No, this script cannot be converted to an ash script.

Your problem is here

sed -n "s/<idle>600<\/idle>/<idle>900<\/idle>/p" $f >> $f

You need to use either the -i option to GNU sed to permit in place editing or save the output to a temporary file...

I suggest you start top in batch mode and with the number of iterations set to 1. This way you take a a quick snapshot of things and save it to a file.

One way is to use an ed script. For example

$ cat ed.script
/ssl-qop-mgmt-default/a
default = DES-168
default = RC2-128
default = RC4-128
#default = ALL
.
+1d

awk -F'[ :]' ' NF == 8 {print $4}' input.txt

What is the output from running the following 2 commands: df, mount

Yes, shell scripting can be used on the Microsoft Windows command line. All of the modern shells have been ported to this evironment including bash and ksh93. Speed of execution depends on your...

You do not need to use the pipe. Instead use redirection

echo -e "10\n20\n100\n200" > file.txt

number=0
while read line
do
if test $line -gt 100
then
number=$line

You need to format your output using printf instead of using print.

$ awk '{ if ($3 > 40) four="yes"; else four="no"; print $0, four }' file
1 abc 67 yes
2 def 40 no
3 uty 57 yes
$

Don't forget to initialize the sequence of random numbers by assigning a numeric value to RANDOM before you start retrieving them. Otherwise you may get the same set of numbers each time. See...