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this is very tricky..I like it.

Hi,

I don't understand && and || in this context. I thought && is for logical 'AND' and || is for logical 'OR'.

[ ! -z "$var" ] && echo "Not empty" || echo "Empty"

Please help


Thank You

Hi,

so what I understood is that the cpu time is very small for my process to show, thats why i am getting 0:00. Also i guess this process is doing some IO or other operation(s) majority of the...

Hi,

can you please shed some light on , what is compute bound?

Thank you

Hi,

I ran a script named cat item
when I searched for this script using command PS
I get two process . I don't understand this. Also this script has run for 15 minutes but the time is showing as...

I believe this link will be of some use

The UNIX School: ps command : what does the TIME indicate? (http://www.theunixschool.com/2012/09/ps-command-what-does-time-indicate.html)

I am using HP-UX,KSH

$ jobs -l
[1] + 19377 Running nohup ksh cat_Duplicate_Records_Removal.ksh </dev/null >/dev/null 2>&1 &
$ ps -p 19377 -fl
F S UID PID PPID C...

I think the command 'at' can be also used to run scripts without getting stopped on logout.

at command (http://www.softpanorama.org/Utilities/at.shtml)

The command 'at' can be scheduled to run...

yes i have a problem.(I started playing around with PS becasue of the below issue). Can you please suggest an alternative method for 'disown' command as its not supported in my HP-UX...

F S UID PID PPID C PRI NI ADDR SZ WCHAN STIME TTY TIME COMD
401 S catmgr 5748 5742 0 154 20 e0000006d48cd080 133 e0000003fb6e7200 11:22:32 ? ...

Ok..i have rewritten the command as follows

nohup ksh cat_Duplicate_Records_Removal.ksh </dev/null >/dev/null 2>&1 &

earlier when i run the command in background and when enter(CR) is pressed...

ok i ran the script in background

$ nohup ksh cat_Duplicate_Records_Removal.ksh >/dev/null 2>&1 &
[1] 6679
$ exit
You have running jobs
[1] + Stopped (tty output) nohup ksh...

Thank You..
but my script is not writing anything to the terminal(I have redirected all output to logfile).
I ran the script in foreground and it completed successfully without sending any...

Hi,

I want to run a shell script in background .
but its going to stopped state


$ ksh cat_Duplicate_Records_Removal.ksh &
[2] 8975
$
[2] + Stopped (tty output) ksh...

type find xargs
find is /usr/bin/find
xargs is /usr/bin/xargs

Hi,

Can anyone tell me an alternative for -0 argument of xargs.

my os is HP-UX

find . -name "*.sh" -print0 | xargs -0
xargs: unknown option: -0



Thanks

I understood the logic..its was a great debugging tip to get the content of Pattern space. That was a new learning for me . But for some reason this command was not working in HP-UX without -e
...

This command is actually removing blank lines from the end of my file.I have tested it.Its true that this line is not reading any \n from the file and appeding to the pattern space, but N in this...

Hi,

I have the following command.(Delete all trailing blank lines at the end of a file.)

sed -e :a -e '/^\n*$/{$d;N;ba' -e '}'

I don't understand the logic of this command and also I don't...

Hi,

cat test.txt
BlankLine
BlankLine
BlankLine
BlankLine
ello
hi
helo
BlankLine
BlankLine
heylo
BlankLine
BlankLine
BlankLine
done
BlankLine
BlankLine
BlankLine

Can you please explain with contents in test.txt

in the input file
__________________
before 'a' there are 3 blank lines.
before 'c' there are 3 blank lines.
before 'e' there is 1 blank line....

cat test.txt


a



c
d

e


g

Hi Don,

Can you please tell me why -o is used. I am confused,because both conditions in the brackets have to be satisfied right. So can we use an 'and' condition.

Thank You

Can you please figure out what is the issue here

$ find . -maxdepth 1 -type f -size 0 -print
find: bad option -maxdepth


please find the OS details
$ uname -a
HP-UX g5u1216 B.11.31 U ia64...

Hi Corona688,

Thank You so much , Removal of space before and after the = helped.

Thank You for the valuable suggestions