I'm having an issue with putty tools latest version compiled from source. I have them working OK on some Red Hat server but not others; I'm getting no output on all the tools. Example:

Working;

```
[root@server1 dir]# /usr/local/bin/puttygen -t rsa -b 2048 -C "tmp" -o /tmp/test
++++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++
Enter passphrase to save key:
Re-enter passphrase to verify:
[root@server1 dir]#
[root@server1 dir]# /usr/local/bin/puttygen
Usage: puttygen ( keyfile | -t type [ -b bits ] )
                [ -C comment ] [ -P ] [ -q ]
                [ -o output-keyfile ] [ -O type | -l | -L | -p ]
Use "puttygen --help" for more detail.
[root@server1 dir]#

```

Not working:

```
[root@server2 dir]# /usr/local/bin/puttygen -t rsa -b 2048 -C "tmp" -o /tmp/test

^C
[root@server2 dir]#
[root@server2 dir]# /usr/local/bin/puttygen
Usage: puttygen ( keyfile | -t type [ -b bits ] )
                [ -C comment ] [ -P ] [ -q ]
                [ -o output-keyfile ] [ -O type | -l | -L | -p ]
Use "puttygen --help" for more detail.
[root@server2 dir]#

```

The command just sits there until I escape out, it does this for puttygen, plink, etc..

To add some more to this, I've installed havegen to increase the entropy but plink doesn't return data. Example of running the command 'hostname' via plink:

Working server

```
[root@server working]# cat /proc/sys/kernel/random/entropy_avail
3181
[root@server working]# /usr/local/bin/plink -v -ssh -i /sftp/private_keys/backup username@hostname hostname
Connecting to xx.xx.xx.xx port 22
We claim version: SSH-2.0-PuTTY_Release_0.70
Server version: SSH-2.0-OpenSSH_6.6
We believe remote version has SSH-2 channel request bug
Using SSH protocol version 2
Doing ECDH key exchange with curve Curve25519 and hash SHA-256
Server also has ecdsa-sha2-nistp256/ssh-dss/ssh-rsa host keys, but we don't know any of them
Host key fingerprint is:
ssh-ed25519 256 8c:cb:64:77:c4:35:a9:80:99:51:c0:f8:73:24:1d:dc
Initialised AES-256 SDCTR client->server encryption
Initialised HMAC-SHA1 client->server MAC algorithm
Initialised AES-256 SDCTR server->client encryption
Initialised HMAC-SHA1 server->client MAC algorithm
Reading key file "/sftp/private_keys/backup"
Using username "username".
Offered public key
Offer of public key accepted
Authenticating with public key "rsa-key-20171024"
Sent public key signature
Access granted
Opening session as main channel
Opened main channel
Started a shell/command
Server sent command exit status 0
this.is.my.hostname.com
           Disconnected: All channels closed
[root@server working]#

```

No returned data server

```
[root@server notworking]# cat /proc/sys/kernel/random/entropy_avail
2962
[root@server notworking]# /usr/local/bin/plink -v -ssh -i /sftp/private_keys/backup username@hostname hostname
Connecting to xx.xx.xx.xx port 22
We claim version: SSH-2.0-PuTTY_Release_0.70
Server version: SSH-2.0-OpenSSH_6.6
We believe remote version has SSH-2 channel request bug
Using SSH protocol version 2
Doing ECDH key exchange with curve Curve25519 and hash SHA-256
Server also has ecdsa-sha2-nistp256/ssh-dss/ssh-rsa host keys, but we don't know any of them
Host key fingerprint is:
ssh-ed25519 256 8c:cb:64:77:c4:35:a9:80:99:51:c0:f8:73:24:1d:dc
Initialised AES-256 SDCTR client->server encryption
Initialised HMAC-SHA1 client->server MAC algorithm
Initialised AES-256 SDCTR server->client encryption
Initialised HMAC-SHA1 server->client MAC algorithm
Reading key file "/sftp/private_keys/backup"
Using username "backup".
Offered public key
Offer of public key accepted
Authenticating with public key "rsa-key-20171025"
Sent public key signature
Access granted
Opening session as main channel
Opened main channel
Started a shell/command
Server sent command exit status 0
Disconnected: All channels closed
[root@server notworking]#

```