85 lines
2.3 KiB
Plaintext
Executable File
85 lines
2.3 KiB
Plaintext
Executable File
# first try some invalid patterns
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# do all of these in subshells since it's supposed to error out
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# (set argv0 to "SHELL" to avoid "/path/to/shell: blah" in error messages)
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export var=0123456789
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"$THIS_SH" -c 'echo ${:}' SHELL
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"$THIS_SH" -c 'echo ${::}' SHELL
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"$THIS_SH" -c 'echo ${:1}' SHELL
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"$THIS_SH" -c 'echo ${::1}' SHELL
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#this also is not valid in bash, hush accepts it:
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"$THIS_SH" -c 'echo ${var:}' SHELL
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# then some funky ones
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"$THIS_SH" -c 'echo ${?:0}' SHELL
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# now some valid ones
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set --; echo "1 =|${1}|"
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set --; echo "1:1 =|${1:1}|"
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set --; echo "1:1:2=|${1:1:2}|"
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set --; echo "1::2 =|${1::2}|"
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set --; echo "1:1: =|${1:1:}|"
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set --; echo "1:: =|${1::}|"
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set -- 0123; echo "1 =|${1}|"
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set -- 0123; echo "1:1 =|${1:1}|"
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set -- 0123; echo "1:1:2=|${1:1:2}|"
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set -- 0123; echo "1::2 =|${1::2}|"
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set -- 0123; echo "1:1: =|${1:1:}|"
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set -- 0123; echo "1:: =|${1::}|"
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unset f; echo "f =|$f|"
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unset f; echo "f:1 =|${f:1}|"
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unset f; echo "f:1:2=|${f:1:2}|"
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unset f; echo "f::2 =|${f::2}|"
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unset f; echo "f:1: =|${f:1:}|"
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unset f; echo "f:: =|${f::}|"
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f=; echo "f =|$f|"
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f=; echo "f:1 =|${f:1}|"
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f=; echo "f:1:2=|${f:1:2}|"
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f=; echo "f::2 =|${f::2}|"
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f=; echo "f:1: =|${f:1:}|"
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f=; echo "f:: =|${f::}|"
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f=a; echo "f =|$f|"
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f=a; echo "f:1 =|${f:1}|"
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f=a; echo "f:1:2=|${f:1:2}|"
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f=a; echo "f::2 =|${f::2}|"
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f=a; echo "f:1: =|${f:1:}|"
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f=a; echo "f:: =|${f::}|"
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f=0123456789; echo "f =|$f|"
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f=0123456789; echo "f:1 =|${f:1}|"
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f=0123456789; echo "f:1:2=|${f:1:2}|"
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f=0123456789; echo "f::2 =|${f::2}|"
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f=0123456789; echo "f:1: =|${f:1:}|"
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f=0123456789; echo "f:: =|${f::}|"
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echo "Substrings from special vars"
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echo '? '"=|$?|"
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echo '?:1 '"=|${?:1}|"
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echo '?:1:2'"=|${?:1:2}|"
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echo '?::2 '"=|${?::2}|"
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echo '?:1: '"=|${?:1:}|"
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echo '?:: '"=|${?::}|"
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set -- 1 2 3 4 5 6 7 8 9 10 11
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echo '# '"=|$#|"
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echo '#:1 '"=|${#:1}|"
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echo '#:1:2'"=|${#:1:2}|"
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echo '#::2 '"=|${#::2}|"
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echo '#:1: '"=|${#:1:}|"
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echo '#:: '"=|${#::}|"
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echo "Substrings with expressions"
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f=01234567; echo 'f '"=|$f|"
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f=01234567; echo 'f:1+1:2+2 '"=|${f:1+1:2+2}|"
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f=01234567; echo 'f:-1:2+2 '"=|${f:-1:2+2}|"
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f=01234567; echo 'f:1:f '"=|${f:1:f}|"
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f=01234567; echo 'f:1:$f '"=|${f:1:$f}|"
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f=01234567; echo 'f:1:${f} '"=|${f:1:${f}}|"
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f=01234567; echo 'f:1:${f:3:1} '"=|${f:1:${f:3:1}}|"
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f=01234567; echo 'f:1:1`echo 1`'"=|${f:1:`echo 1`}|"
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echo Done
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