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Full Discussion: How to generate the list?
Top Forums Shell Programming and Scripting How to generate the list? Post 302408449 by alister on Monday 29th of March 2010 02:03:25 PM
Old 03-29-2010
Tested with ksh93, pdksh (mostly ksh88), and bash.
Code:
#!/bin/sh

# b: brace expansion term
# e: eval-echo args
# l: a letter from "$@"

b=$1
e=$b
shift
for l; do
    b=$b,$l
    e="$e{$b}"
done

eval echo "$e"

A sample run:
Code:
$ ./rdcwayx.sh e x p e c t | wc -w
     720

$ ./rdcwayx.sh e x p e c t | fmt
eeeeee eeeeex eeeeep eeeeee eeeeec eeeeet eeeexe eeeexx eeeexp
eeeexe eeeexc eeeext eeeepe eeeepx eeeepp eeeepe eeeepc eeeept
eeeeee eeeeex eeeeep eeeeee eeeeec eeeeet eeeece eeeecx eeeecp
eeeece eeeecc eeeect eeexee eeexex eeexep eeexee eeexec eeexet
eeexxe eeexxx eeexxp eeexxe eeexxc eeexxt eeexpe eeexpx eeexpp
eeexpe eeexpc eeexpt eeexee eeexex eeexep eeexee eeexec eeexet
eeexce eeexcx eeexcp eeexce eeexcc eeexct eeepee eeepex eeepep
eeepee eeepec eeepet eeepxe eeepxx eeepxp eeepxe eeepxc eeepxt
eeeppe eeeppx eeeppp eeeppe eeeppc eeeppt eeepee eeepex eeepep
eeepee eeepec eeepet eeepce eeepcx eeepcp eeepce eeepcc eeepct
eeeeee eeeeex eeeeep eeeeee eeeeec eeeeet eeeexe eeeexx eeeexp
eeeexe eeeexc eeeext eeeepe eeeepx eeeepp eeeepe eeeepc eeeept
eeeeee eeeeex eeeeep eeeeee eeeeec eeeeet eeeece eeeecx eeeecp
eeeece eeeecc eeeect eexeee eexeex eexeep eexeee eexeec eexeet
eexexe eexexx eexexp eexexe eexexc eexext eexepe eexepx eexepp
eexepe eexepc eexept eexeee eexeex eexeep eexeee eexeec eexeet
eexece eexecx eexecp eexece eexecc eexect eexxee eexxex eexxep
eexxee eexxec eexxet eexxxe eexxxx eexxxp eexxxe eexxxc eexxxt
eexxpe eexxpx eexxpp eexxpe eexxpc eexxpt eexxee eexxex eexxep
eexxee eexxec eexxet eexxce eexxcx eexxcp eexxce eexxcc eexxct
eexpee eexpex eexpep eexpee eexpec eexpet eexpxe eexpxx eexpxp
eexpxe eexpxc eexpxt eexppe eexppx eexppp eexppe eexppc eexppt
eexpee eexpex eexpep eexpee eexpec eexpet eexpce eexpcx eexpcp
eexpce eexpcc eexpct eexeee eexeex eexeep eexeee eexeec eexeet
eexexe eexexx eexexp eexexe eexexc eexext eexepe eexepx eexepp
eexepe eexepc eexept eexeee eexeex eexeep eexeee eexeec eexeet
eexece eexecx eexecp eexece eexecc eexect eepeee eepeex eepeep
eepeee eepeec eepeet eepexe eepexx eepexp eepexe eepexc eepext
eepepe eepepx eepepp eepepe eepepc eepept eepeee eepeex eepeep
eepeee eepeec eepeet eepece eepecx eepecp eepece eepecc eepect
eepxee eepxex eepxep eepxee eepxec eepxet eepxxe eepxxx eepxxp
eepxxe eepxxc eepxxt eepxpe eepxpx eepxpp eepxpe eepxpc eepxpt
eepxee eepxex eepxep eepxee eepxec eepxet eepxce eepxcx eepxcp
eepxce eepxcc eepxct eeppee eeppex eeppep eeppee eeppec eeppet
eeppxe eeppxx eeppxp eeppxe eeppxc eeppxt eepppe eepppx eepppp
eepppe eepppc eepppt eeppee eeppex eeppep eeppee eeppec eeppet
eeppce eeppcx eeppcp eeppce eeppcc eeppct eepeee eepeex eepeep
eepeee eepeec eepeet eepexe eepexx eepexp eepexe eepexc eepext
eepepe eepepx eepepp eepepe eepepc eepept eepeee eepeex eepeep
eepeee eepeec eepeet eepece eepecx eepecp eepece eepecc eepect
exeeee exeeex exeeep exeeee exeeec exeeet exeexe exeexx exeexp
exeexe exeexc exeext exeepe exeepx exeepp exeepe exeepc exeept
exeeee exeeex exeeep exeeee exeeec exeeet exeece exeecx exeecp
exeece exeecc exeect exexee exexex exexep exexee exexec exexet
exexxe exexxx exexxp exexxe exexxc exexxt exexpe exexpx exexpp
exexpe exexpc exexpt exexee exexex exexep exexee exexec exexet
exexce exexcx exexcp exexce exexcc exexct exepee exepex exepep
exepee exepec exepet exepxe exepxx exepxp exepxe exepxc exepxt
exeppe exeppx exeppp exeppe exeppc exeppt exepee exepex exepep
exepee exepec exepet exepce exepcx exepcp exepce exepcc exepct
exeeee exeeex exeeep exeeee exeeec exeeet exeexe exeexx exeexp
exeexe exeexc exeext exeepe exeepx exeepp exeepe exeepc exeept
exeeee exeeex exeeep exeeee exeeec exeeet exeece exeecx exeecp
exeece exeecc exeect exxeee exxeex exxeep exxeee exxeec exxeet
exxexe exxexx exxexp exxexe exxexc exxext exxepe exxepx exxepp
exxepe exxepc exxept exxeee exxeex exxeep exxeee exxeec exxeet
exxece exxecx exxecp exxece exxecc exxect exxxee exxxex exxxep
exxxee exxxec exxxet exxxxe exxxxx exxxxp exxxxe exxxxc exxxxt
exxxpe exxxpx exxxpp exxxpe exxxpc exxxpt exxxee exxxex exxxep
exxxee exxxec exxxet exxxce exxxcx exxxcp exxxce exxxcc exxxct
exxpee exxpex exxpep exxpee exxpec exxpet exxpxe exxpxx exxpxp
exxpxe exxpxc exxpxt exxppe exxppx exxppp exxppe exxppc exxppt
exxpee exxpex exxpep exxpee exxpec exxpet exxpce exxpcx exxpcp
exxpce exxpcc exxpct exxeee exxeex exxeep exxeee exxeec exxeet
exxexe exxexx exxexp exxexe exxexc exxext exxepe exxepx exxepp
exxepe exxepc exxept exxeee exxeex exxeep exxeee exxeec exxeet
exxece exxecx exxecp exxece exxecc exxect expeee expeex expeep
expeee expeec expeet expexe expexx expexp expexe expexc expext
expepe expepx expepp expepe expepc expept expeee expeex expeep
expeee expeec expeet expece expecx expecp expece expecc expect
expxee expxex expxep expxee expxec expxet expxxe expxxx expxxp
expxxe expxxc expxxt expxpe expxpx expxpp expxpe expxpc expxpt
expxee expxex expxep expxee expxec expxet expxce expxcx expxcp
expxce expxcc expxct exppee exppex exppep exppee exppec exppet
exppxe exppxx exppxp exppxe exppxc exppxt expppe expppx expppp
expppe expppc expppt exppee exppex exppep exppee exppec exppet
exppce exppcx exppcp exppce exppcc exppct expeee expeex expeep
expeee expeec expeet expexe expexx expexp expexe expexc expext
expepe expepx expepp expepe expepc expept expeee expeex expeep
expeee expeec expeet expece expecx expecp expece expecc expect

Regards,
Alister
 

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