Most of them are missing quotes, `` -> $(), and -o/-a usage in conditions. Also add few directives disabling checks where were too verbose.
		
			
				
	
	
		
			12 righe
		
	
	
		
			356 B
		
	
	
	
		
			Bash
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			12 righe
		
	
	
		
			356 B
		
	
	
	
		
			Bash
		
	
	
		
			Executable File
		
	
	
	
	
#!/bin/sh
 | 
						|
 | 
						|
# it is in format of `date -u -Iseconds`, example: 2014-09-29T22:59:21+0000
 | 
						|
# it comes from dom0, so is trusted
 | 
						|
read -r timestamp
 | 
						|
timediff=$(( $(date -u +'+%Y%m%d%H%M%S') - $(date -u -d "$timestamp" +'+%Y%m%d%H%M%S') ))
 | 
						|
if [ "$timediff" -le 2 ] && [ "$timediff" -ge -2 ]; then
 | 
						|
    # don't bother
 | 
						|
    exit 0
 | 
						|
fi
 | 
						|
date -u -s "$timestamp" >/dev/null
 |