Whats the difference between ll and ls command?
Where can i get the set of commands in UNIX?
What is a shell?
If i am working on UNIX, What do i need to know?
Can you tell me some basic scripts in unix?
I know its long but urgent..

Question asked by visitor sameer

there is no command called as ll.
ls displays the files in current directory.
if you want set of commands in unix then press tab twice in the terminal.
for in detail about a particular command you can use man command

Hi,

You may refer to unixguide.net for basics of UNIX.

Here is an example of shell script which will show you disk space.

#!/bin/ksh


init()
{

day=`date |tr -s " " "-"|tr -s ":" "."`
lpat=/home/cmabct/vinod
mach=`uname -s`
myn=`uname -n`
mailp=/usr/sbin/sendmail
ids=${lpat}/dsk_ids.txt

logs=${lpat}/LOGS/dsk_${day}.txt
limit=${lpat}/LOGS/tmp_dsk.txt

##############################
#


sub="Subject: Disk Space Status($myn) on $day"
header="Filesystem kbytes used avail %used Mounted on"


if [ ! -d ${lpat}/LOGS ]
then
mkdir -p ${lpat}/LOGS
fi
if [ ! -f $ids ]
then
return 1
fi

>$logs
>$limit
}

cmds()
{
case $mach in
HP-UX) bdf | egrep "9[0-9]%|100%" > $limit;;
SunOS) df -lkF ufs > $logs
df -lkF tmpfs >> $logs
cat $logs | egrep "9[0-9]%|100%" > $limit
mailp=/usr/lib/sendmail;;
Linux) df -h | egrep "9[0-9]%|100%" > $limit;;
*) rm $logs $limit
return 1
esac
}

creatfile()
{
if [ -s $limit ]
then
> $logs
cat $ids >$logs
echo "$sub\n\n">>$logs
echo "$header">>$logs
cat $limit >>$logs
sleep 1
$mailp -t < $logs
else
rm $logs $limit
return 1
fi
}


mast()
{
init
if [ $? -ne 1 ]
then
cmds
fi

if [ $? -ne 1 ]
then
creatfile
fi
if [ $? -ne 1 ]
then
rm $limit
fi
}



Thanks,
Amit Shiknis

Hi,

You may refer to unixguide.net for basics of UNIX.

Here is an example of shell script which will show you disk space.

#!/bin/ksh


init()
{

day=`date |tr -s " " "-"|tr -s ":" "."`
lpat=/home/test/test
mach=`uname -s`
myn=`uname -n`
mailp=/usr/sbin/sendmail
ids=${lpat}/dsk_ids.txt

logs=${lpat}/LOGS/dsk_${day}.txt
limit=${lpat}/LOGS/tmp_dsk.txt

##############################
#


sub="Subject: Disk Space Status($myn) on $day"
header="Filesystem kbytes used avail %used Mounted on"


if [ ! -d ${lpat}/LOGS ]
then
mkdir -p ${lpat}/LOGS
fi
if [ ! -f $ids ]
then
return 1
fi

>$logs
>$limit
}

cmds()
{
case $mach in
HP-UX) bdf | egrep "9[0-9]%|100%" > $limit;;
SunOS) df -lkF ufs > $logs
df -lkF tmpfs >> $logs
cat $logs | egrep "9[0-9]%|100%" > $limit
mailp=/usr/lib/sendmail;;
Linux) df -h | egrep "9[0-9]%|100%" > $limit;;
*) rm $logs $limit
return 1
esac
}

creatfile()
{
if [ -s $limit ]
then
> $logs
cat $ids >$logs
echo "$sub\n\n">>$logs
echo "$header">>$logs
cat $limit >>$logs
sleep 1
$mailp -t < $logs
else
rm $logs $limit
return 1
fi
}


mast()
{
init
if [ $? -ne 1 ]
then
cmds
fi

if [ $? -ne 1 ]
then
creatfile
fi
if [ $? -ne 1 ]
then
rm $limit
fi
}
mast


Thanks,
Amit Shiknis