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-prune does not only suppress output, it really skips(prunes) these directories.
-o is logical OR, in a sequence has the meaning of "otherwise"
-a is logical AND, and can be omitted (is implicit),...

clx and mjf,
Note that $1 in a and the discussion in the referenced thread provide a test for exact matches, but $1 ~ /COMS|SMAS|MARC/ is testing for substring matches. In other words, if the first...

Actually you don't need to store the long $0 in memory,
map[$1]=1 is enough.
Most awk can store even nothing, and can lookup elements without defining them if not found
awk 'FNR==NR{map[$1];next}...

It is because the ++ in count[subscript]++ is a post-increment operation. That expression returns the value it had before the value is incremented and then increments the variable to the new value. ...

Hi mjf,
$2 is not being set to $1.
If $1 is present as an index in E[] ($1 in E), $2 is being set to E[$1]; otherwise $2 is being set to the string No Match.

Both are working, but you should use Dons suggestion in favour of mjfs: there is a mechanism called "process substitution" in bourne-like shells (Bourne-Shell, bash and ksh, to name the most popular...

You could also try:
nohup sh -c 'date;cp -rp /files/source /files/target;date' 2>&1 > cplog &

Suppose that you have two records in a file with '|' as the field separator:
ab|c
a|bc
and you want to count the number of occurrences of different settings in the 1st two fields.
awk -F '|' '
{...

Another approach:
find . -name "test*.txt.Z" -exec zcat -v {} \; 1>&1 2>&1 | awk ' {
sub(/[ \t]+[0-9]+\.[0-9]%/,x,$0)
r = match($0, /\..*:/)
if(r) {
f =...

Try:

find . -name "test*.txt.Z" -print | awk '{F=$0; while(("zcat "F| getline) > 0) print F, $0; close("zcat "F)}'or

find . -name "test*.txt.Z" -print | while read FILE
do
zcat "$FILE" |...

wc counts the number of newlines. If one of the files doesn't end in a newline, that would explain the discrepancy, since awk would add the missing newline when it prints that record.

Regards,...

You'll need to either print the fields one by one or force the reconstruction of the record:

zsh-5.0.0[]% echo a b c d | awk 'BEGIN { OFS = ";" }{ print $1, $2, $3, $4 }'
a;b;c;d
zsh-5.0.0[]%...