Homework & Coursework Questions

uname -a

$ echo hello:boss | cut -d: -f2
boss
$ echo hello:boss | cut -d: –f2
usage: cut -b list [-n] [file ...]
       cut -c list [file ...]
       cut -f list [-s] [-d delim] [file ...]

$ echo hello:boss | cut -d: -f2
+ echo hello:boss
+ cut -d: -f2
boss

$ echo hello:boss | cut -d: –f2
+ echo hello:boss
+ cut -d: $'?\200\223f2'

-   d   '   %   '       –  **  **   f   1

cut -f 1 -d '%'

echo hello:boss | cut -d: -f2

echo hello:boss | cut -d: -f2

sed -n l scriptname

#!/bin/sh$
# set -x # Uncomment to debug this script$
# set -n # Uncomment to check syntax without any execution$
# Shell script to monitor or watch the disk space$
####Main Script####$
$
df -H | grep -vE '^Filesystem | none' | awk '{ print $1 " " $5 }' | whi\
le read$
do$
 echo $output$
 perc=$(echo $output | awk '{ print $1 }' | cut -d'%' \226f1)$
 part=$(echo $output | awk '{ print $2 }' )$
$
 if [ $perc -ge 90 ]; then$
 echo "Critical Warning: Filesystem \\"$part\\" at \223$perc\224% of capacity\
 | $
 mail -s "Critical Warning: Filesystem \\\224$part\\\224 at \223$perc\224% of\
 capacity\224$
$
 elif [ $perc -ge 70 && $perc -lt 90 ]; then$
 echo "Warning: Filesystem \\"$part\\" at \223$perc\224% of capacity | $
 mail -s "Warning: Filesystem \\\224$part\\\224 at \223$perc\224% of capacity\
\224$
$
 fi$