Linked Questions

Is there any reason for doing something like: a="abc" or a='abc' The quotes seem completely superfluous, but then there might be some hideous corner case... I'm interested in Bash and Sh in ...

I always do this when passing variable to command mkdir -p "$dir_to_make" are those quotes needed? I tried to google but didn't find much. I always write them, just interested if they are necessary.

I'm confronted with an escape challenge: The process: Step 1 - the file retrieval: Within bash, find command will be invoked. Find commands output is 1 single file with a path like this: ./vacation/...

I have a file like this /* Created by Bla bla bla Copyright by XYZ December 20th, 2020 */ "car" = "Carro"; "door" = "Porta"; I would like to read ...

I have written a Bash script which doesn't behave quite as I expected. It contains the following lines of code. TARGET_FOLDER=$1 echo "TARGET_FOLDER: $TARGET_FOLDER" if [ ! -d $TARGET_FOLDER ...

I have an awk command piped to the output of another command | awk {'print $2,$3'}. When I run this command the output displays the data in columns, of the columns as I would expect column2 column3 a ...

I'm trying to search my Movies folder to find the immediate folder of the .MKV file I'm searching for. The below works (echo 5) to save the immediate folder as a variable, BUT, it does not work if $...

I know the typical way is echo "$PATH", for example. But echo $PATH also works. Also, you don't need the echo command even, you can just type $PATH, and the value of path will be outputted ...

I am using Gammu for receiving SMS. Once received I am sending them as emails. Yet if sender ID of the SMS contains space, my script is unable to process a file. I.e.: If the file name is ...

Inside [[ ]] I do not need to quote variables right? Rather than if [[ "$flrm" == *"org"* || "$flrm" == "all" ]]; then printf '%s\n' "Delete: $fl" ...

I'm a linux noob. When I type echo $(cal) in bash it prints calendar without any formatting. But when i type echo "$(cal)" it prints the complete formatted calendar. What is the distinction ...

I am working on a self project which is an API server. I am trying to test my api routes using curl command with bash scripts. The curl commands for post requests are pretty long so I want to use a ...

In zsh: % RESPONSE=$(ping -c 1 raspberrypi4b.local) % echo $RESPONSE | grep "% packet loss" 1 packets transmitted, 1 packets received, 0.0% packet loss But in bash it's different: $ RESPONSE=$(...

I'm wondering where a new path has to be added to the PATH environment variable. I know this can be accomplished by editing .bashrc (for example), but it's not clear how to do this. This way: export ...

The following bash syntax verifies if param isn't empty: [[ ! -z $param ]] For example: param="" [[ ! -z $param ]] && echo "I am not zero" No output and its fine. But when param is ...