strace of cat.

execve("/sbin/cat", ["cat", "../patches/tuxonice-for-linux-3."...], [/* 58 vars */]) = 0
brk(0)                                  = 0x20e9000
open("/usr/lib/libtrash.so", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \27\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=39424, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad3c5cf000
mmap(NULL, 2135032, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fad3c1a5000
mprotect(0x7fad3c1ae000, 2097152, PROT_NONE) = 0
mmap(0x7fad3c3ae000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9000) = 0x7fad3c3ae000
close(3)                                = 0
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=601829, ...}) = 0
mmap(NULL, 601829, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fad3c53c000
close(3)                                = 0
open("/usr/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\7\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1991416, ...}) = 0
mmap(NULL, 3815984, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fad3be01000
mprotect(0x7fad3bf9c000, 2093056, PROT_NONE) = 0
mmap(0x7fad3c19b000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19a000) = 0x7fad3c19b000
mmap(0x7fad3c1a1000, 14896, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fad3c1a1000
close(3)                                = 0
open("/usr/lib/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\16\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14576, ...}) = 0
mmap(NULL, 2109712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fad3bbfd000
mprotect(0x7fad3bc00000, 2093056, PROT_NONE) = 0
mmap(0x7fad3bdff000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fad3bdff000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad3c53b000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad3c53a000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad3c539000
arch_prctl(ARCH_SET_FS, 0x7fad3c53a700) = 0
mprotect(0x7fad3c19b000, 16384, PROT_READ) = 0
mprotect(0x7fad3bdff000, 4096, PROT_READ) = 0
mprotect(0x60b000, 4096, PROT_READ)     = 0
mprotect(0x7fad3c5d0000, 4096, PROT_READ) = 0
munmap(0x7fad3c53c000, 601829)          = 0
brk(0)                                  = 0x20e9000
brk(0x210a000)                          = 0x210a000
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=3937808, ...}) = 0
mmap(NULL, 3937808, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fad3b83b000
close(3)                                = 0
fstat(1, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0
open("../patches/tuxonice-for-linux-3.18.21-2015-09-08.patch", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=634650, ...}) = 0
fadvise64(3, 0, 0, POSIX_FADV_SEQUENTIAL) = 0
mmap(NULL, 139264, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad3c5ad000
read(3, "diff --git a/Documentation/kerne"..., 131072) = 131072
write(1, "diff --git a/Documentation/kerne"..., 131072) = 131072
read(3, "NFIG_PM_WAKELOCKS */\n+\n+#ifdef C"..., 131072) = 131072
write(1, "NFIG_PM_WAKELOCKS */\n+\n+#ifdef C"..., 131072) = 131072
read(3, "* We don't do a sanity check her"..., 131072) = 131072
write(1, "* We don't do a sanity check her"..., 131072) = 131072
read(3, "to use mutex_lock_nested below. "..., 131072) = 131072
write(1, "to use mutex_lock_nested below. "..., 131072) = 131072
read(3, "available = get_lowmem_size(page"..., 131072) = 110362
write(1, "available = get_lowmem_size(page"..., 110362) = 110362
read(3, "", 131072)                     = 0
munmap(0x7fad3c5ad000, 139264)          = 0
close(3)                                = 0
close(1)                                = 0
close(2)                                = 0
exit_group(0)                           = ?
+++ exited with 0 +++
patch: **** can't open file Documentation/kernel-parameters.txt : Bad file descriptor