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bashのコマンド実行結果を変数に格納する

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bash内でコマンドの実行結果を変数に格納して色々処理したかった

####dateコマンドの実行結果を変数に格納する

com_date.sh
#!/bin/bash
com_date=$(date)
echo ${com_date}

ちなみにこんな感じで com_date = $(date) =の間にスペースを打つとエラーになる。

実行

$ sh com_date.sh
#=>2019年 10月 9日 水曜日 09:44:15 JST

psqlとかの実行結果も格納できる

#!/bin/bash
update_hoge=$(psql -h ${hoge_HOST} -p 5555 -U ${hege_USER} -d DBhoge -c "\
    UPDATE hogeSET hoge= '$string' WHERE hoge= 'hoge';\
    ")
echo ${update_hoge}

おわり

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