04-15-2009
cat vs head vs readline get variable from txt file
I have a file with a single filename in it, which I want to assign to a BASH variable, so I've been trying:
c=$(head -1 somefile)
echo $c
which outputs correctly, but them when I do
...
somecommand $c
it says it can't find the file, is that because it's grabbing the whole line, and how should I be doing it different, grep maybe?
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FGETC(3) 1 FGETC(3)
fgetc - Gets character from file pointer
SYNOPSIS
string fgetc (resource $handle)
DESCRIPTION
Gets a character from the given file pointer.
PARAMETERS
o $handle
-The file pointer must be valid, and must point to a file successfully opened by fopen(3) or fsockopen(3) (and not yet closed by
fclose(3)).
RETURN VALUES
Returns a string containing a single character read from the file pointed to by $handle. Returns FALSE on EOF.
Warning
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
Booleans for more information. Use the === operator for testing the return value of this function.
EXAMPLES
Example #1
A fgetc(3) example
<?php
$fp = fopen('somefile.txt', 'r');
if (!$fp) {
echo 'Could not open file somefile.txt';
}
while (false !== ($char = fgetc($fp))) {
echo "$char
";
}
?>
NOTES
Note
This function is binary-safe.
SEE ALSO
fread(3), fopen(3), popen(3), fsockopen(3), fgets(3).
PHP Documentation Group FGETC(3)