the master script to wait before starting to run the next script. Is this possible and is there a command that will make the script wait between bash and php scripts , for them to finish, before running the next?
I have searched and searched and maybe I don't know how to articulate this issue with out just posting the problem I'm having. Every time I bring up a terminal window I get the following "Header"
To be honest I cheated and used the .bashrc / .profile files from Ubuntu and all was working fine for a while now and it seems something changed to cause this... any ideas on why I am getting this? I checked my .bashrc and my /etc/profile and it doesn't look like anything is amiss..
I think it would be better to count the len and remove 3 chars to right to get the extension, but it can be macintosh filenames with have 4 chars for extensions.
I've noticed something, and hoped there was a work around.when I write a simple bash script, and run it, if I close the terminal i ran the bash script inside, the bash script stops. What are the solutions for this? Basically I want to run my bash script and close the terminal, keep the bash script running.
