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Full Discussion: Shell - Read a text file with two words and extract data
Top Forums UNIX for Beginners Questions & Answers Shell - Read a text file with two words and extract data Post 302983627 by dandaryll on Friday 14th of October 2016 04:15:40 AM
Old 10-14-2016
May I ask what read -a do and F means too?

Also I why did you use printf instead of echo now? I don't know much about printf may I ask if its like grep or awk?

Then, what does %s mean I know \n is newline

Then, what does ${F[@]# } mean?

Code:
while IFS=, read -a F
do
  printf "%s\n" "${F[@]# }"
done < newtest2.txt > output.txt

Thanks much for prompt reply!
Last edited by rbatte1; 10-14-2016 at 08:04 AM.. Reason: Changed CODE tags to ICODE and corrected spelling
 

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LEARN ABOUT LINUX

zegrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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