Why I always get a syntax error in bash script

Question

I have the following function in bash, who was previously in the case part of a switch, but no matter where I put it I always get a syntax error

    do_start(){
    if[f $PIDFILE]; then
    echo "supervisord already running: $PIDFILE" exit 1 
    fi
    log_begin_msg "Starting Supervisor daemon manager..."
    start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $SUPERVISORD -- $OPTS || log_end_msg 1
    log_end_msg 0
    }

and I get:

    runScript.sh: Syntax error: "then" unexpected (expecting "}")

I don't know what is going on please help

Answer 1

Spaces around [ and ] are needed and I think you meant -f to check if this is a file.

You need to replace:

if[f $PIDFILE];

by:

if [ -f "$PIDFILE" ];

OR better (since you're using BASH)

if [[ -f "$PIDFILE" ]];