user@host ~ $ time strace gcc
execve("/usr/bin/gcc", ["gcc"], [/* 65 vars */]) = 0
brk(0)                                  = 0x603000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b6d7f14d000
uname({sys="Linux", node="atl64", ...}) = 0
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=117692, ...}) = 0
mmap(NULL, 117692, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b6d7f14e000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220\334\1\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1301648, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b6d7f16b000
mmap(NULL, 3408120, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b6d7f34e000
mprotect(0x2b6d7f485000, 2097152, PROT_NONE) = 0
mmap(0x2b6d7f685000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x137000) = 0x2b6d7f685000
mmap(0x2b6d7f68a000, 16632, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2b6d7f68a000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b6d7f68f000
arch_prctl(ARCH_SET_FS, 0x2b6d7f68f6f0) = 0
mprotect(0x2b6d7f685000, 12288, PROT_READ) = 0
mprotect(0x2b6d7f34c000, 4096, PROT_READ) = 0
munmap(0x2b6d7f14e000, 117692)          = 0
brk(0)                                  = 0x603000
brk(0x624000)                           = 0x624000
stat("/usr/kde/3.5/bin/gcc", 0x7fff2b970330) = -1 ENOENT (No such file or directory)
stat("/usr/local/bin/gcc", 0x7fff2b970330) = -1 ENOENT (No such file or directory)
stat("/usr/bin/gcc", {st_mode=S_IFREG|0755, st_size=10432, ...}) = 0
stat("/bin/gcc", 0x7fff2b970330)        = -1 ENOENT (No such file or directory)
stat("/opt/bin/gcc", 0x7fff2b970330)    = -1 ENOENT (No such file or directory)
stat("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/gcc", {st_mode=S_IFREG|0755, st_size=226240, ...}) = 0
execve("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/gcc", ["/usr/x86_64-pc-linux-gnu/gcc-bin"...], [/* 65 vars */]) = 0
brk(0)                                  = 0x638000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b979b31d000
uname({sys="Linux", node="atl64", ...}) = 0
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=117692, ...}) = 0
mmap(NULL, 117692, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b979b31e000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220\334\1\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1301648, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b979b33b000
mmap(NULL, 3408120, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b979b51e000
mprotect(0x2b979b655000, 2097152, PROT_NONE) = 0
mmap(0x2b979b855000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x137000) = 0x2b979b855000
mmap(0x2b979b85a000, 16632, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2b979b85a000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b979b85f000
arch_prctl(ARCH_SET_FS, 0x2b979b85f6f0) = 0
mprotect(0x2b979b855000, 12288, PROT_READ) = 0
mprotect(0x2b979b51c000, 4096, PROT_READ) = 0
munmap(0x2b979b31e000, 117692)          = 0
brk(0)                                  = 0x638000
brk(0x659000)                           = 0x659000
open("/usr/lib64/locale/locale-archive", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/locale.alias", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2586, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b979b31e000
read(3, "# Locale name alias data base.\n#"..., 4096) = 2586
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x2b979b31e000, 4096)            = 0
open("/usr/lib64/locale/pt_PT.utf8/LC_CTYPE", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=254020, ...}) = 0
mmap(NULL, 254020, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b979b33c000
close(3)                                = 0
open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=25488, ...}) = 0
mmap(NULL, 25488, PROT_READ, MAP_SHARED, 3, 0) = 0x2b979b37b000
close(3)                                = 0
open("/usr/lib64/locale/pt_PT.utf8/LC_MESSAGES", O_RDONLY) = 3
fstat(3, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
close(3)                                = 0
open("/usr/lib64/locale/pt_PT.utf8/LC_MESSAGES/SYS_LC_MESSAGES", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=54, ...}) = 0
mmap(NULL, 54, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b979b382000
close(3)                                = 0
open("/usr/share/gcc-data/x86_64-pc-linux-gnu/4.2.0/locale/pt_PT.utf8/LC_MESSAGES/gcc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/gcc-data/x86_64-pc-linux-gnu/4.2.0/locale/pt_PT/LC_MESSAGES/gcc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/gcc-data/x86_64-pc-linux-gnu/4.2.0/locale/pt.utf8/LC_MESSAGES/gcc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/gcc-data/x86_64-pc-linux-gnu/4.2.0/locale/pt/LC_MESSAGES/gcc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
rt_sigaction(SIGINT, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGINT, {0x410ba4, [INT], SA_RESTORER|SA_RESTART, 0x2b979b54e6d0}, {SIG_IGN}, 8) = 0
rt_sigaction(SIGHUP, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGHUP, {0x410ba4, [HUP], SA_RESTORER|SA_RESTART, 0x2b979b54e6d0}, {SIG_IGN}, 8) = 0
rt_sigaction(SIGTERM, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGTERM, {0x410ba4, [TERM], SA_RESTORER|SA_RESTART, 0x2b979b54e6d0}, {SIG_IGN}, 8) = 0
rt_sigaction(SIGPIPE, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGPIPE, {0x410ba4, [PIPE], SA_RESTORER|SA_RESTART, 0x2b979b54e6d0}, {SIG_IGN}, 8) = 0
rt_sigaction(SIGCHLD, {SIG_DFL}, {SIG_DFL}, 8) = 0
lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/gcc", {st_mode=S_IFLNK|0777, st_size=23, ...}) = 0
readlink("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/gcc", "x86_64-pc-linux-gnu-gcc", 4096) = 23
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/x86_64-pc-linux-gnu-gcc", {st_mode=S_IFREG|0755, st_size=226240, ...}) = 0
lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/gcc", {st_mode=S_IFLNK|0777, st_size=23, ...}) = 0
readlink("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/gcc", "x86_64-pc-linux-gnu-gcc", 4096) = 23
lstat("/usr/x86_64-pc-linux-gnu/gcc-bin/4.2.0/x86_64-pc-linux-gnu-gcc", {st_mode=S_IFREG|0755, st_size=226240, ...}) = 0
access("/usr/lib/gcc/x86_64-pc-linux-gnu/4.2.0/", X_OK) = 0
access("/usr/lib/gcc/x86_64-pc-linux-gnu/4.2.0/", X_OK) = 0
access("/usr/lib/gcc/x86_64-pc-linux-gnu/4.2.0/specs", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/lib/gcc/x86_64-pc-linux-gnu/4.2.0/specs", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/lib/gcc/x86_64-pc-linux-gnu/4.2.0/../../../../x86_64-pc-linux-gnu/lib/x86_64-pc-linux-gnu/4.2.0/specs", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/lib/gcc/x86_64-pc-linux-gnu/4.2.0/../../../../x86_64-pc-linux-gnu/lib/specs", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/lib/gcc/x86_64-pc-linux-gnu/specs", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/lib/gcc/x86_64-pc-linux-gnu/4.2.0/", X_OK) = 0
write(2, "gcc: ", 5gcc: )                    = 5
write(2, "no input files", 14no input files)          = 14
write(2, "\n", 1
)                       = 1
exit_group(1)                           = ?

real	0m0.008s
user	0m0.000s
sys	0m0.006s