Running "apt-get update" does not update the system, it updates the list of packages that apt-get needs to refer to.
apt-get update apt-cache search gcc apt-get install gcc-4.7 apt-get remove gcc-4.7 apt-get autoremove apt-get install gccThis tells me that gcc 4.4, 4.6, and 4.7 are all available. It wants to install 4.6 by default, but I (unwisely perhaps) decide to install the latest version (4.7). After doing this, typing cc or gcc yield command not found. The commands are in /usr/bin as gcc-4.7 as though they are some "experimental" version, so I back off and install 4.6. I have no clue, but I want to take the path of least resistance.
t@beaglebone:~# apt-get install gcc-4.7 Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: binutils cpp-4.7 libc-bin libc-dev-bin libc6 libc6-dev libgmp10 libgomp1 libmpc2 libmpfr4 linux-libc-dev manpages manpages-dev Suggested packages: binutils-doc gcc-4.7-locales libmudflap0-4.7-dev gcc-4.7-doc libgcc1-dbg libgomp1-dbg libitm1-dbg libquadmath-dbg libmudflap0-dbg libcloog-ppl0 libppl-c2 libppl7 binutils-gold glibc-doc man-browser Recommended packages: gcc c-compiler The following NEW packages will be installed: binutils cpp-4.7 gcc-4.7 libc-dev-bin libc6-dev libgmp10 libgomp1 libmpc2 libmpfr4 linux-libc-dev manpages manpages-dev The following packages will be upgraded: libc-bin libc6 2 upgraded, 12 newly installed, 0 to remove and 28 not upgraded. Need to get 25.7 MB of archives. After this operation, 45.4 MB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://security.debian.org/ wheezy/updates/main libc-bin armhf 2.13-38+deb7u11 [1169 kB] Get:2 http://ftp.us.debian.org/debian/ wheezy/main libgmp10 armhf 2:5.0.5+dfsg-2 [198 kB] Get:3 http://ftp.us.debian.org/debian/ wheezy/main libgomp1 armhf 4.7.2-5 [25.7 kB] Get:4 http://ftp.us.debian.org/debian/ wheezy/main libmpfr4 armhf 3.1.0-5 [516 kB] Get:5 http://security.debian.org/ wheezy/updates/main libc6 armhf 2.13-38+deb7u11 [3903 kB] Get:6 http://ftp.us.debian.org/debian/ wheezy/main libmpc2 armhf 0.9-4+b1 [31.9 kB] Get:7 http://ftp.us.debian.org/debian/ wheezy/main manpages all 3.44-1 [795 kB] Get:8 http://security.debian.org/ wheezy/updates/main binutils armhf 2.22-8+deb7u3 [4479 kB] Get:9 http://ftp.us.debian.org/debian/ wheezy/main cpp-4.7 armhf 4.7.2-5 [4431 kB] Get:10 http://security.debian.org/ wheezy/updates/main libc-dev-bin armhf 2.13-38+deb7u11 [221 kB] Get:11 http://security.debian.org/ wheezy/updates/main linux-libc-dev armhf 3.2.81-2 [835 kB] Get:12 http://security.debian.org/ wheezy/updates/main libc6-dev armhf 2.13-38+deb7u11 [2353 kB] Get:13 http://ftp.us.debian.org/debian/ wheezy/main gcc-4.7 armhf 4.7.2-5 [4980 kB] Get:14 http://ftp.us.debian.org/debian/ wheezy/main manpages-dev all 3.44-1 [1737 kB] Fetched 25.7 MB in 11s (2216 kB/s) Preconfiguring packages ... (Reading database ... 11157 files and directories currently installed.) Preparing to replace libc-bin 2.13-38+deb7u8 (using .../libc-bin_2.13-38+deb7u11_armhf.deb) ... Unpacking replacement libc-bin ... Setting up libc-bin (2.13-38+deb7u11) ... (Reading database ... 11157 files and directories currently installed.) Preparing to replace libc6:armhf 2.13-38+deb7u8 (using .../libc6_2.13-38+deb7u11_armhf.deb) ... Unpacking replacement libc6:armhf ... Setting up libc6:armhf (2.13-38+deb7u11) ... Selecting previously unselected package libgmp10:armhf. (Reading database ... 11157 files and directories currently installed.) Unpacking libgmp10:armhf (from .../libgmp10_2%3a5.0.5+dfsg-2_armhf.deb) ... Selecting previously unselected package libgomp1:armhf. Unpacking libgomp1:armhf (from .../libgomp1_4.7.2-5_armhf.deb) ... Selecting previously unselected package libmpfr4:armhf. Unpacking libmpfr4:armhf (from .../libmpfr4_3.1.0-5_armhf.deb) ... Selecting previously unselected package libmpc2:armhf. Unpacking libmpc2:armhf (from .../libmpc2_0.9-4+b1_armhf.deb) ... Selecting previously unselected package manpages. Unpacking manpages (from .../manpages_3.44-1_all.deb) ... Selecting previously unselected package binutils. Unpacking binutils (from .../binutils_2.22-8+deb7u3_armhf.deb) ... Selecting previously unselected package cpp-4.7. Unpacking cpp-4.7 (from .../cpp-4.7_4.7.2-5_armhf.deb) ... Selecting previously unselected package gcc-4.7. Unpacking gcc-4.7 (from .../gcc-4.7_4.7.2-5_armhf.deb) ... Selecting previously unselected package libc-dev-bin. Unpacking libc-dev-bin (from .../libc-dev-bin_2.13-38+deb7u11_armhf.deb) ... Selecting previously unselected package linux-libc-dev:armhf. Unpacking linux-libc-dev:armhf (from .../linux-libc-dev_3.2.81-2_armhf.deb) ... Selecting previously unselected package libc6-dev:armhf. Unpacking libc6-dev:armhf (from .../libc6-dev_2.13-38+deb7u11_armhf.deb) ... Selecting previously unselected package manpages-dev. Unpacking manpages-dev (from .../manpages-dev_3.44-1_all.deb) ... Setting up libgmp10:armhf (2:5.0.5+dfsg-2) ... Setting up libgomp1:armhf (4.7.2-5) ... Setting up libmpfr4:armhf (3.1.0-5) ... Setting up libmpc2:armhf (0.9-4+b1) ... Setting up manpages (3.44-1) ... Setting up binutils (2.22-8+deb7u3) ... Setting up cpp-4.7 (4.7.2-5) ... Setting up gcc-4.7 (4.7.2-5) ... Setting up libc-dev-bin (2.13-38+deb7u11) ... Setting up linux-libc-dev:armhf (3.2.81-2) ... Setting up libc6-dev:armhf (2.13-38+deb7u11) ... Setting up manpages-dev (3.44-1) ... root@beaglebone:~# apt-get remove gcc-4.7 Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: binutils cpp-4.7 libc-dev-bin libc6-dev libgmp10 libgomp1 libmpc2 libmpfr4 linux-libc-dev manpages manpages-dev Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: gcc-4.7 0 upgraded, 0 newly installed, 1 to remove and 28 not upgraded. After this operation, 10.9 MB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 14718 files and directories currently installed.) Removing gcc-4.7 ... root@beaglebone:~# apt-get install gcc Reading package lists... Done Building dependency tree Reading state information... Done The following package was automatically installed and is no longer required: cpp-4.7 Use 'apt-get autoremove' to remove it. The following extra packages will be installed: cpp cpp-4.6 gcc-4.6 gcc-4.6-base Suggested packages: cpp-doc gcc-4.6-locales gcc-multilib make autoconf automake1.9 libtool flex bison gdb gcc-doc libmudflap0-4.6-dev gcc-4.6-doc libgcc1-dbg libgomp1-dbg libquadmath-dbg libmudflap0-dbg binutils-gold The following NEW packages will be installed: cpp cpp-4.6 gcc gcc-4.6 gcc-4.6-base 0 upgraded, 5 newly installed, 0 to remove and 28 not upgraded. Need to get 8518 kB of archives. After this operation, 16.5 MB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://ftp.us.debian.org/debian/ wheezy/main gcc-4.6-base armhf 4.6.3-14 [141 kB] Get:2 http://ftp.us.debian.org/debian/ wheezy/main cpp-4.6 armhf 4.6.3-14 [4065 kB] Get:3 http://ftp.us.debian.org/debian/ wheezy/main cpp armhf 4:4.6.3-8 [16.7 kB] Get:4 http://ftp.us.debian.org/debian/ wheezy/main gcc-4.6 armhf 4.6.3-14 [4290 kB] Get:5 http://ftp.us.debian.org/debian/ wheezy/main gcc armhf 4:4.6.3-8 [5012 B] Fetched 8518 kB in 3s (2130 kB/s) Selecting previously unselected package gcc-4.6-base:armhf. (Reading database ... 14655 files and directories currently installed.) Unpacking gcc-4.6-base:armhf (from .../gcc-4.6-base_4.6.3-14_armhf.deb) ... Selecting previously unselected package cpp-4.6. Unpacking cpp-4.6 (from .../cpp-4.6_4.6.3-14_armhf.deb) ... Selecting previously unselected package cpp. Unpacking cpp (from .../cpp_4%3a4.6.3-8_armhf.deb) ... Selecting previously unselected package gcc-4.6. Unpacking gcc-4.6 (from .../gcc-4.6_4.6.3-14_armhf.deb) ... Selecting previously unselected package gcc. Unpacking gcc (from .../gcc_4%3a4.6.3-8_armhf.deb) ... Setting up gcc-4.6-base:armhf (4.6.3-14) ... Setting up cpp-4.6 (4.6.3-14) ... Setting up cpp (4:4.6.3-8) ... Setting up gcc-4.6 (4.6.3-14) ... Setting up gcc (4:4.6.3-8) ... root@beaglebone:~# apt-get autoremove Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: cpp-4.7 0 upgraded, 0 newly installed, 1 to remove and 28 not upgraded. After this operation, 8189 kB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 14736 files and directories currently installed.) Removing cpp-4.7 ...
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