Re: use of "build.sh -B BUILDID".... with patch and more questions
"Greg A. Woods" <[email protected]>
| Newsgroups | gmane.os.netbsd.current,gmane.os.netbsd.devel.toolchain |
|---|---|
| Organization | Planix, Inc. |
| Message-ID | <[email protected]> |
At Mon, 8 Dec 2025 06:51:51 +0000 (UTC), RVP <[email protected]> wrote: Subject: Re: use of "build.sh -B BUILDID".... with patch and more questions > > On Fri, 5 Dec 2025, Jarle Greipsland wrote: > > > val=${val#"${val%%[![:blank:]]*}"} > > val=${val%"${val##*[![:blank:]]}"} > > > > Yes! More people should stash this in their shell tips-'n-tricks collection. > I think you can get rid of the `"'. I have: > > ``` > $ cat /mnt/bak/sdf/tmp/fbsd/tt.txt > [...] > - Remove leading zeros from a variable: > $ v=${v#${v%%[!0]*}}; v=${v:-0} > > - Remove leading blanks (may leave `v' empty if `v' is all blanks): > $ v=${v#${v%%[![:blank:]]*}} > > - Remove trailing blanks (may also result in an empty `v'): > $ v=${v%${v##*[![:blank:]]}} > [...] Awesome! Remember though that pdksh, including NetBSD ksh(1) (and OpenBSD ksh and mksh) don't (yet) implement character classes for patterns, so you have to replace the '[:blank:]' part with '" "' (space and tab, probably with the double quotes). -- Greg A. Woods <[email protected]> Kelowna, BC +1 250 762-7675 RoboHack <[email protected]> Planix, Inc. <[email protected]> Avoncote Farms <[email protected]>
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