How to make a keyboard shortcut under gnome run a shell script with parameter ?
On terminal the following works fine:
sbv.sh 50%
It adjusts the volume of a speaker. The path of the script is /usr/bin.
But when entered as a command for keyboard-shortcut, neither
/bin/bash sbv.sh 50%
/usr/bin/sbv.sh 50%
gnome-terminal -x sbv.sh 50%
nor
sh -c "sbv.sh 50%"
produce the desired volume-change. The speaker goes mute instead.
If the shortcut is changed to
notify-send "hello"
that produces the notification message, so the keyboard shortcut works alright.
you can call your script as follows
$ gnome-terminal -x /usr/bin/sbv.sh "50%"
I'm using ubuntu 20.04, so, -x parameter seems to be deprecated, If you are using the same version, you'll need to use -- instead of -x.
Related
I want to write a script for Ubuntu, which open a terminal-emulator, which only allows users interact with it only once. After finish running user's first command typed in, the terminal close on itself automatically, which is kind of like Win+R on windows OS.
How should I do that?
I try script like gnome-terminal -- bash -c "read cmd && $cmd", but there's two problem:
No auto-complete on user inputting commands;
Commands from .bashrc, .bash_aliases are not recognized.
You can try :
gnome-terminal -- bash --rcfile <(cat ~/.bashrc; echo 'PROMPT_COMMAND="PROMPT_COMMAND=exit"')
I don't have Ubuntu to test at the moment, but bash ... part worked.
I need to open the Mac Terminal and run some commands with os.execute in Lua
export VAMP_PATH=/path/to/plugin/directory
cd /path/to/script
./sonic-annotator -l
EDIT: got it to work without terminal with this
os.execute('export VAMP_PATH="'..script_path..'sonic/mac64/vamp"; cd "'..script_path..'sonic/mac64/"; ./sonic-annotator -d vamp:qm-vamp-plugins:qm-barbeattracker:beats -w csv "'..filename..'"')
To answer your actual question, you can start a Terminal and run some bash commands in it like this:
os.execute("osascript -e 'tell application \"Terminal\" to do script \"cd /Users/mark && ls\"'")
But, as I said in the comments, you don't necessarily need a Terminal to run a script, so you can just run a command like this:
os.execute("export V=fred; cd /Users/mark && ./SomeScript.sh")
If you are running a script because you just want the user to see the output of the script, it is often easier and involves far less quoting if you run your command and pipe the result to open -f like this, which displays the output in a text editor:
os.execute("cd /Users/mark; ls | open -f")
I am trying to associate a hotkey with opening vim with recent history browsing, thus I have wrote the following line
gnome-terminal -x "vim -c ':browse old'"
However this gives
Error: Failed to execute child process "vim -c ':browse old'" (No such file or directory)
What am I doing wrong?
Good news! The -x option of gnome-terminal makes it very easy to start a new terminal and run a new program in it. Just do:
gnome-terminal -x vim -c ':browse old'
The meaning of -x is that all subsequent arguments are passed to the program that you run, so no quoting is needed.
I want to use the screen -x command to enter a screen then run a command. I thought this would be easy:
screen -x
cd /ftb
java -Xms2048m -Xmx2048m -jar mcpc.jar
However that didn't work. It outputs the screen help and says Error: Unknown option x and : No such file or directory 2: cd: /ftb (including the :)
First, your script file has DOS line endings; the unknown option is actually -x\r. You'll need to remove them, either by saving the file in your editor with UNIX line endings or running dos2unix on the file
Second, when screen -x succeeds, you are attached to the screen session, and the screen -x command will not exit until you detach, at which point your script can continue with the cd command. I think what you actually want is the -X option, which sends a command to an existing session.
screen -X 'cd /ftb; java -Xms2048m -Xmx2048m -jar mcpc.jar'
screen -x
Send the command to the session, then attach to it.
I am trying to send input to a interactive command running via screen. Here is my initial command
screen -L -c ./customrc -S psql -d -m /opt/PostgreSQL/9.0/bin/psql
The above command will run interactive psql in screen detach mode. The customrc is used to define a log file for the output (which I will read from another process by polling)
I am using following two commands to send input to psql running in screen
screen -S psql -X readreg p psqlcommands.sql
screen -S psql -X paste p
The problem is that the above commands do not work unless I reattach screen at least once. Once I have attached screen and detached, the above commands work as expected. I have to launch these commands via background java process hence the interactive shell (bash) is not available. My goal is to run psql in interactive mode and pass input to it and capture its output via a log file.
So far I have tried to run screen via xterm (or konsole or gnome-terminal) in attach mode, use readreg/paste and then detach, but I realise that xterm will not be available in my production environment. I've also tried sending output to /proc//fd/0 but I am unable to emulate 'ENTER' from keyboard (I have to attach and press in order for the output to be accepted by psql). I think pipes and fifo may help but I am unable to figure out how to proceed with them using screen and psql.
I appreciate any further hints or workarounds.
Thank you,
Usman.
Well, you can use
screen -S psql -p 0 -X stuff $'\n'
or better (works for me)
screen -S mname -p 0 -X stuff `echo -ne '\015'`
-p 0 is needed to select the window.
Have you tried this to "press enter" after your readreg and paste?
screen -S psql -X stuff $'\n'
FINAL ANSWER: It is a bug/feature in 'GNU screen' that it needs a DISPLAY atleast once for 'paste' command to work. Following are possible workarounds this problem:
Finally figured out how to utilise psql with pipes and screen. Here is the solution:
mkfifo psql.pipe
screen -L -c ./customrc -S psql -d -m bash -i -c "while (true); do cat psql.pipe; done | /opt/PostgreSQL/9.0/bin/psql -a"
After that, I can cat my commands to the pipe:
cat ./mycommands.sql > psql.pipe
To quit from screen and terminating psql, I used
screen -S psql -X quit
EDIT: (finally) figured out the solution for my problem without using screen command. Meet 'empty' utility.
empty -f -i psql.in -o psql.o -p psql.pid <psqlpath>
This allows psql to run in full interactive mode as opposed to the original solution that I used (in which psql does not run in interactive mode).
Thanks.
Usman
I had this same problem. My workaround was to launch screen attached but pass it a screenrc file where the last command is "detach"
So this is my screenrc
#change the hardstatus settings to give an window list at the bottom of the
#Set this first otherwise messes with bash profile
hardstatus alwayslastline
#screen, with the time and date and with the current window highlighted
#hardstatus string '%{= kG}%-Lw%{= kW}%50> %n%f* %t%{= kG}%+Lw%< %{= kG}%-=%c:%s%{-}'
hardstatus string '%{= kG}[ %{G}%H %{g}][%= %{= kw}%?%-Lw%?%{r}(%{W}%n*%f%t%?(%u)%?%{r})%{w}%?%+Lw%?%?%= %{g}][%{B} %m-%d %{W}%c %{g}]'
#set scrollback
defscrollback 4096
#detach
detach
Hope this helps
P