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Clarify and improve 2025/yang1/try.sh #301

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Merged
lcn2 merged 1 commit into from
Oct 5, 2026
Merged

Clarify and improve 2025/yang1/try.sh #301

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48 changes: 27 additions & 21 deletions 2025/yang1/try.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -36,25 +36,30 @@ echo 1>&2
seq 5 | ./prog -2
echo 1>&2

# Demonstrate chop function
# Demonstrate chop function if ruby is installed
#
read -r -n 1 -p "Press any key to see the usage message for: ruby prog.c "
echo 1>&2
echo 1>&2
ruby prog.c
echo 1>&2

read -r -n 1 -p "Press any key to run: seq 5 | ruby prog.c 2 "
echo 1>&2
echo 1>&2
seq 5 | ruby prog.c 2
echo 1>&2

read -r -n 1 -p "Press any key to run: seq 5 | ruby prog.c -2 "
echo 1>&2
echo 1>&2
seq 5 | ruby prog.c -2
echo 1>&2
RUBY="$(type -P ruby)"
if [[ -n "$RUBY" ]]; then
read -r -n 1 -p "Press any key to see the usage message for: ruby prog.c "
echo 1>&2
echo 1>&2
"$RUBY" prog.c
echo 1>&2

read -r -n 1 -p "Press any key to run: seq 5 | ruby prog.c 2 "
echo 1>&2
echo 1>&2
seq 5 | "$RUBY" prog.c 2
echo 1>&2

read -r -n 1 -p "Press any key to run: seq 5 | ruby prog.c -2 "
echo 1>&2
echo 1>&2
seq 5 | "$RUBY" prog.c -2
echo 1>&2
else
echo "NOTICE: ruby was not found so we have skipped some commands." 1>&2
fi

# Demonstrate head function
#
Expand Down Expand Up @@ -146,7 +151,7 @@ ${CC} prog_generate.c -o prog_generate && ./prog_generate > prog_classify.c

while true; do
while true; do
read -r -p "Enter an integer between 1 and 9999, or 0 to quit: " number
read -r -p "Enter an integer between 1 and 9999, or 0 to go to next step: " number
echo 1>&2

if ! [[ "$number" =~ ^[0-9]+$ ]]; then
Expand Down Expand Up @@ -180,12 +185,13 @@ while true; do
echo 1>&2
done

# Final parting messages
# Final parting messages if perl installed
#
PERL="$(type -P perl)"
read -r -n 1 -p "Press any key to run: perl prog.c "
echo 1>&2
echo 1>&2
perl prog.c
"$PERL" prog.c
echo 1>&2

read -r -n 1 -p "Press any key to run: ./bf prog.c "
Expand Down
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