Comment by ColinWright

Quick hack - you can include the commands you pipe to with this:

    history                  \
        | sed "s/^[0-9 ]*//" \
        | sed "s/ *| */\n/g  \
        | awk '{print $1}'   \
        | sort               \
        | uniq -c            \
        | sort -rn           \
        | head -n 100        \
        > commands.txt

I haven't tried to account for pipe symbols inside strings - it didn't seem work it.

In case there are commands you want then to exclude (which I do) then you might want to "head -200", remove the commands you don't want to provide, and then trim to 100.

Added in edit - having done this a good half of my top 100 are actually scripts, so this is pretty pointless for me unless I rummage through them to find the common commands.

Added in edit again:

OK, here's a version that only includes actual system commands, and hence filters out all my personal scripts and commands:

    history                      \
        | sed "s/^[0-9 ]*//"     \
        | sed "s/ *| */\n/g"     \
        | awk '{print $1}'       \
        | xargs which            \
        | sed "s.^/usr.."        \
        | grep ^.bin             \
        | sed "s/^.*\///"        \
        | sort                   \
        | uniq -c                \
        | sort -rn               \
        > commands.txt