関連ワード:  how to read variable in shell script    how to read environment variable in shell script    how to read variable value in shell script    how to read multiple variables in shell script    how to read variables from file in shell script    how to read environment variable in bash script    how to read variable from another file in shell script    how to read a file into a variable in shell script    how to read and print the value of variable in shell script    how to read a variable value from a file in shell script