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Top Forums Shell Programming and Scripting Seperated a Column from 'ESC' Character seperated file Post 303020418 by rovf on Thursday 19th of July 2018 05:20:36 AM
Old 07-19-2018
Quote:
Originally Posted by neha_suri06
Hi Experts

I have an escape seperated fields in the unix file. And in the below format file I need to extract the first column.
Columns separated by Escape characters! And I thought I have already seen all the weirdnesses of the world!

Extracting one column can be done by the cut command. See man cut. You can specify the column separator with this command.

There are other possibilities too (grep for instance).

How to represent an escape character, depends on the shell you are using. For instance, escape can be represented in bash or zsh by
Code:
$'\e'

 

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CUT(1)							      General Commands Manual							    CUT(1)

NAME
cut - select out columns of a file SYNOPSIS
cut [ -b | -c] list [file...] cut -f list [-d delim] [ -s] OPTIONS
-b Cut specified bytes -c Select out specific characters -d Change the column delimiter to delim -f Select out specific fields that are separated by the -i Runs of delimiters count as one -s Suppres lines with no delimiter characters, when used EXAMPLES
cut -f 2 file # Extract field 2 cut -c 1-2,5 file # Extract character columns 1, 2, and 5 cut -c 1-5,7- file # Extract all columns except 6 DESCRIPTION
[file...]" delimiter character ( see delim)" with the -f option. Lines with no delimiters are passwd through untouched" Cut extracts one or more fields or columns from a file and writes them on standard output. If the -f flag is used, the fields are sepa- rated by a delimiter character, normally a tab, but can be changed using the -d flag. If the -c flag is used, specific columns can be specified. The list can be comma or BLANK separated. The -f and -c flags are mutually exclusive. Note: The POSIX1003.2 standard requires the option -b to cut out specific bytes in a file. It is intended for systems with multi byte characters (e.g. kanji), since MINIX uses only one byte characters, this option is equivalent to -c. For the same reason, the option -n has no effect and is not listed in this man- ual page. SEE ALSO
sed(1), awk(9). CUT(1)
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