The following script prints the output down:/var/lib/ambari-server/resources/scripts/configs.sh get localhost c1 yarn-envThe output of the script: yarn_log_dir_prefix : /var/log/hadoop-yarn, yarn_pid_dir_prefix : /var/run/hadoop-yarn, yarn_user : yarn, yarn_user_nofile_limit : 32768, yarn_user_nproc_limit : 65536I want to add with pipeline the awk or perl oneline linear, the yarn-env in the first field of output as the following: (expected results)/var/lib/ambari-server/resources/scripts/configs.sh get localhost c1 yarn-env | awk ...yarn-env  yarn_log_dir_prefix : /var/log/hadoop-yarn,yarn-env  yarn_pid_dir_prefix : /var/run/hadoop-yarn,yarn-env  yarn_user : yarn,yarn-env  yarn_user_nofile_limit : 32768,yarn-env  yarn_user_nproc_limit : 65536
How can I add a string to the first field of the output with awk?
linux;awk;sed;rhel;perl
/var/lib/ambari-server/resources/scripts/configs.sh get localhost c1 yarn-env |awk '{ print yarn-env, $0 }'This short awk script will prepend the string yarn-env to each line of input from your command. The delimiter used is the awk variable OFS (output field separator, a single space by default), so if you want a tab between the two, use/var/lib/ambari-server/resources/scripts/configs.sh get localhost c1 yarn-env |awk -vOFS=\t '{ print yarn-env, $0 }'Alternatively, using sed:/var/lib/ambari-server/resources/scripts/configs.sh get localhost c1 yarn-env |sed 's/^/yarn-env /'