78 lines
1.0 KiB
Plaintext
78 lines
1.0 KiB
Plaintext
# Nested elements and other complex cases
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# String with backtick inclusion
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"x`ls`"
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# Nested string
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"x`ls "*.c"`"
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# Not terminated at first "
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"x`ls" # "`" #
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# String with command inclusion
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"x$(ls)"
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# Nested command
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$(ls -la$(ls *.c))
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# Check strings and backticks in command
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echo $('ls' "." `ls` $'.' $".")
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# $( not terminated by ) if contains unterminated string
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$('x) # ') #
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$("x) # ") #
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$(`x) # `) # Bash doesn't like this
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$($'x) # ') #
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$($"x) # ") #
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# Parameter expansion
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var=abcdef
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sub=abc
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rep='& '
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echo ${var/$sub/"${rep}}"} #
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# '$' in variable
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echo $$PID
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echo $var${var}
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# Here-doc with internal elements
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cat <<EOF
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$scalar
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${var}
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$((1+2))
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$(pwd)
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`pwd`
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EOF
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# Quoted delimiter treats here-doc as simple string
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cat <<"EOF"
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$scalar
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${var}
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$((1+2))
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$(pwd)
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`pwd`
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EOF
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# Escaped same as quoted
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cat <<\EOF
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$scalar
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EOF
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# Nesting
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echo "$((1 + 2))" #
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echo "$[1 + 2]" #
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# Multiple nesting levels
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$(ls -la$(ls $(c) $'*.c' ` $(${s})`))
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# Multi-line
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$(ls |
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more)
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$(
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`x`
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"x"
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`ls`
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$'x'
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$"x"
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)
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#end -- checks termination of previous
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