knowledge/awesome-cheatsheets
1
1
Fork 0
mirror of https://github.com/namibia/awesome-cheatsheets.git synced 2024-11-24 13:47:36 +00:00
Code Issues Releases Activity

Merge pull request #192 from SabryTarek/master

Browse Source 
add equivalent to bash command
This commit is contained in:
Julien Le Coupanec 2021-04-16 18:08:15 +02:00 committed by GitHub
commit b6dc8fb718
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
languages/bash.sh
View File

@ -192,6 +192,7 @@ declare -r # makes the variables read-only
declare -x # marks the variables for export via the environment
${varname:-word} # if varname exists and isn't null, return its value; otherwise return word
${varname:word} # if varname exists and isn't null, return its value; otherwise return word
${varname:=word} # if varname exists and isn't null, return its value; otherwise set it word and then return its value
${varname:?message} # if varname exists and isn't null, return its value; otherwise print varname, followed by message and abort the current command or script
${varname:+word} # if varname exists and isn't null, return word; otherwise return null