Search Results

I would write tail -n +2(with space). I think this is the "most canonical" form. On very old Unixes, the first variants of head and tail did not provide the -n switch. Then, for some time, I found it...

It principally reads: if tail +2 doesn't work for you (it does on my computer), try tail -n+2. Generally: check the man page for your tool & version to find out what it provides and what it misses.
...

It frequently helps to consult the man pages. man tail:

You can also use awk:


awk "NR >= $from_line && NR <= $to_line {print}" $filename

Try

head -7 file | tail +2
hello asia
hello europe
hello africa
hello america
hello antartica
hello australia

Did you consider the head and tail *nix commands?

Hello,

I would imagine that under normal circumstances the kernel would choose to allocate memory from the free pool first, before flushing out buffers, cache or anything else. It all depends...

Hi,

Taking your questions in turn:

1. Buffers and cache are essentially types of memory that, whilst they are in use, could be freed up if the system required memory for some other purpose. ...

Hi,

Just a quick update, now that I have a bit of time.

-bash-3.2$ ls -l test*
-rw-r----- 1 e415243 other 4037689 Dec 19 14:35 test_file_01.txt
-bash-3.2$ wc -l test*
139186...

Method1 sets just selected permission bits:
g+x -> set the x bit for group.
ug+x -> set the x bits for user and group.
o-x -> clear the x bit for others.
Method2 sets all permission bits. The...

I don't think there's a reason to prefer one to the other; they are equivalent...

To defer the expansion of the variables:

bash-3.00$ su - oracle -c "x=1; echo $x"
Password:
Sun Microsystems Inc. SunOS 5.10 Generic January 2005

bash-3.00$ su - oracle -c "x=1; echo...

Try this:

su - oracle -c "
export ORACLE_SID=BRCFMS
export ORACLE_HOME=/u01/app/oracle/product/11.2.0.3/dbhome_1
export PATH=\$PATH:\$ORACLE_HOME/bin

sqlplus -s scott/tiger <<EOF
spool...

The problem I think is that some of your $ variables are being expanded before the su command is run, try escaping them like this, I don't really like $11 either, can I suggest ${1}1 for more...

sample_cmd:
printf "My location is: $0
My arguments are: $*
Database: $database"

Your script:
database=myDBname
echo EXEC:
sh /path/to/../sample_cmd $database
echo SOURCE
....

Yes.
You could try this:
su -c "echo $UID;whoami;echo $USER"

EDIT -- happens when one answers at the end of page one... --

Does the o_info script (as in Chubler's example) check for $1 ?
...

Uh, no. The shell parser on the receiving end of su -c has to know this is one command.

su - someuser -c 'ls; grep foo bar'
su - someuser -c "ls; grep foo bar"

Either of these will work.
...

-c is for command.. that means a string, so to pass more than 1 string you will use double quotes making what is within considered as a single...

You can do it like this:

su - oracle -c "source /home/oracle/BATGPRD1_oracle_env;sqlplus -s / as sysdba <<EOF ; ps -ef | grep pmon ; srvctl start database -d BATGPRD
spool...

EOF needs to be on it's own, try this:

EOF
ps -ef | grep pmon ; srvctl start database -d BATGPRD'

This is what Robin meant:
egrep -v "^PWRBRKER-3493|^PWRBRKER-7834|^SCHEDULER-ERROR" myapplication.log > tmp; mv tmp myapplication.log

Have you read the manual pages for egrep?

Have a look at the -v option and consider the special character ^ meaning the start of the record.


Does this help you out?



Robin...

You are right, that vi wrote a newline at the end of the file. That's what most editors do.

The cause is probably, that clusterware does not mind or care about the terminating newline.

You can...

It seems, your file /etc/oracle/config.loc does not end with a newline character.

Opening and saving the file with a text editor, like vi, should correct this issue.

The curly brace form is a bash sequence expression

From bash man page:
A sequence expression takes the form {x..y}, where x and y are either integers or single characters.

When integers are...