Too many arguments error while using shell script on cygwin

Question

I am trying to run a script on cygwin prompt.

ssh-keygen -t rsa $email
eval $(ssh-agent -s)
ssh-add ~/.ssh/id_rsa
mkdir -p /proj/env
ln -s /usr/bin/proj/env/bin

and running it as email="john.warnet" sh script1.sh.

But it is showing error as

  Too many arguments.
   usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa | rsa1]
              [-N new_passphrase] [-C comment] [-f output_keyfile]
   ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]
   ssh-keygen -i [-m key_format] [-f input_keyfile]
   ssh-keygen -e [-m key_format] [-f input_keyfile]
   ssh-keygen -y [-f input_keyfile]
   ssh-keygen -c [-P passphrase] [-C comment] [-f keyfile]
   ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]
   ssh-keygen -B [-f input_keyfile]
   ssh-keygen -D pkcs11
   ssh-keygen -F hostname [-f known_hosts_file] [-l]
   ssh-keygen -H [-f known_hosts_file]
   ssh-keygen -R hostname [-f known_hosts_file]
   ssh-keygen -r hostname [-f input_keyfile] [-g]
   ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]
   ssh-keygen -T output_file -f input_file [-v] [-a rounds] [-J num_lines]
              [-j start_line] [-K checkpt] [-W generator]
   ssh-keygen -s ca_key -I certificate_identity [-h] [-n principals]
              [-O option] [-V validity_interval] [-z serial_number] file ...
   ssh-keygen -L [-f input_keyfile]
   ssh-keygen -A
   ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]
              file ...
   ssh-keygen -Q -f krl_file file ...
   Agent pid 1344
   Identity added: /home/HP/.ssh/id_rsa (/home/HP/.ssh/id_rsa)

I tried running the script by writing the command on prompt instead of copying.But couldnt find the solution.

usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa | rsa1] [-N new_passphrase] [-C comment] [-f output_keyfile] It says you cannot pass more than 1 arguments with -t and the argument will be from these [dsa | ecdsa | ed25519 | rsa | rsa1] options only — Murli
– Murli, Commented Dec 7, 2015 at 6:38
So, what should i do then. Moreover when am trying to run the script as sh script1.sh email="[email protected]", no error is being shown, but the variable email can not be passed to the script and $email is being replaced by blank.I cant figure out how to execute the script then. — happymind113
– happymind113, Commented Dec 7, 2015 at 6:45
you are accessing email in wrong way inside your script1.sh you need to access it using correct way. most simple is like run your script as sh script1.sh [email protected] and access it inside script using $1 — Murli
– Murli, Commented Dec 7, 2015 at 6:49
I tried out this and ran the script as sh script1.sh [email protected] and replaced $email with $1, but still it is showing the same error as "too many arguments". — happymind113
– happymind113, Commented Dec 7, 2015 at 7:00
What i was trying to say was you can access this argument inside script.sh using $1 to do any other operation like echo or anything else. but you cannot pass with ssh-keygen -t rsa $1 due to reason I mentioned in my first comment. why do you need to pass it with ssh-keygen ?? — Murli
– Murli, Commented Dec 7, 2015 at 7:08

Murli · Accepted Answer · 2015-12-07 07:18:50Z

1

You can run it like below in case you need to pass email address as an argument to ssh-keygen

ssh-keygen -t rsa  -C $1

answered Dec 7, 2015 at 7:18

Murli

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