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Top Forums Shell Programming and Scripting Reading a single character from each line of the file Post 302479597 by methyl on Saturday 11th of December 2010 06:46:51 PM
Old 12-11-2010
Quote:
while read line ; do
k=`echo $line|cut -c 26`
if [ $k = "X" ] ; then
echo "Character at the row was X"
fi
done < $input_file

Try quotes round string variables.
Code:
while read line ; do
        k=`echo "${line}"|cut -c 26`
        if [ "${k}" = "X" ] ; then
                echo "Character at the row was X"
        fi
done < $input_file

 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - Reads one line from standard input SYNOPSIS
line STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: line: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
None DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command within a shell command file to read from your terminal. The line command always writes at least a newline character. NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead. EXIT STATUS
Success. End-of-File. EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log This shell procedure displays the message: Enter comments for the log: It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon) prompt. See the echo command for information about the c escape sequence. SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p) Functions: read(2) Standards: standards(5) line(1)
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