diff options
| -rw-r--r-- | strace.1 | 12 | ||||
| -rw-r--r-- | strace.c | 6 |
2 files changed, 14 insertions, 4 deletions
@@ -43,7 +43,7 @@ strace \- trace system calls and signals .SH SYNOPSIS .B strace [ -.B \-CdffhiqrtttTvxx +.B \-CdDffhiqrtttTvxx ] [ .BI \-a column @@ -84,6 +84,9 @@ strace \- trace system calls and signals .B strace .B \-c [ +.B \-D +] +[ .BI \-e expr ] \&... @@ -255,6 +258,13 @@ Like .B \-c but also print regular output while processes are running. .TP +.B \-D +(Not available on SVR4 and FreeBSD.) +Run tracer process as a detached grandchild, not as parent of the +tracee. This reduces the visible effect of +.B strace +by keeping the tracee a direct child of the calling process. +.TP .B \-d Show some debugging output of .B strace @@ -168,12 +168,13 @@ FILE *ofp; int exitval; { fprintf(ofp, "\ -usage: strace [-dffhiqrtttTvVxx] [-a column] [-e expr] ... [-o file]\n\ +usage: strace [-CdDffhiqrtttTvVxx] [-a column] [-e expr] ... [-o file]\n\ [-p pid] ... [-s strsize] [-u username] [-E var=val] ...\n\ [command [arg ...]]\n\ - or: strace -c -D [-e expr] ... [-O overhead] [-S sortby] [-E var=val] ...\n\ + or: strace -c [-D] [-e expr] ... [-O overhead] [-S sortby] [-E var=val] ...\n\ [command [arg ...]]\n\ -c -- count time, calls, and errors for each syscall and report summary\n\ +-C -- like -c but also print regular output while processes are running\n\ -f -- follow forks, -ff -- with output into separate files\n\ -F -- attempt to follow vforks, -h -- print help message\n\ -i -- print instruction pointer at time of syscall\n\ @@ -746,7 +747,6 @@ main(int argc, char *argv[]) debug++; break; #ifndef USE_PROCFS - /* Experimental, not documented in manpage yet. */ case 'D': daemonized_tracer = 1; break; |