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Your tail | tail pipeline will never end. The 2nd tail reads one line from the end of the pipeline; but, since the tail -f will never terminate, the pipeline won't deliver an EOF to the 2nd tail...

Try:
awk '{for(i=1; i<=NF; i++) sub(/^[ \t]+|[ \t]+$/,x,$i)}1' FS=\| OFS=\| file

Look at using the following:

import shlex
import subprocess
conn_fl = ptfm_dgnst['conn_fl']
subprocess.call(shlex.split(conn_fl))

Not checked. You will need to read up on shlex and...

You might find it easier to write a bash script that does what you want it to do,
scp it to each of the servers, then run that script remotely with the '-C' parameter.
Here is some sample code.
...

Hi, the while-read loop is taking stdin away from the ssh command. Try:
while read line <&3
do
....
done 3<${HOME}/hosts.txt

df has - per the POSIX-definition (http://pubs.opengroup.org/onlinepubs/007904875/utilities/df.html) - the option "-P" for exactly this: formatting the output in a consistent way across all...

From what i've found, it seems to valid for mountpoints with spaces in any of the directory structure segments.

With this code, only the first part of a path with a space will be read, and will be...

The NetApp .snapshot is not visible in all cases.
Try
[ -d "${line}"/.snapshot/. ]
or use the exit status of cd
if cd "${line}"/.snapshot
then
echo "backup"
else
echo "does not exist"...

Remove the red marked exclamation mark:
if [ "${fdate}" != "${bkp_fldr_timestamp}" ]
As it claims that there is no snapshot, eventhough both dates are found (date + folder), the negation of the...

you don't need 'active function' for sqlplus - remove the` from `sqlplus -s $SQL_LOGON and from EOF`

Why not?
You have 4 logical servers, each having their own IP etc...

sed -n '/^Thread \[/ { s///; s/_.*//; N; N; N; p; }'
Regards,
Alister

Move the P (print if P is not 0) before the /Busy/ {exit}

$ sed -n "/^Thread/,/Busy Percentage/ { s/^Thread .//; s/_.*//; p}" input
TRANSF
Total Run Time = [338.043617] secs
Total Idle Time = [0.000000] secs
Busy Percentage =...

This is close to what you tried in post #1, and should work
awk '/TRANSF_/{f=1} f {print; if ($0~/Busy/) exit}' sess.log
Thread [TRANSF_1_1_1] created for [the transformation stage] of partition...

Explanation:
awk -F'[][]' ' # Set [ ] as field separators
/^Thread/ { # Search if record begins with pattern: Thread
...

This is wrong:
EOF
It needs to be:
EOF You cannot indent the ending-tag of a here-document. (The special kind which can needs to be indented with tabs, and is confusing to use, so I don't...

The if statement right above the else does not end with a "fi".

awk '{a=a FS substr($0,1,10);b=b FS substr($0,12,3);c=c FS substr($0,16,5);d=d FS substr($0,22,8);e=e FS substr($0,31)}
END{gsub(/ *$/,"",a);gsub(/ /,"",b);gsub(/ /,"",c);gsub(/ /,"",d);print...

tail -1will return the last entry (if that is always the correct one for you), otherwise you could pipe through grep first in order to discard unwanted entries prior to printing the last valid entry,...

ls -lart *.dat|grep -v resend | tail -1


returns the listing in ascending time modified order of only files ending in .dat, removes anything containing resend in the line, and shows only the last...

The supplied code only works with GNU awk for plain awk you might need something like this:
awk '!$0;$0{printf $0" "}END{print}' infile

Another version with extra space on end of each line...

Back in #1 there were blank lines so 4 was a good number.

It only works when there are empty lines between the records, as is the case in the sample input file.

A bit fork/exec intensive, but yes, that is another way to collect N lines into one:xargs -n4 echo < file