how to delete spaces around a word

sachin.gangadha · #1 12-04-2007

suppose a line has one word
ex:
unix

how to delete space around that word?

denn · #2 12-04-2007

in vi:

Code:

%s= ==g

jim mcnamara · #3 12-04-2007

One way:

Code:

 echo '     unix   ' | sed 's/^[ ]*//g;s/[ ]*$//g'

sachin.gangadha · #4 12-04-2007

In oracle we have a function called trim. is there a similiar function in unix?

gus2000 · #5 12-04-2007

There are many ways to "skin that cat":

Code:

echo '    unix    ' | awk '{print$1}'
echo '    unix    ' | read NEWVALUE
NEWVALUE=$(echo '    unix    ')

vgersh99 · #6 12-04-2007

Quote:

Originally Posted by sachin.gangadha

In oracle we have a function called trim. is there a similiar function in unix?

NOW there is:

Code:

#!/bin/ksh

str='  1 2   3  5  '

function trim {
   
   echo "${1}" | /usr/xpg4/bin/awk '{gsub("^[[:space:]]+|[[:space:]]+$", "", $0); printf("%s\n", $0)}'
}

echo "[${str}] -> [$(trim "${str}")]"

prowla · #7 12-04-2007

Code:

cat file | while read s
do
     echo $s
done

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