Qshell Interpreter (qsh) - FTP Directory Listing - IBM

then list4 ] ...
[ else list5 ]
case conditional construct
while loop
until loop
fi
First, qsh runs list1 and if its exit status is zero then qsh runs list2. Otherwise, each
elif list3 is run and if its exit status is zero then qsh runs list4. Otherwise, qsh runs
list5.
The syntax of the casecommand is
case word in
pattern1 ) list1 ;;
pattern2 | pattern3 ) list2 ;;
...
26 Qshell Interpreter (qsh)
esac
qsh expands each pattern in turn and sees if it matches the expansion of word.
When there is a match, qsh runs the corresponding list. After the first match, no
more patterns are expanded. See “Shell Patterns” (page 18) for more details on
patterns.
The syntax of the while command is
while list1
do list2
done
qsh runs the two lists repeatedly while the exit status of list1 is zero. When the exit
status of list1 is non-zero the command completes.
The syntax of the until command is
until list1
do list2
done
qsh runs the two lists repeatedly while the exit status of list1 is non-zero. When the
exit status of list1 is zero the command completes.