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Concatenate strings in a a for loop

 
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# 8  
Old 09-12-2014
Quote:
Originally Posted by bakunin
You do not even need to use escapes if you enclose your variables in double quotes:
Code:
file="foo*bar"
[..]

You do not even need to use double quotes, since wildcards are not expanded in variable assignments:
Code:
file=foo*bar


----
Quote:
Originally Posted by rbatte1
[..]
To test if a file exists, convert from:-
Code:
FILESEXIST=`ls -1 $TEST 2>/dev/null | wc -l`

if [[ $FILESEXIST -eq 0 ]]
then ........

.... to just:-
Code:
if [ -f $TEST ]
then ........

Quote:
Originally Posted by bakunin
[..]
Code:
file="foo*bar"

if [ -f $file ] ; then                    # <-- notice the difference
     echo "file ${file} exists"
else
     echo "file ${file} does not exist"
fi

This test will fail if there is more than one file according to that pattern,

For a pure shell solution, one could use something like this:
Code:
file_exists() {
  for _i do
    [ -f "$_i" ] && break
  done
}

if file_exists $file; then

Last edited by Scrutinizer; 09-12-2014 at 03:21 PM..
 
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