diff options
Diffstat (limited to 'usr.bin/fstat/fstat.1')
| -rw-r--r-- | usr.bin/fstat/fstat.1 | 93 |
1 files changed, 90 insertions, 3 deletions
diff --git a/usr.bin/fstat/fstat.1 b/usr.bin/fstat/fstat.1 index 58d1e1f9aa225..77bfc8588c2aa 100644 --- a/usr.bin/fstat/fstat.1 +++ b/usr.bin/fstat/fstat.1 @@ -28,7 +28,7 @@ .\" @(#)fstat.1 8.3 (Berkeley) 2/25/94 .\" $FreeBSD$ .\" -.Dd June 17, 2020 +.Dd November 19, 2020 .Dt FSTAT 1 .Os .Sh NAME @@ -51,7 +51,7 @@ is the working directory, root directory, jail root directory, active executable text, or kernel trace file for that process. If no options are specified, .Nm -reports on all open files in the system. +reports on all open files in the system for processes the user has access to. .Pp The following options are available: .Bl -tag -width "-N system" @@ -118,7 +118,7 @@ The process id. The file number in the per-process open file table or one of the following special names: .Pp -.Bl -tag -offset indent -compact +.Bl -tag -width jail -offset indent -compact .It Sy jail jail root directory .It Sy mmap @@ -235,6 +235,93 @@ a double arrow .Pq Ql <-> . For UNIX/local sockets either the local or remote address is shown, depending on which one is available. +.Sh EXIT STATUS +.Ex -std +.Sh EXAMPLES +Show all open files except those opened by +.Nm +itself: +.Bd -literal -offset indent +$ fstat | awk '$2 != "fstat"' +USER CMD PID FD MOUNT INUM MODE SZ|DV R/W +alice bash 469 text /usr/local 143355 -rwxr-xr-x 1166448 r +alice bash 469 ctty /dev 346 crw--w---- pts/81 rw +\&... +.Ed +.Pp +Report all files opened by the current shell in the same file system as +.Pa /usr/local +including memory-mapped files: +.Bd -literal -offset indent +$ fstat -m -p $$ -f /usr/local +USER CMD PID FD MOUNT INUM MODE SZ|DV R/W +bob bash 469 text /usr/local 143355 -rwxr-xr-x 1166448 r +bob bash 469 mmap /usr/local 143355 -rwxr-xr-x 1166448 r +\&... +.Ed +.Pp +Requesting information about a file that is not opened results in just a +header line instead of an error: +.Bd -literal -offset indent +$ fstat /etc/rc.conf +USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME +.Ed +.Pp +All parameters after +.Fl f +will be interpreted as files, so the following will not work as expected: +.Bd -literal -offset indent +$ fstat -f /usr/local -m -p $$ +fstat: -m: No such file or directory +fstat: -p: No such file or directory +fstat: 469: No such file or directory +\&... +.Ed +.Pp +Show number of pipes opened by firefox processes: +.Bd -literal -offset indent +$ fstat | awk '$2=="firefox" && $5=="pipe"' | wc -l +.Ed +.Pp +Show processes belonging to user +.Dq bob +whose standard error descriptor is opened in ttyv0: +.Bd -literal -offset indent +$ fstat -u bob | awk '$4 == 2 && $8 == "ttyv0"' +bob firefox 77842 2 /dev 103 crw------- ttyv0 rw +bob xinit 1194 2 /dev 103 crw------- ttyv0 rw +\&... +.Ed +.Pp +Show opened TCP sockets. +This output resembles the one produced by +.Ql netstat -A -p tcp +: +.Bd -literal -offset indent +$ fstat | awk '$7 == "tcp"' +alice firefox 77991 32* internet stream tcp fffff800b7f147a0 +alice firefox 77991 137* internet stream tcp fffff800b7f12b70 +\&... +.Ed +.Pp +Show a list of processes with files opened in the current directory +mimicking the output of +.Xr fuser 1 +: +.Bd -literal -offset indent +$ fstat . | awk 'NR > 1 {printf "%d%s(%s) ", $3, $4, $1;}' +2133wd(alice) 2132wd(alice) 1991wd(alice) +.Ed +.Pp +Create a list of processes sorted by number of opened files in desdencing order: +.Bd -literal -offset indent +$ fstat | awk 'NR > 1 {print $2;}' | sort | uniq -c | sort -r + 728 firefox + 23 bash + 14 sort + 8 fstat + 7 awk +.Ed .Sh SEE ALSO .Xr fuser 1 , .Xr netstat 1 , |