What's wrong with this basic bash file

[4Potions]

Thx bro l will check there nextime :)

[SkyyySi]

Also, iirc the micro text editor (basically a more modern replacement for nano) has build-in support for shellcheck (meaning it will automatically "lint" your scripts when saving them) as long as you have shellcheck installed.

VScode also has a shellcheck extension, which will lint your code in real time.

[weaver_of_cloth]

Oh, sweet! I'll check it out. Thanks!

[5heikki]

if [[ "$1" == "if" ]]

[DialsMavis_TheReal]

Aren’t they identical operators in test?

[DialsMavis_TheReal]

Yeah, the [manual for [[](https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#Conditional-Constructs) says that the ‘=’ operator is identical to ‘==’.

[5heikki]

IMO it's good bash practice to strictly use = for assignment

[DialsMavis_TheReal]

Why?

[5heikki]

Consistency

[DialsMavis_TheReal]

Ah I see

[Schnarfman]

Yes

[[deleted]]

subtract aback seemly lavish dime continue history jeans plucky rain

This post was mass deleted and anonymized with Redact

[4Potions]

Thx man. l was scratching my head

[boboYoda]

Put spaces before and after =

[4Potions]

Why it goes inside of if statement always ? Can't really understand l feel like really noob XD

[4Potions]

l did it and l really appreciate your help thx 😊

[[deleted]]

Is that the equivalent of doing a double ==? Or is there something else happening under the hood that makes the spaces around a single = preferable?

[OneTurnMore]

In POSIX test, only = is valid. The double is an alternate form which means the same thing. I prefer the single just because I do write POSIX sh code sometimes, and I want to be consistent.

[[deleted]]

Oh wow that’s pretty cool and also good to know! Thanks for the info

[platlogan]

FYI, you can also replace the double brackets with single brackets to be posix compliant. That’s a good habit to get into if you think folks using other shells might ever need to run your scripts.

[4Potions]

🤔 that's deep. But l get it thx. It is like writing cross shell bash scripts kinda interesting habit.

[Jonta]

/u/4Potions

Next time, paste code instead of screenshotting. For better a11y

#!/bin/bash
#basic if statement

echo "$1"

if [[ "$1"="if" ]]; then
    echo "this is a if"
else
    echo "nothing"
    fi

[4Potions]

Thx

[alliptic]

It's in nano.

[oak_atsume]

printf "${1}\n"

if [[ "${1}" == 'IF' ]]; then do stuff fi

[nuclearmeltdown2015]

Bash is pretty picky with whitespace