sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ash: expr -e support

Browse source
This commit is contained in:
David van Moolenbroek 2010-06-16 09:33:11 +00:00
parent 482afb8a6f
commit 0964b221e7
3 changed files with 6 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
commands/ash/bltin/expr.c
View file

@ -279,6 +279,9 @@ expr_operator(op, sp, fs)
sp->u.num = expr_is_false(sp); sp->u.num = expr_is_false(sp);
sp->type = BOOLEAN; sp->type = BOOLEAN;
break; break;
case EXISTS:
if (fs->rcode >= 0) goto true;
goto false;
case ISREAD: case ISREAD:
i = 04; i = 04;
goto permission; goto permission;

1
commands/ash/bltin/unary_op
View file

@ -5,6 +5,7 @@
# by the Ash General Public License. See the file named LICENSE. # by the Ash General Public License. See the file named LICENSE.
NOT ! 3 NOT ! 3
EXISTS -e 12 OP_FILE
ISREAD -r 12 OP_FILE ISREAD -r 12 OP_FILE
ISWRITE -w 12 OP_FILE ISWRITE -w 12 OP_FILE
ISEXEC -x 12 OP_FILE ISEXEC -x 12 OP_FILE

2
man/man1/expr.1
View file

@ -153,6 +153,8 @@ The remaining operators all deal with files. Except as noted, they return
false if the false if the
specified file does not exist. The ones dealing with permission use specified file does not exist. The ones dealing with permission use
the effective user and group ids of the shell. the effective user and group ids of the shell.
.u \-e string boolean
True the file exists.
.u \-r string boolean .u \-r string boolean
True if you have read permission on the file. True if you have read permission on the file.
.u \-w string boolean .u \-w string boolean