UNIX for Dummies Questions & Answers

#!/bin/bash

read "cat file" // User will input command cat file_name.c
if [ '$file == $file.c ]; // Must be a .c file
then
  sed '/ /,/ /d' 
else
 exit // Any other file won't change
fi

#!/bin/bash

echo -n "Enter file name: "
read file
case $file in
  *.c)
    echo $file
    ;;
  *)
    exit
    ;;
esac

sed '/ /,/ /d'

#!/bin/bash

read "cat file" // User will input command cat file_name.c
if [ '$file == $file.c ]; // Must be a .c file
then
  sed '/*/,/\//d' 
else
 exit // Any other file won't change
fi

$ cat test.sh
#!/bin/bash

echo -n "Enter file name: "
read file
echo $file | grep -q "\.c$"
if [ $? -eq 0 ]; then
  echo $file
else
  exit
fi

sed '/*/,/\//d'

$ cat test.c
int x = 5; /* comment 1 */
int y = 3; /* comment 2 */
int z = 8; /* comment 3 */

$ sed '/*/,/\//d' test.c
(no output - everything deleted)

 sed -e 's/\/\*.*\*\///g'<test.c

char *str = "/* Hi there, I'm a C comment */";
/*
int really_incredibly_long_variable_name_i_dont_want_my_teacher_to_see;
*/

#!/usr/bin/perl
$s=join("",<>);
$s=~ s/("(\\\\|\\"|[^"])*")|(\/\*([^*]|\*(?=[^\/]))*\*\/)|(\/\/.*)/$1 /g;
printf "%s",$s;