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Top Forums Shell Programming and Scripting Bash - Inserting non printable character(s) in string variable Post 302962769 by jcdole on Friday 18th of December 2015 06:19:34 AM
Old 12-18-2015
My filter is :
Code:
L_TEMP_TEST=$(echo "$L_TEMP"  | grep -E "[[:print:]]")

My filter is malformed.
I want to exclude any value which does not contains exclusively printable character.
Code:
L_TEMP=$a$'\x07'$b
L_TEMP_TEST=$(echo "$L_TEMP"  | grep -E "[[:print:]]")

L_TEMP_TEST should be null
What is the good filter ?
Any help is welcome
 

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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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