import csv
import sys
import subprocess
def env_key_values(host):
"""
The subprocess.Popen will execute the env command on the remote
Linux server then return the results.
"""
ssh = subprocess.Popen(["ssh", host, "env"],
shell=False,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
"""
Read each line from stdout selecting only the varname=value lines.
Split the line on the '=' character. Use the first element as the
Linux environment variable name. Use the remaining elements as the value.
yield the result.
"""
for line in ssh.stdout:
str_line = line[:-1].decode("utf-8")
if "=" in str_line:
key_values = str_line.split("=")
values = "=".join(key_values[1:])
yield (key_values[0], values)
if __name__ == "__main__":
"""
Open desired file in write mode, do not enforce EOL character.
Create a CSV writer specifying the Windows EOL.
Use \t character for delimiter as the specified file in the question
used a .txt extension and the user wishes to import the file into Excel.
"""
with open("file.txt", "w", newline=None) as fout:
csv_out = csv.writer(fout, delimiter="\t" lineterminator="\r\n")
csv_out.writerow(["VARNAME","VALUE"])
for row in env_key_values("ldssbox01"):
csv_out.writerow(row)