$ cat hello.tl
(pprinl "hello, world")
$ strace txr hello.tl 2>&1 > /dev/null | wc -l
77
$ cat hello.c
#include <stdio.h>
int main(void) { printf("Hello, world\n"); }
$ cc -O hello.c -o hello
$ strace ./hello 2>&1 > /dev/null | wc -l
29
$ strace gawk 'BEGIN { print "hello") }' 2>&1 > /dev/null | wc -l
84 $ cat HelloWorld.java
public class HelloWorld
{
public static void main(String[] args)
{
System.out.println("Hello, world");
}
}
$ strace java HelloWorld 2>&1 > /dev/null | wc -l
122 $ strace python -c "print('hello world')" 2>&1 > /dev/null | wc -l
924
$ strace python3 -c "print('hello world')" 2>&1 > /dev/null | wc -l
543 % strace perl -e "print 'Hello, World';" 2>&1 > /dev/null | wc -l
192Using your example:
$ strace python3 -c 'print("hello world", end="")' 2>&1 | hist
1. stat 122
2. rt_sigaction 68
3. fstat 67
4. read 55
5. close 47
6. open 37
7. mmap 34
8. lseek 30
9. getdents 18
10. mprotect 16
...
TOTAL: 567
$ strace python3 -S -c 'print("hello world", end="")' 2>&1 | hist
1. rt_sigaction 68
2. stat 51
3. fstat 39
4. mmap 31
5. read 27
6. close 26
7. open 23
8. mprotect 16
9. lseek 15
10. brk 10
...
TOTAL: 350 $ strace node -e 'console.log("hello world")' 2>&1 > /dev/null | wc -l
30467
$ strace txr -e '(put-line "hello")' 2>&1 > /dev/null | wc -l
70
Obviously there are those who care about reasonable startup times and, ... others. :)
By the way, TXR supports setuid operation, and so it makes a few extra syscalls to check its security situation (am I running setuid? setgid?)