Echo (Bash)
(Doorverwezen vanaf Echo & variabelen (Bash))
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Newline
Er is geen eenduidige manier om met echo een newline te generen. Oa. daarom is printf waarschijnlijk beter dan echo [1]
Variabelen
Bv.:
#!/bin/bash # a="hoi" echo $a echo "$a" echo $a"hallo-1" echo "$a""hallo-2" echo "$ahallo-3 " echo "tekst1""$a""tekst2"
Output:
hoi hoi hoihallo-1 hoihallo-2 -3 tekst1hoitekst2
Strip whitespace around output
There are some nifty tricks to make the output of commands less messy. They seem to involve echo and when I was looking for this around 2023.08, I looked here first. Some examples:
echo "Name (2): $(wp --user=4 wc product_attribute_term get $taxid $i --field=name --format=csv | grep .)"
The part |grep . actually strips the messy things.
More: Pipelining & redirection (Bash)#Trim whitespace around output
Some alternatives (didn't try them out):
echo -n "$(your_command)" echo -n "$(your_command)" | tr -d '[:space:]' your_command | grep -o '.'