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Full Discussion: Need to find and replace in a file
Top Forums UNIX for Beginners Questions & Answers Need to find and replace in a file Post 302997755 by abhi_123 on Friday 19th of May 2017 03:24:07 AM
Old 05-19-2017
Need to find and replace in a file
Hi All,

I am having below sample data in a file.
I need to find all the line form this file with word ABC and i need to replace the characters at position 120 which is "CO:BOGFDUI"(30chars) in the lines with blank space.
I have tried using grep to find the word with ABC (grep ABC filename), but i am unable to substite the word at this position.
Could you please help me in this.

file data:
Code:
20840GFC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BASAGIO
20840GFC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BRGRUUR
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BTGFGFG
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BGGFEWE
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BIGFGFG
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BOGFDUI
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BPGFDSY
20840XYZ00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BUGFGFG
20840XYZ00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BTGFFSF

output file data:
Code:
20840GFC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BASAGIO
20840GFC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BRGRUUR
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737
20840ABC00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737
20840XYZ00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BUGFGFG
20840XYZ00524096100000LAU1LDNUSD CR       6.322017041120170411              00016574200165737CO:BTGFFSF

 

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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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