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Code Issues Releases Wiki Activity

&& and || in Bash if statements.

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LumenTeun
2014-08-06 19:30:15 +01:00
parent 1c2bc08e19
commit 3f8dbe8e77
1 changed files with 12 additions and 0 deletions
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@@ -7,6 +7,7 @@ contributors:
- ["Alexandre Medeiros", "http://alemedeiros.sdf.org"] - ["Alexandre Medeiros", "http://alemedeiros.sdf.org"]
- ["Denis Arh", "https://github.com/darh"] - ["Denis Arh", "https://github.com/darh"]
- ["akirahirose", "https://twitter.com/akirahirose"] - ["akirahirose", "https://twitter.com/akirahirose"]
- ["Anton Strömkvist", "http://lutic.org/"]
filename: LearnBash.sh filename: LearnBash.sh
--- ---
@@ -81,6 +82,17 @@ fi
echo "Always executed" || echo "Only executed if first command fails" echo "Always executed" || echo "Only executed if first command fails"
echo "Always executed" && echo "Only executed if first command does NOT fail" echo "Always executed" && echo "Only executed if first command does NOT fail"
# To use && and || with if statements, you need multiple pairs of square brackets:
if [ $NAME == "Steve" ] && [ $AGE -eq 15 ]
then
echo "This will run if $NAME is Steve AND $AGE is 15."
fi
if [ $NAME == "Daniya" ] || [ $NAME == "Zach" ]
then
echo "This will run if $NAME is Daniya OR Zach."
fi
# Expressions are denoted with the following format: # Expressions are denoted with the following format:
echo $(( 10 + 5 )) echo $(( 10 + 5 ))