Change bash dependency to sh

[polygon]

I was having some issues using ppsfind on an embedded system where no Bash shell was included since the shebang in the file is #!/bin/bash. I've found that the script does not use any bash specific features so I suggest changing the shebang to #!/bin/sh.

[gerasiov]

Nice try, but I'd better rewrite it a little bit, since it has many problems with unquoted $1 etc.

Will you be able to do some minimal test with the folowing version?
7203700

[polygon]

That's even better. Attached is a quick log of some testing. Looks good so far. Here is the system I tested on, unfortunately, my devices do not have anything in the path so I can't test for that.

# uname -a
Linux xlarray 4.14.0-xlarray #12 SMP PREEMPT Wed Oct 24 11:57:34 CEST 2018 aarch64 GNU/Linux
# ls -l /bin/sh
lrwxrwxrwx    1 root     root             7 Sep  7 12:47 /bin/sh -> busybox
# ls /sys/class/pps/
pps0  pps1  pps2  pps3
# ls /sys/class/pps/*/name
/sys/class/pps/pps0/name  /sys/class/pps/pps1/name  /sys/class/pps/pps2/name  /sys/class/pps/pps3/name
# cat /sys/class/pps/*/name
pll_pps.-1
ptp0
ptp1
ptp2
# cat /sys/class/pps/*/path




#

And the test:

# ./ppsfind pll
pps0: name=pll_pps.-1 path=
# ./ppsfind ptp
pps1: name=ptp0 path=
pps2: name=ptp1 path=
pps3: name=ptp2 path=
# ./ppsfind ptp1
pps2: name=ptp1 path=

[gerasiov]

Ok, merged #10 in

[gerasiov]

thanks