Shell 脚本回显问题

Question

In this if condition for shell script, i want print user full name + exist(if the file..../pub_key.asc found)or not exist if the mentioned file not found .

for file in $FILES
do
if [ -f  /home/$file/public_html/pub_key.asc ]; then
     echo $(cat /home/$file/etc/passwd | head -n | cut -d: -f1) : Exists
else
    echo  $(cat /home/$file/etc/passwd | head -n | cut -d: -f1) : Not exists!
fi
done

But i get errors because there is something wrong with first echo in if..condition. Can someone show tell me what i did worng in the echo statement? and how to fix? appreciate your suggestions. :)

Answer 1

You are probably getting an error due to head -n command

head -n has to be followed by a number, eg head -n 1 , or head -1