120 lines
2.4 KiB
Text
120 lines
2.4 KiB
Text
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
HOME=/homes/chet
|
|
string=abcdefg
|
|
set -- a b c
|
|
|
|
shopt -u patsub_replacement
|
|
|
|
# verify existing behavior
|
|
echo ${string/abc/~}
|
|
echo "${string/abc/~}"
|
|
echo ${string/abc/"~"}
|
|
|
|
echo ${string/abc/$notthere}
|
|
echo "${string/abc/$notthere}"
|
|
echo "${string/abc/"$notthere"}"
|
|
|
|
echo ${string//?/\$\'&\' }
|
|
|
|
shopt -s patsub_replacement
|
|
|
|
echo ${string//?/\$\'&\' }
|
|
|
|
echo ${string//?/& }
|
|
echo "${string//?/& }"
|
|
|
|
echo ${string//?/\& }
|
|
echo "${string//?/\& }"
|
|
echo ${string//?/"& "}
|
|
echo ${string//?/"\& "}
|
|
|
|
echo "${string//?/"a "}"
|
|
echo "${string//?/"$# "}"
|
|
|
|
echo ${string/abc/& }
|
|
echo "${string/abc/& }"
|
|
echo ${string/abc/"& "}
|
|
|
|
echo ${string/abc/\& }
|
|
echo "${string/abc/\& }"
|
|
echo ${string/abc/"\& "}
|
|
echo ${string/abc/\\& }
|
|
|
|
rep='\\&'
|
|
|
|
echo "${string/abc/&}"
|
|
echo ${string/abc/\&}
|
|
echo "${string/abc/\\&}"
|
|
echo ${string/abc/"\\&"}
|
|
echo "${string/abc/"\\&"}"
|
|
echo ${string/abc/$rep}
|
|
echo ${string/abc/"$rep"}
|
|
|
|
shopt -u patsub_replacement
|
|
|
|
echo "${string/abc/&}"
|
|
echo ${string/abc/\&}
|
|
echo "${string/abc/\\&}"
|
|
echo "${string/abc/"\\&"}"
|
|
echo ${string/abc/"$rep"}
|
|
|
|
shopt -s patsub_replacement
|
|
|
|
repl='x&y'
|
|
r2='x\&y'
|
|
var='letssee'
|
|
|
|
pat=ss
|
|
|
|
echo ${var//$pat/"$repl"}
|
|
echo "${var//$pat/"$repl"}"
|
|
echo ${var//$pat/$repl}
|
|
echo "${var//$pat/$repl}"
|
|
|
|
echo ${var//$pat/"$r2"}
|
|
echo "${var//$pat/"$r2"}"
|
|
echo ${var//$pat/$r2}
|
|
echo "${var//$pat/$r2}"
|
|
|
|
r2='\\&'
|
|
r3='\&'
|
|
|
|
echo ${var//$pat/\\\&}
|
|
echo ${var//$pat/\\$r2}
|
|
echo ${var//$pat/\\&}
|
|
echo ${var//$pat/$r2}
|
|
|
|
echo ${var//$pat/"\&"}
|
|
echo ${var//$pat/"$r3"}
|
|
echo ${var//$pat/"&"}
|
|
echo ${var//$pat/$r3}
|
|
|
|
# these cases provide the same functionality as sed when given a BRE like
|
|
# `^' or `$', or when passed a null input line
|
|
one=one
|
|
null=
|
|
|
|
echo ${one/#/&two}
|
|
echo ${one/#/\&two}
|
|
|
|
echo ${one/%/&two}
|
|
echo ${one/%/\&two}
|
|
|
|
echo ${null/#/&two}
|
|
echo ${null/#/\&two}
|
|
|
|
echo ${one/#?/&two}
|
|
echo ${one/#?/\&two}
|