mirror of https://github.com/tLDP/LDP
48 lines
616 B
Bash
48 lines
616 B
Bash
#!/bin/bash
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# ifs.sh
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# $IFS treats whitespace differently than other characters.
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output_args_one_per_line()
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{
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for arg
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do echo "[$arg]"
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done
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}
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echo; echo "IFS=\" \""
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echo "-------"
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IFS=" "
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var=" a b c "
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output_args_one_per_line $var # output_args_one_per_line `echo " a b c "`
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#
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# [a]
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# [b]
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# [c]
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echo; echo "IFS=:"
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echo "-----"
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IFS=:
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var=":a::b:c:::" # Same as above, but substitute ":" for " ".
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output_args_one_per_line $var
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#
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# []
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# [a]
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# []
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# [b]
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# [c]
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# []
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# []
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# []
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# The same thing happens with the "FS" field separator in awk.
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# Thank you, Stephane Chazelas.
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echo
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exit 0
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