Joined
Last Seen
0 Reputation Points
Unknown Quality Score
No one has voted on any posts yet. Votes from other community members are used to determine a member's reputation amongst their peers.
0 Endorsements
Ranked #107.79K
1 Posted Topic
when i read linux boot scripts, i often meet this expression: ${1:-}. i can't understand it. what's more, i don't understand this condition: [ -z "${1:-}" ] too. anyone can help me ? thanks!!!
The End.