# strace of mysql client frozen on login #root 20939 10887 0 13:51 pts/0 00:00:00 mysql -u root -p -h 127.0.0.1 -P 4040 $ strace -p 20939 Process 20939 attached - interrupt to quit read(0, "s", 1) = 1 write(1, "s", 1) = 1 read(0, "e", 1) = 1 write(1, "e", 1) = 1 read(0, "l", 1) = 1 write(1, "l", 1) = 1 read(0, "e", 1) = 1 write(1, "e", 1) = 1 read(0, "c", 1) = 1 write(1, "c", 1) = 1 read(0, "t", 1) = 1 write(1, "t", 1) = 1 read(0, " ", 1) = 1 write(1, " ", 1) = 1 read(0, "c", 1) = 1 write(1, "c", 1) = 1 read(0, "o", 1) = 1 write(1, "o", 1) = 1 read(0, "u", 1) = 1 write(1, "u", 1) = 1 read(0, "n", 1) = 1 write(1, "n", 1) = 1 read(0, "t", 1) = 1 write(1, "t", 1) = 1 read(0, "(", 1) = 1 write(1, "(", 1) = 1 read(0, "*", 1) = 1 write(1, "*", 1) = 1 read(0, ")", 1) = 1 write(1, ")", 1) = 1 read(0, " ", 1) = 1 write(1, " ", 1) = 1 read(0, "f", 1) = 1 write(1, "f", 1) = 1 read(0, "r", 1) = 1 write(1, "r", 1) = 1 read(0, "o", 1) = 1 write(1, "o", 1) = 1 read(0, "m", 1) = 1 write(1, "m", 1) = 1 read(0, " ", 1) = 1 write(1, " ", 1) = 1 read(0, "u", 1) = 1 write(1, "u", 1) = 1 read(0, "s", 1) = 1 write(1, "s", 1) = 1 read(0, "\177", 1) = 1 write(1, "\10\33[K", 4) = 4 read(0, "\177", 1) = 1 write(1, "\10\33[K", 4) = 4 read(0, "m", 1) = 1 write(1, "m", 1) = 1 read(0, "y", 1) = 1 write(1, "y", 1) = 1 read(0, "s", 1) = 1 write(1, "s", 1) = 1 read(0, "q", 1) = 1 write(1, "q", 1) = 1 read(0, "l", 1) = 1 write(1, "l", 1) = 1 read(0, ".", 1) = 1 write(1, ".", 1) = 1 read(0, "u", 1) = 1 write(1, "u", 1) = 1 read(0, "s", 1) = 1 write(1, "s", 1) = 1