mirror of https://github.com/tLDP/LDP
21 lines
524 B
Bash
21 lines
524 B
Bash
#!/bin/bash
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# lastpipe-option.sh
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line='' # Null value.
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echo "\$line = "$line"" # $line =
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echo
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shopt -s lastpipe # Error on Bash version -lt 4.2.
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echo "Exit status of attempting to set \"lastpipe\" option is $?"
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# 1 if Bash version -lt 4.2, 0 otherwise.
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echo
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head -1 $0 | read line # Pipe the first line of the script to read.
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# ^^^^^^^^^ Not in a subshell!!!
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echo "\$line = "$line""
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# Older Bash releases $line =
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# Bash version 4.2 $line = #!/bin/bash
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