Need help with Linux Case Study !!!!! Just a few questions!!

clarkebar · 05-30-2001, 08:11 AM

ANY HELP WITH THESE QUESTIONS WILL BE APPRIACATED....I have a shell scripting class that has me by the balls and I need to get past the scripting class so I can continue to the Networking and syatem admin stuff.

I need commands to do the following:

I would like to use the SECONDS variable so it will display how long the user is Idle after entering a menu.

How can I tell the oldest & newest files in a directory?
2 different commands!

User Information: a commmand that will display my user name, user ID, Group ID, Group name, Menbers in my group.

In the format of:
User=XXXXXXX user#=XXX group#=XXXX
grp name=XXXXX members=XXXXX,XXXXX

Find files older than 10 days.

Exiting to a sub shell.

ANY HELP WITH THESE QUESTIONS WILL BE APPRIACATED..

crabboy · 05-30-2001, 10:27 PM

Here are some examples to get you started. The find command is simple, use the correct time flag with +10, look t the man page.

Code:

#!/bin/sh

SECONDS_ELAPSED=0
CURRENT_SECONDS=0
LAST_SECONDS=0

# Call TimeStamp before and after what you want to time.
TimeStamp()
{
   CURRENT_SECONDS=`date +%s`
   SECONDS_ELAPSED=`expr $CURRENT_SECONDS - $LAST_SECONDS`
   LAST_SECONDS=$CURRENT_SECONDS
}

TimeStamp
sleep 5  # Prompt for input here
TimeStamp
echo "Seconds: [$SECONDS_ELAPSED]"  # Will be 5 seconds

echo "Newest:"
ls -t | head -1
echo "Oldest:"
echo "easy"

ID_OUTPUT=`id`
USER=`echo $ID_OUTPUT | awk  '{ print $1 }'`
GROUP=`echo $ID_OUTPUT | awk  '{ print $2 }'`
GROUPS=`echo $ID_OUTPUT | awk  '{ print $3 }'`

USER_ID=`echo $USER | cut -d'(' -f1 | cut -d'=' -f2`
USER_NAME=`echo $USER | cut -d'(' -f2 | sed 's/)//'`

echo $USER_ID
echo $USER_NAME

# Do the same for group.

# Something similar for groups, but you will have to loop over the
# results since there is an unknown number of them.  Use the shell
# favorites: sed, cut, and awk to chop up the results.

clarkebar · 05-31-2001, 07:45 AM

I'm gonna give this code a run tonight. Thank you, very much.
A person in need

clarkebar · 06-01-2001, 08:54 AM

Thanks for your help from the other day I'm almost there!
I need to make the #2 option in the menu work. Using the find and more commands.

# this is the GENERIC UTILITIES menu
t=$(date "+%H:%S:%M")
c=$(tput rmso)
dd=$(date "+%b %d %Y")
b=$(tput bold)
while true
do
tput clear
cat << MENU

$LOGNAME GENERIC UTILITIES date - ${b}${dd}${c}

1. ${b}U${c}ser Information?

2. ${b}F${c}ind files older than 10 days

3. ${b}E${c}xit to sub-shell

4. ${b}Q${c}uit menu

User Selection: at ${b}${t}${c}
MENU
tput cup 20 15
read ans
case $ans in

1|U|u) # showuserinfo - print info about user from /etc/passwd and the
#/etc/group
IFS=":" # sets the field seperator to a colon
set -- $(grep $LOGNAME /etc/passwd)
echo "User=[$1] user#=[$3] group#=[$4]"
IFS=":"
set -- $(grep $4 /etc/group)
echo "grp name=[$1] members=[$4]
Press ENTER to continue"
read ans1
;;

2|F|f) #finding files older than n days using- #the find and more commands
#echo "How many day's old?[n]"
#find *.* (???THIS IS WHERE I'M HAVING TROUBLE??)|more
#echo "Please press ENTER to continue"
;;

3|E|e) bash; continue
;;

4|Q|q) exit
;;

esac
done