On Thu, Aug 12, 2010 at 11:06 PM, David C. Rankin <drankinatty@xxxxxxxxxxxxxxxxxx> wrote: > Guys, > > I'm either misunderstanding how to control expansion of wildcards on > the command line when passing the parameter containing the wildcard as a cli > option to a script or the bash controls to allow that are broken. I want to > set up a little script alias to search /var/abs for packages and I want the > ability to pass either 'name' or 'name*' or '*name*' as input, but if there > is anything matching in the current directory, expansion happens before the > cli is passed to the script. > > Reading, I should be able to turn globbing off with either 'set -f' > or 'set -o noglob' and then I should be able to pass the parameter contained > a wildcard to the script without any pathname expansion. That appears broken > -- or my logic is broken. > > From man bash 'set -f' or 'set -o noglob on' should prevent > expansion: > > set [+abefhkmnptuvxBCEHPT] [+o option] [arg ...] > <snip> > -f Disable pathname expansion. > <snip> > -o option-name > The option-name can be one of the following: > <snip> > noglob Same as -f. > > EXAMPLE: > > touch pacman-foo > > then use the following as your test script (tst.sh): > > #!/bin/bash > > myvar="$1" > > printf "Search: %s\n" $myvar > > exit 0 > > Now since i have a file called pacman-foo in my directory trying to > pass 'pacman*' should result in expansion before the cli is read resulting > in: > > 00:42 nirvana:~/scr/arch/tmp> ./tst.sh pacman* > Search: pacman-foo > > single-quoting doesn't even protect the cli?? : > > 00:42 nirvana:~/scr/arch/tmp> ./tst.sh 'pacman*' > Search: pacman-foo > > Now try 'set -f' to disable pathname expanstion: > > 01:00 nirvana:~/scr/arch/tmp> set -f > 01:02 nirvana:~/scr/arch/tmp> ./tst.sh pacman* > Search: pacman-foo > 01:02 nirvana:~/scr/arch/tmp> ./tst.sh 'pacman*' > Search: pacman-foo > > Huh? Now try 'set -o noglob' > > 01:02 nirvana:~/scr/arch/tmp> set -o noglob > 01:03 nirvana:~/scr/arch/tmp> ./tst.sh pacman* > Search: pacman-foo > 01:04 nirvana:~/scr/arch/tmp> ./tst.sh 'pacman*' > Search: pacman-foo > > Huh? Again.. What gives is it bash or is it something I'm reading > wrong? > > > > -- > David C. Rankin, J.D.,P.E. > Rankin Law Firm, PLLC > 510 Ochiltree Street > Nacogdoches, Texas 75961 > Telephone: (936) 715-9333 > Facsimile: (936) 715-9339 > www.rankinlawfirm.com > quote command arguments like you would normally do. ie. $ myscript "*pacman*"
