nix-bitcoin/examples/start-bash-session.sh
Erik Arvstedt 0f1ee5f533
examples: improve shell session usability
- Add usage prompt when starting shell sessions

- Give all examples an uniform interface ("c") for running commands
  or starting a shell on the node.
2020-05-17 23:53:32 +02:00

16 lines
532 B
Bash

# Start an interactive bash session in the current bash environment.
USAGE_INFO='
Starting shell...
Run "c COMMAND" to execute a command on the bitcoin node
Run "c" to start a shell session inside the node'
# BASH_ENVIRONMENT contains definitions of read-only variables like 'BASHOPTS' that
# cause warnings on evaluation. Suppress these warnings while sourcing.
BASH_ENVIRONMENT=<(declare -p; declare -pf) \
USAGE_INFO="$USAGE_INFO" \
bash --rcfile <(echo '
source $BASH_ENVIRONMENT 2>/dev/null
echo "$USAGE_INFO"
')