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awk '{ for(i=0;i<=NF;i++) { if($i !~ /\/mnt\/svn/) s=s ? s OFS $i : $i } print s; s="" }' file

Use -z for that. -z tests if a string is blank.

if [ ! -z "$2" ]
then
echo "value $2"
else
echo "2 is blank"
fi

And don't leave out the quotes. [ ! -z ] is a syntax...

Such badness can be done.
DATE=`date`
# global variable stores a state of a function
gdone=0

func() {
echo asdf
if [ $gdone -eq 0 ]
then
gdone=1
mkdir mydir_${DATE}
fi
}
...

I haven't seen that getopt actually makes shell code any simpler...

while [ "$#" -gt 0 ]
do
case "$1" in
-a) AVAR=ACTIVE
ASTR=$2
shift
...

Actually, this already accounts for it. See the shift statements. They remove the first argument and move everything down. That's why I can just check $1 every loop.

i.e. if $1=a, $2=b, $3=c,...

It takes advantage of the greedy matching characteristic of sed, which means that it will try to find the longest match possible.. So in this case the longest match to .*/ is /home/guru/temp/, so it...

This is the one of the most frequently asked questions :)

awk '!_[$0]++' infile

nawk -f glev.awk qq='"' myFile
glev.awk:

{
if (match($0, qq "[^" qq "]+" qq)) {
s=substr($0,RSTART,RLENGTH)
gsub("[:/]", "",s)
$0=substr($1,1,RSTART-1) s...

echo 'foo:"9781238274584-Ace of Spades/ The Poop" "Ace of Spades: The Poop" ...' | sed 's#"\([^"]*\)[:/]\([^"]*\)"#"\1\2"#1'

echo '"9781238274584-Ace of Spades: The Poop" "Ace of Spades: The Poop" ...' | sed 's#[:/]##1'

Try this:

awk -F'"' '{gsub("[:/]","",$2); print $0; }' myFile

No, it expand before the file is removed
rm abc ab*expand to
rm abc abc abd abe abf abg abhso the abc file appears twice
when trying to remove the second one, the file is not found because it...

The _ is an array name. You can change it to whatever valid identifier name you like - !my_awk_array[$0]++ would be the same.

! is a logical negation: NOT my_awk_array[$1]++

The expression...

Or using find properly: The "!" means "not".

# Just the names
find . -type f ! -name '*.jar' -print
# With directory listing
find . -type f ! -name '*.jar' -exec ls -lad {} \;

try:
find ./ -exec ls {} \; |grep -v .jpg

awk -F, '
NR==FNR{a[$1]=$2;next}
{for (i in a) {if ($0~i) $2=$2 " " a[i]}}1
' FileA FS="\"" OFS="\"" FileB

nawk -F'"' '{gsub(" ","",$1);print "cd /data/audiobooks/" $1; print "~/Desktop/mp3-to-m4b" OFS $1 "-" $2 OFS FS $2 FS OFS FS $4 FS OFS $5 OFS "n"}' myFile

echo "TheWhisperers23Chapter 21 9781442305151 \"WHISPERERS\" \"CONNOLLY, JOHN\" 2010" |sed 's/\(.*"\)\(.*\), \(.*\)\(".*\)/\1\L\3 "\u\3 \L\2 \u\2\4/' |awk '{$5=$7="";print $0}'...

A Perl :

# cat file
TheWhisperers23Chapter 22 9781442305151 "WHISPERERS" "CONNOLLY, JOHN" 2010
TheWhisperers23Chapter 22 9781442305151 "WHISPERERS" "TORRES, FERNANDO" 2010

#...

time line-of-code
See man time