How to resolve error "SQL0104N" when running "db2 prune logfile prior to" command?

I wrote an script to delete transaction log files in db2. I need to delete all the files prior to the active log file.I wrote this code as .sh file db2 connect to DWHDB db2 get db cfg | grep '/tlogdir/DWHDB/NODE0000/LOGSTREAM0000' db2 get db cfg | grep "First active log file">sample.txt x= awk '{print substr($0,60,12)}' sample.txt db2 prune logfile prior to $x When I execute above code following error came SQL0104N An unexpected token "END-OF-STATEMENT" was found following "TO". Expected tokens may include: "". SQLSTATE=42601 How to fix this issue?