Question

UNIX/LINUX Help. I need to modify this script so that the output of the file name is changed from you_someAssignment.txt to You.someAssignment.txt.

#!/bin/sh

if [ $# -eq 1 ]; then
   STUDENTNAME=$USER
   ASSIGNMENT=$1
else
   echo "usage: `basename $0` [assignment]"
   exit 1
fi

if [ ! -d "$ASSIGNMENT" ]; then
  # Control will enter here if $ASSIGNMENT doesn't exist.
  mkdir $ASSIGNMENT
fi

# Move into the directory
cd $ASSIGNMENT

# Variable for the filename
FILENAME=$USER\_$ASSIGNMENT.txt

HOST=$(hostname)

DATE=$(date +"%m-%d-%Y")
TIME=$(date +"%r")

if [ -f "$FILENAME" ]; then
        sed -i "2s/.*/$HOST/g" "$FILENAME"
        sed -i "3s/.*/$DATE - $TIME/g" "$FILENAME"
else 
        printf "%s\n" "$USER" > $FILENAME
        printf "%s\n" "$HOST" >> $FILENAME
        printf "%s" "$DATE" >> $FILENAME
        printf " - %s\n" "$TIME" >> $FILENAME
fi

Answer 1

Given below is the modified code. The changed line is bolded.

#!/bin/sh

if [ $# -eq 1 ]; then
STUDENTNAME=$USER
ASSIGNMENT=$1
else
echo "usage: `basename $0` [assignment]"
exit 1
fi

if [ ! -d "$ASSIGNMENT" ]; then
# Control will enter here if $ASSIGNMENT doesn't exist.
mkdir $ASSIGNMENT
fi

# Move into the directory
cd $ASSIGNMENT

# Variable for the filename
FILENAME=$USER.$ASSIGNMENT.txt

HOST=$(hostname)

DATE=$(date +"%m-%d-%Y")
TIME=$(date +"%r")

if [ -f "$FILENAME" ]; then
sed -i "2s/.*/$HOST/g" "$FILENAME"
sed -i "3s/.*/$DATE - $TIME/g" "$FILENAME"
else
printf "%s\n" "$USER" > $FILENAME
printf "%s\n" "$HOST" >> $FILENAME
printf "%s" "$DATE" >> $FILENAME
printf " - %s\n" "$TIME" >> $FILENAME
fi