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One approach is to use a for loop to open one file at a time, modify and redirect the output to a temporary file, rename the temporary file back to original file:-
for file in *.txt; do awk -F,...

You can simply pass the variable value as a command line argument:-
python.py "${db}"
In you python program, you can use the sys.argv to accept and use argument:-

import sys

if len(sys.argv)...

Here is an approach using nawk by checking each character:-
nawk '
{
for ( i = 1; i <= length; i++ )
{
c = substr($0,i,1)

...

I noticed several syntax errors in your script.


If and elif conditional expressions missing blank spaces
Use -eq instead for numerical comparison
One can increment variable within (( ))...

Here is one approach using awk:-
awk -F= '
/section/ {
sc = $1
S[sc]
next
}
/^VALUE/ {
A[sc FS $1] = $0...

Your data appears to have variable number of columns. The code you wrote will work if all rows in your input file has exactly three columns.

But if that is how your input data is, then one...

Using awk:-
awk '
NF {
SN = $0
sub(/\.[^.]*$/,X,SN)
++A[SN]
}
END {
for ( k in A )
...

I suppose then your input is not tab delimited, try:-
awk '
NR == FNR {
A[$1] = $0
next
}
$1 in A {
split(A[$1], T)
...

Set xtrace and verbose ON and run the script to understand at which stage it is waiting.

#!/bin/ksh -xv

Try:-

awk -F'\t' '
NR == FNR {
A[$1] = $0
next
}
$1 in A {
split(A[$1], T)
if ( T[2] >= $4 && T[3] <=...

Another approach using awk:-
awk '{t+=gsub(/\|/,"&")}t!=3{ORS=FS}t==3{ORS=RS;t=0}1' file

To see the output from program, you have to print the output. I believe stdout is used internally for this function:-

print subprocess.check_output(shlex.split(command))

You have to use a LOOP to fetch and print all of them:-

BEGIN
OPEN C1;
LOOP
FETCH C1 into KS_UID;
EXIT WHEN C1%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(KS_UID);
END LOOP;
CLOSE C1;
END;
/

It is also possible that the command that you are running is sending the output to stderr instead of stdout

Try this instead:-

subprocess.check_output(shlex.split(command),...

Using built-in parameter substitution (https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/osmanagement/korn_shell_parmsub1.html):-

while read line
do
SOME_VAR="${line%%=*}"
...

Variable name is case sensitive:-
awk '
BEGIN {
print "<table>"
}
{
print "<tr>"
for ( i = 1; i <= NF; i++ )
...

This discussion forum was really instrumental in helping me broaden my understanding about *nix systems.

I like to thank every Advisors and Moderators for their great efforts. Keep up the good...

Here are the different process state codes and description:-

D Uninterruptible sleep (usually IO)
R Running or runnable (on run queue)
S Interruptible sleep (waiting for an event to...

Using shell built-ins:-
while read line
do
for file in ${line//:/ }
do
print $file
done
done < data.txt

OR
tr ':' '\n' < data.txt

If you have python installed, here is an approach:-
import datetime

def previous_weekday(day, weekday):
days_behind = weekday - day.weekday()
if days_behind >= 0:
...

Try:-
sed 's#\([|]\)\([ ]*\)\([|]\)#\10\2#;s#\([ ]*\)\([^ ]*\)\([ ]*\)#\2#g' file

Please use code tags for code fragments.

Your code is pretty much straightforward:-
# BEGIN Block
BEGIN {
i = 1 # Initialize i = 1
file =...

Note that = is an assignment operator. It assigns the value of right side expression to left side.

But == is an equal to operator. It compares the value of both sides. Hence you have to use == in...

You should ensure the here document is closed for both your SQL blocks:-
sqlplus -s /nolog << EOF
connect $conn_str;
whenever sqlerror exit sql.sqlcode;
set newpage 0;
SET PAGESIZE 0;
SET ECHO...

File name is case sensitive:-
spool v_out.txt
spool V_OUT.txt append
will create two different files.