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Top Forums Shell Programming and Scripting retrieved multiple lines on multiple places in a file Post 302167383 by otheus on Thursday 14th of February 2008 10:20:54 AM
Old 02-14-2008
Quote:
Originally Posted by ghostdog74
Code:
while  read -r line
do
    case $line in
        first*|second*|third* ) echo "$line";;
    esac 
done < "file"

That looks like it should work, though like I said, the grep/awk solution would be more efficient. Maybe you should put double-quotes around the $line, as in:
Code:
case "$line" in

In ksh and bash, you can also parse out the first word from the rest:
Code:
case "${line%% *}" in
   first|second|third) echo "$line";;
esac

 

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echo(1) 						      General Commands Manual							   echo(1)

NAME
echo - echo (print) arguments SYNOPSIS
[arg] ... DESCRIPTION
writes its arguments separated by blanks and terminated by a new-line on the standard output. It also understands C-like escape conven- tions; beware of conflicts with the shell's use of write an alert character backspace print line without appending a new-line form-feed new-line carriage return tab vertical tab backslash the 8-bit character whose ASCII code is the 1-, 2-, 3- or 4-digit octal number n, whose first character must be a zero. write an 8-bit value that is the zero-, one-, two- or three-digit octal number num is useful for producing diagnostics in command files and for sending known data into a pipe. Notes Berkeley differs from this implementation. The former does not implement the backslash escapes. However, the semantics of the escape can be obtained by using the option. The echo command implemented as a built-in function of follows the Berkeley semantics (see csh(1)). EXTERNAL INFLUENCES
Environment Variables determines the interpretation of arg as single and/or multi-byte characters. If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari- able. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5). International Code Set Support Single- and multi-byte character code sets are supported. AUTHOR
was developed by OSF and HP. SEE ALSO
sh(1). BUGS
No characters are printed after the first This is not normally a problem. STANDARDS CONFORMANCE
echo(1)
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