Fstat
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'''fstat -f /usr/local/etc''' - only return locked files from the filesystem containing '''/usr/local/etc/''' ('''/usr''', on most systems) | '''fstat -f /usr/local/etc''' - only return locked files from the filesystem containing '''/usr/local/etc/''' ('''/usr''', on most systems) | ||
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'''fstat /usr/local/sbin/smbd''' - only return info on processes and users locking the file '''/usr/local/sbin/smbd'''. | '''fstat /usr/local/sbin/smbd''' - only return info on processes and users locking the file '''/usr/local/sbin/smbd'''. | ||
| + | |||
| + | === Process === | ||
| + | |||
| + | To determine the file status for a particular process the option '''-p ''pid-number''''' is used. For example assuming [[sendmail]]is assigned a [[pid]] of 677 (determined from the [[ps]] commend): | ||
| + | |||
| + | %fstat -p 677 | ||
| + | USER CMD PID FD MOUNT INUM MODE SZ|DV R/W | ||
| + | smmsp sendmail 677 root / 2 drwxr-xr-x 512 r | ||
| + | smmsp sendmail 677 wd /var 1036294 drwxrwx--- 512 r | ||
| + | smmsp sendmail 677 text /usr 3014716 -r-xr-sr-x 583680 r | ||
| + | smmsp sendmail 677 0 /dev 6 crw-rw-rw- null r | ||
| + | smmsp sendmail 677 1 /dev 6 crw-rw-rw- null w | ||
| + | smmsp sendmail 677 2 /dev 6 crw-rw-rw- null w | ||
| + | smmsp sendmail 677 3* local dgram c23b49d8 <-> c23b4dac | ||
| + | smmsp sendmail 677 4 /var 1036296 -rw------- 49 w | ||
=== User === | === User === | ||
Revision as of 07:58, 4 January 2008
fstat is a command similar to the lsof command Linux users are familiar with. Simply put, it returns a list of all open files and what user context they've been opened in. Handy arguments:
fstat -f /usr/local/etc - only return locked files from the filesystem containing /usr/local/etc/ (/usr, on most systems) fstat /usr/local/sbin/smbd - only return info on processes and users locking the file /usr/local/sbin/smbd.
Process
To determine the file status for a particular process the option -p pid-number is used. For example assuming sendmailis assigned a pid of 677 (determined from the ps commend):
%fstat -p 677 USER CMD PID FD MOUNT INUM MODE SZ|DV R/W smmsp sendmail 677 root / 2 drwxr-xr-x 512 r smmsp sendmail 677 wd /var 1036294 drwxrwx--- 512 r smmsp sendmail 677 text /usr 3014716 -r-xr-sr-x 583680 r smmsp sendmail 677 0 /dev 6 crw-rw-rw- null r smmsp sendmail 677 1 /dev 6 crw-rw-rw- null w smmsp sendmail 677 2 /dev 6 crw-rw-rw- null w smmsp sendmail 677 3* local dgram c23b49d8 <-> c23b4dac smmsp sendmail 677 4 /var 1036296 -rw------- 49 w
User
To determine the file status for a particular user the option -u username is used. For example when used against user account 'joeuser':
%fstat -u joeuser USER CMD PID FD MOUNT INUM MODE SZ|DV R/W joeuser fstat 96741 root / 2 drwxr-xr-x 512 r joeuser fstat 96741 wd /usr 2378753 drwxr-xr-x 512 r joeuser fstat 96741 text /usr 2308260 -r-xr-sr-x 14340 r joeuser fstat 96741 0 /dev 93 crw--w---- ttyp0 rw joeuser fstat 96741 1 /dev 93 crw--w---- ttyp0 rw joeuser fstat 96741 2 /dev 93 crw--w---- ttyp0 rw joeuser fstat 96741 3 /dev 26 crw-r----- mem r joeuser fstat 96741 4 /dev 27 crw-r----- kmem r joeuser fstat 96741 5 / 25179 -rw-r--r-- 40960 r joeuser csh 760 root / 2 drwxr-xr-x 512 r joeuser csh 760 wd /usr 2378753 drwxr-xr-x 512 r joeuser csh 760 text / 16628 -r-xr-xr-x 293060 r joeuser csh 760 15 /dev 93 crw--w---- ttyp0 rw joeuser csh 760 16 /dev 93 crw--w---- ttyp0 rw joeuser csh 760 17 /dev 93 crw--w---- ttyp0 rw joeuser csh 760 18 /dev 93 crw--w---- ttyp0 rw joeuser csh 760 19 /dev 93 crw--w---- ttyp0 rw joeuser sshd 759 root / 2 drwxr-xr-x 512 r joeuser sshd 759 wd / 2 drwxr-xr-x 512 r joeuser sshd 759 text /usr 1318917 -r-xr-xr-x 180452 r joeuser sshd 759 0 /dev 6 crw-rw-rw- null rw joeuser sshd 759 1 /dev 6 crw-rw-rw- null rw joeuser sshd 759 2 /dev 6 crw-rw-rw- null rw joeuser sshd 759 3* internet stream tcp c23cf1d0 joeuser sshd 759 4* local stream c23b47a8 <-> c23b4c94 joeuser sshd 759 5* pipe c2335660 <-> c2335718 0 rw joeuser sshd 759 6* pipe c2335718 <-> c2335660 0 rw joeuser sshd 759 7 /dev 92 crw-rw-rw- ptyp0 rw joeuser sshd 759 8 /dev 92 crw-rw-rw- ptyp0 rw joeuser sshd 759 9 /dev 92 crw-rw-rw- ptyp0 rw
