Answer Posted / arvind kumar

Sudo -U Postgres psql Database_name;
It will prompt you for password give correct password and
you can access the given database if it exist.

Does cp command overwrite files?

1142

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What do chmod, chown, chgrp commands do?

1229

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1267

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Enlist some filename manipulation commands in unix.

1098

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Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?

1164

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Who wrote grep?

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1217

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1126

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1066

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1065

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