Answer / siddalingesha

set i "ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbbbccbb"
set n [regexp {.*(information).*} $i ma s]
puts "$s"

Answer / mak310

puts [string trim "ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbbbccbb" "abc"]

verified result.
works 100% fine.

Answer / surya

regexp {.*
(information).*} "ccccccccaaabbbbaaaabbinformationabcaaaaaab
bbbbbbccbb" all required

Now the value 'information' is stored in the
variable "required"

Answer / alex

regexp information
"aaaaaaaaaaaaaaaaaaainformationhhhhhhjgfjf" arg1
puts $arg1

Answer / raja

regexp "information"
"ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbbbccbb" var1
puts $var1

Answer / pranab

% set
a "ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbbbccbb"
ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbbbccbb
% set b [string trimleft $a "abc"]
informationabcaaaaaabbbbbbbccbb
% set c [string trimright $b "abc"]
information


OR..
% set output [string trimright [string trimleft
$a "abc"] "abc"]
information
%

Answer / kango

puts [string trim $a cabab]

Answer / sujoy

puts [regexp -all -inline
information "ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbb
bccbb"]

Answer / amar

set a "ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbbbccbb"
set b [string range $a 21 31]
puts $b

Answer / ch.venkatesh

set i "ccccccccaaabbbbaaaabbinformationabcaaaaaabbbbbbbccbb"
set n [regexp {([A-Za-z]*)} "information" a]
puts "$a"

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