Why do you need to put #!/bin/bash at the beginning of a script …
Jan 23, 2012 · Bash has evolved over the years taking code from ksh and sh. Adding #!/bin/bash as the first line of your script, tells the OS to invoke the specified shell to execute the commands that follow in the script. #! is often referred to as a "hash-bang", "she-bang" or "sha-bang". edited Mar 11, 2015 at 17:47.
Bash Script : what does #!/bin/bash mean? - Stack Overflow
Dec 14, 2012 · When the first characters in a script are #!, that is called the shebang. If your file starts with #!/path/to/something the standard is to run something and pass the rest of the file to that program as an input. With that said, the difference between #!/bin/bash, #!/bin/sh, or even #!/bin/zsh is whether the bash, sh, or zsh programs are used to ...
How do I execute a bash script in Terminal? - Stack Overflow
A: To "execute this script" from the terminal on a Unix/Linux type system, you have to do three things: 1. Tell the system the location of the script. (pick one) # type the name of the script with the full path. > /path/to/script.sh. # execute the script from the directory it is in. > ./script.sh.
How do I get the directory where a Bash script is located from …
#!/usr/bin/env bash SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd ) is a useful one-liner which will give you the full directory name of the script no matter where it is being called from.
Passing arguments to /bin/bash via a bash script - Stack Overflow
Aug 21, 2012 · 3. Avoid embedding variables into other scripts, pass them on as arguments instead. In this case: bash --login -c 'some_program "$@"' some_program "$@". The first argument after -c '...' is taken as $0, so I just put in some_program there. On a side note, it's an odd requirement to require a login shell.
getting permission to execute a bash script - Stack Overflow
Jun 12, 2016 · To use the bash shell: #!/bin/bash It won't matter what file extension you use - the "shebang" line indicates what shell will be used to execute the script. You could save a script with the "shebang" of #!/bin/bash as script_name.py, but it would remain a bash script. If you attempt to execute it, ./script_name.py, it would be executed as a ...
shell - Why do people write "#!/usr/bin/env python" on the first …
Mar 12, 2010 · using env gives maximum flexibility in that the user can select the interpreter to use by changing the PATH. . Often this flexibility is not required though and the downside is that linux for example can't use the script name for the name of the process in ps and reverts to "pyt
In a Bash script, how can I exit the entire script if a certain ...
Sep 4, 2009 · If you run your script with ./script.sh or bash script.sh, your "window" or shell will stay open, because a new bash process is created for the script. On the other hand, if you run your script with . script.sh or source script.sh, it executes in your current bash instance and exits it …
Run bash script from Windows PowerShell - Stack Overflow
Jul 8, 2009 · 28. It also can be run by exporting the bash and sh of gitbash C:\Program Files\git\bin\ to Windows' environmental variables. In Advance section in the path var kindly add the C:\Program Files\git\bin\ which will make the bash and the sh of the git-bash to be executable from the window cmd. Restart Powershell and then run the shell file as.
Why can't I change directories using "cd" in a script?
If this is the case, simply execute a child bash instance at the end of the script: #!/usr/bin/env bash cd /home/tree/projects/java echo -e '\nHit [Ctrl]+[D] to exit this child shell.' exec bash To return to the previous, parental bash instance, use Ctrl+D. Update. At least with newer versions of bash, the exec on the last line is no longer ...