I have a very simple shell script, called deploy.sh
#!/bin/sh CDIR= $(pwd) echo Hello World! Unfortunately, running it gives the following error:
bird@bird-laptop:~/foo$ sh deploy.sh deploy.sh: 3: deploy.sh: /home/bird/foo: Permission denied Hello World! Any clues, why this is happening?
bird@bird-laptop:~/foo$ ls -l total 156 -rwxrwxrwx 1 bird bird 327 April 18 00:57 deploy.sh -rw-r--r-- 1 bird bird 327 April 18 00:53 deploy.sh~ 4 Answers
Remove the space character after the = in
CDIR= $(pwd) sh doesn't allow any spaces around the =.
CDIR= $(pwd) means "Run the output of pwd with the variable CDIR unset."
As you can't run a folder you get Permission denied.
CDIR= $(pwd) # ...^ You must not have spaces around the = in an assignment.
What this is doing: var=value command is a legal statement. It sets the "var" variable in the environment of the "command", but only in that environment. For your command, the shell sees this:
CDIR= $(pwd) # first, process the $() CDIR= /home/bird/foo # prepare the env with CDIR="" and execute /home/bird/foo # oops, cannot execute /home/bird/foo When you assign a value to a variable in sh (or other shell scripting language), never use any space before and after equal:
CDIR= $(pwd) CDIR=$(pwd)Here is a quote from the given link:
1=
the assignment operator (no space before and after)
Florian is correct, but you're still missing an update
#!/bin/sh CDIR=$(pwd) echo $CDIR echo Hello World! After the value is assigned it must be converted to a string, as you cannot inline a command directly to a variable for display. See here.
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