81 lines
2.1 KiB
Bash
Executable file
81 lines
2.1 KiB
Bash
Executable file
#!/bin/bash
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#
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# Sample Hello World! bash script...
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#
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declare -a animals=("camel" "llama" "owl")
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declare -A FRUIT_COLOR
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FRUIT_COLOR=( ["apple"]="red" ["banana"]="yellow")
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VERINFO=`git describe --abbrev=7 --dirty --always --tags`
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# Obligatory Hello World with some version info
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echo "Hello Bash World! Version: $VERINFO"
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# Show list of command line arguments
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echo "Command line args: $*"
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# Determine number of physical CPU sockets
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SOCKETCOUNT=`cat /proc/cpuinfo | grep 'physical id' | sort | uniq | wc -l`
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echo "CPU socket count: $SOCKETCOUNT"
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# print out our animals array in reverse-sorted order
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echo ""; echo "Value of animals array:"
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for i in `(for animal in "${animals[@]}"; do echo "$animal"; done | sort --reverse)`
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do
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echo "item = $i"
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if [[ "$i" == "${animals[0]}" ]]; then
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echo " Condition is TRUE, $i == ${animals[0]}"
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else
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echo " Condition is FALSE, $i != ${animals[0]}"
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fi
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done
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# print out our FRUIT_COLOR associative array (key/value pairs)
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echo ""; echo "Value of fruit_color hash:"
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declare -A sorted_fruit
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for fruit in "${!FRUIT_COLOR[@]}"; do
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echo "$fruit = ${FRUIT_COLOR["$fruit"]}";
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done | sort --reverse
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# Read a non-existent environment variable and supply default value...
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SOME_ENV_VAR=${PROBABLY_NOT_THERE-Default Value}
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echo ""
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echo "PROBABLY_NOT_THERE is set to '$SOME_ENV_VAR'"
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echo ""
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# Let's read in the PATH variable from the OS and print it out...
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PATH_ENV_VAR=$PATH
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echo "OS PATH var is set to: '$PATH'"
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echo ""
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# Let's manipulate PATH variable and then restore it
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echo "Adding :/test to PATH variable"
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PATH=$PATH:/test
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echo "OS PATH var is set to: '$PATH'"
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echo ""
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echo "Restoring original PATH value."
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PATH=$PATH_ENV_VAR
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echo "OS PATH var is set to: '$PATH'"
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echo ""
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# Let's create the file test.out and write animals array to it...
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echo ""
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echo "Writing test.out file..."
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rm -f test.out
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for i in ${animals[@]}
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do
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echo $i >> test.out
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done
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# Now open the file we wrote and read it back...
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echo ""
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echo "Contents of test.out file:"
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LINECOUNT=1
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while read line
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do
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echo "line $LINECOUNT: $line"
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LINECOUNT=$[$LINECOUNT +1]
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done <test.out
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# All done, finish with normal exit code.
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exit 0
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