Package: cvs Version: 2:1.12.13+real-15 Severity: normal The cvs-switchroot program is a script but its interpeter is not installed. I assume that a dependency which should exist is simply missing.
~$ cvs-switchroot bash: /usr/bin/cvs-switchroot: /bin/mksh: bad interpreter: No such file or directory ~$ type cvs-switchroot cvs-switchroot is hashed (/usr/bin/cvs-switchroot) ~$ head -n 1 /usr/bin/cvs-switchroot #!/bin/mksh ~$ ls -l /bin/mksh /bin/ls: cannot access /bin/mksh: No such file or directory -- System Information: Debian Release: 8.2 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages cvs depends on: ii adduser 3.113+nmu3 ii dpkg 1.17.26 ii install-info 5.2.0.dfsg.1-6 ii libbsd0 0.7.0-2 ii libc6 2.19-18+deb8u1 ii libgssapi-krb5-2 1.12.1+dfsg-19+deb8u1 ii libkrb5-3 1.12.1+dfsg-19+deb8u1 ii zlib1g 1:1.2.8.dfsg-2+b1 Versions of packages cvs recommends: ii openssh-client 1:6.7p1-5 Versions of packages cvs suggests: pn mksh <none> ii rcs 5.9.3-1 -- no debconf information