11-29-2001
In DOS ,the end of the line is indiacted by two characters to have compatability with type writer i.e enter ( new line feed) and carrige return (to bring the typewriter head to start position) but in unix only end of line is there with no carrige return so character
' ^ M ' gets appended at the end of line.
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TRIM(3) 1 TRIM(3)
trim - Strip whitespace (or other characters) from the beginning and end of a string
SYNOPSIS
string trim (string $str, [string $character_mask = " 0r B"])
DESCRIPTION
This function returns a string with whitespace stripped from the beginning and end of $str. Without the second parameter, trim(3) will
strip these characters:
o " " (ASCII
32 ( 0x20)), an ordinary space.
o " " (ASCII
9 ( 0x09)), a tab.
o "
" (ASCII
10 ( 0x0A)), a new line (line feed).
o "
" (ASCII
13 ( 0x0D)), a carriage return.
o "