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Full Discussion: Help building a variable string from a keyword - character replacements!
Top Forums Shell Programming and Scripting Help building a variable string from a keyword - character replacements! Post 303031126 by MadeInGermany on Thursday 21st of February 2019 06:29:24 PM
Old 02-21-2019
Here is one with bash:
Code:
#!/bin/bash
word=$1
len=${#1}
KEYWORD=$(
for ((i=1; i<=len; i++))
do
  for ((j=i+1; j<=len; j++))
  do
    # the following uses sed
    # echo "$word" | sed "s/./_/$i; s/./_/$j"
    # the following uses variable modifiers
    wrd=${word:0:i-1}_${word:i}
    echo "${wrd:0:j-1}_${wrd:j}"
  done
done
)
echo "$KEYWORD"
echo "in one row:"
(
  set -f
  echo $KEYWORD
)

This User Gave Thanks to MadeInGermany For This Post:
nezabudka
 

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LEARN ABOUT FREEBSD

apropos

APROPOS(1)						    BSD General Commands Manual 						APROPOS(1)

NAME

     apropos, whatis -- keyword search whatis documentation databases

SYNOPSIS

     apropos [-d] keyword ...
     whatis [-d] keyword ...

DESCRIPTION

     The apropos utility searches a set of databases looking for documentation matching each keyword and displays the results.	The whatis utility
     does the same search but only on complete words.

     -d  Print extra debugging information.

     The keyword is simply passed to grep(1) allowing for extended regular expression matches.

ENVIRONMENT

     The following environment variables affect the execution of apropos:

     MANLOCALES, MANPATH, PATH
	    Used to find the location of the whatis database files. See manpath(1) for additional information.

     PAGER  Program used to display files.  If unset, more -s is used.

DIAGNOSTICS

     The apropos utility exits 0 if a keyword matched and 1 if no keywords are matched or no whatis databases are found.

SEE ALSO

     grep(1), makewhatis(1), man(1), manpath(1), man.conf(5)

BSD
								 September 1, 2010							       BSD
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