You can also use read to accept user input. Pretty simple, yeah? That script will read in the input from the command line and substitute it as the destination directory at the target system, as well as the local directory that will be synced.
It might look a bit complex as a final script, but each of the bits that you need to know to put it together are pretty simple. Of course, this is just scraping the surface of bash scripting. About Us. Sign in. Forgot your password?
Get help. It's also bash specific, but perhaps bash's behavior has changed? In any case, the bash manual doesn't mention fd , so it's probably unwise to depend on this behavior. Interactive shell! I had success with this when running a script by itself or by using sudo, but not when calling source. And it fails when cd is configured to print the new path name.
The shortest and most elegant way to do this is:! I haven't tested it across different systems. But this solution is the one that works right away at least on Ubuntu, for me! And of course dirname gets the parent directory of the path. Doesn't work if the script is being sourced from another script. This will prevent popd after a failed pushd. Thanks to konsolebox. This works perfectly to get the "real" dirname, rather than just the name of a symlink.
Thank you! I'm generally a fan of inlining logical conditionals, but what was the specific error that you were seeing in the pushd? Fuwjax Natural practice to avoid doing popd in cases even when rare where pushd fails. The action may vary depending on what may seem logical or what one user could prefer but certainly, doing popd is wrong.
This is the real one! Works with simple sh too! Notinlist Not so. I added second pair of quotes around dirname call. Needed if the directory path contains spaces. All I want to know is, why this way is not good? It seemed no bad and correct for me. Could anyone explain why it's downvoted? On Linux, realpath is a standard utility part of the GNU coreutils package , but it is not a bash built-in i. The order of the operations in this answer is wrong.
The solution described in this answer just gets the path of the directory where the symlink it stored, not the directory of the target. Furthermore, this solution is missing quoting. It will not work if the path contains special characters.
Show 2 more comments. It breaks if you source or. This is Perl -like! A coincidence? Script-Dir-Relative I think my answer is ok because it is hard to find a simple working edition. Here you can take the code you like e. I am not sure that all parts exist before and most answers are complex and overloaded. Here you can pike out the code you like to use. At least please do not remove it as I need in the future :D — User This works in Bash 3. This will always work.
The point on which is very debatable. Not at all. How to obtain the full file path , full directory , and base filename of any script being run itself For many cases, all you need to acquire is the full path to the script you just called.
References: How to retrieve absolute path given relative. Gabriel Staples Gabriel Staples These seem to handle all of the crazy edge cases that arise from your favorite combination of: Absolute paths or relative paths File and directory soft links Invocation as script , bash script , bash -c script , source script , or.
DanDascalescu Using the one-liner? Or the full code snippet at the bottom? Possible duplicate of How to run find -exec? Add a comment. Active Oldest Votes. Improve this answer. Community Bot 1. Chomel J. Chomel 1 1 gold badge 3 3 silver badges 19 19 bronze badges. Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. Double quoted strings are also important for use with variables, as we'll see in the next section.
Let's edit our hello-world example to use a variable for the entity being greeted, which is World. Double quoted strings are required for interpolating variables. Within a single quoted string, the dollar sign would be interpreted literally.
Another way you might see variables written is surrounded by curly brackets along with the dollar sign, which is known as parameter expansion. This syntax is necessary for anything more complex you might do with a variable, such as getting one item from an array. If you would like to use the output of a shell execution within a string, you can do so with a dollar sign followed by parentheses. For example the whoami command will print out your current user. To use it within a string, wrap whoami in the shell execution syntax.
We declared a variable in the last example, but we can also have the user set the value of a variable dynamically. For example, instead of just having the script say Hello, World! We'll do this using the read command. In order to compare numbers , you will use the operators in the number comparison column, such as -lt for less than. The condition goes in square brackets. Bash uses for , while , and until loops.
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