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small language fixes (oops)

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This commit is contained in:
James Fenn
2020-04-10 17:37:29 -04:00
committed by Corbin Crutchley
parent 485fc8104b
commit e0afe0d576
1 changed files with 6 additions and 7 deletions
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13
content/blog/shell-scripting-basics/index.md
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@@ -138,12 +138,12 @@ Now, let's try putting this together - if we want to ask the user a question, we
read -p "What should the cow say? " input
```
Running this will prompt the user for a line of text, and store its result in a variable named `input` - but how do we
Running this will prompt the user for a line of text and store its result in a variable named `input` - but how do we
use that variable in our code?
The syntax for accessing variables in bash is to simply write their name starting with a dollar sign (`$`). With this,
variables can be embedded in nearly any bash command or argument - they will simply be replaced with the content of the
variable when the command is run. With this in mind, let's rewrite our example with the if command from before...
The syntax for accessing variables in bash is to prefix their name with a dollar sign (`$`). With this, variables can be
embedded in nearly any bash command or argument - they will simply be replaced with the content of the variable when the
command is run. With this knowledge, let's rewrite our example of the `if` command from before...
```shell
read -p "What should the cow say? " input
@@ -183,9 +183,8 @@ No, I'm not joking.
Here, we want to compare two variables for equality - we want to check whether our `$input` variable is equal to
`"woof"`. The "left square bracket" equivalent of this should then be `[ "$input" == "woof" ]`. If the comparison is a
success (meaning that `$input` is "woof"), the exit status will be `0`, which should be interpreted by an `if` command
as "true." Inside our if statement, we can `echo` a message to the user, then use the `exit 1` command to terminate the
script and indicate a failure - if another script wanted to determine the result of ours, it could use this exit code to
do so.
as "true." Inside our if statement, we can `echo` a message to the user, then use `exit 1` to terminate the script and
indicate a failure - if another script wanted to determine the result of ours, it could use this exit code to do so.
```shell
read -p "What should the cow say? " input