How does "cat << EOF" work in bash?

I needed to write a script to enter multi-line input to a program (psql). After a bit of googling, I found th

Eddie

0 1 0 9

asked 07 September, 2021

How to count lines in a document?

I have lines like these, and I want to know how many lines I actually have... 09:16:39 AM all 2.00 0.0

Luis

0 1 0 9

asked 07 September, 2021

How can I declare and use Boolean variables in a shell script?

I tried to declare a Boolean variable in a shell script using the following syntax: variable=$false variable

Freida

0 1 0 9

asked 07 September, 2021

How do I prompt for Yes/No/Cancel input in a Linux shell script?

I want to pause input in a shell script, and prompt the user for choices. The standard Yes, No, or Cancel type

Kristopher

0 1 0 9

asked 07 September, 2021

How to mkdir only if a directory does not already exist?

I am writing a shell script to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to

Yolando

0 1 0 9

asked 07 September, 2021

How do I split a string on a delimiter in Bash?

I have this string stored in a variable: IN="[email protected];[email protected]" Now I would like to split the stri

Lynette

0 1 0 9

asked 07 September, 2021

Is there a way to run Python on Android?

Elicia

0 1 0 9

asked 07 September, 2021