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You still haven't told us what operating system you're using.

Note that numeric is 0 through 9; not 1 through 9.

Note that awk and sed are perfectly capable of reading a file by itself without...

Note: -d '' will only work with GNU paste

Try also

$ sed ':a;N;$!ba;s/\n//g' file

---------- Post updated at 02:07 PM ---------- Previous update was at 02:04 PM ----------

paste -sd '' file

---------- Post updated at 02:08 PM...

This will leave the newline in place after the last line
paste -sd '\0' testcode.txt

Or try:

awk '{ORS=""}1' testcode.txt

Try:
tr -d '\n' < testcode.txt;echo

Try ls | sort -k1.7n

Since the OP was asking about exit status's in regards to child processes... I thought I would add this.


Consider two shell scripts, parent and child:

PARENT (test-parent.sh):

#!/bin/sh
...

#!/bin/ksh

actual=$(<filetest.log)
expected="PASS
PASS
PASS"

if [[ $actual == $expected ]]
then
print all fine
exit 0
else
print bad bad bad...
exit 1
fi

nawk '{if (gsub(/[^A-Z]/, "")){s++;exit}}END{exit s}' myFile;echo $?

try awk instead

nawk '{if (gsub(/[^A-Z]/, "")){s++;exit}}END{exit ++s}' myFile;echo $?