A NOTE has been added to this issue. ====================================================================== https://www.austingroupbugs.net/view.php?id=1861 ====================================================================== Reported By: stephane Assigned To: ====================================================================== Project: 1003.1(2024)/Issue8 Issue ID: 1861 Category: Shell and Utilities Type: Error Severity: Objection Priority: normal Status: Interpretation Required Name: Stephane Chazelas Organization: User Reference: Section: xargs utility Page Number: 3601 Line Number: 123207-123214 Interp Status: Proposed Final Accepted Text: https://www.austingroupbugs.net/view.php?id=1861#c6918 ====================================================================== Date Submitted: 2024-10-11 12:32 UTC Last Modified: 2024-10-18 06:34 UTC ====================================================================== Summary: xargs -L broken by https://www.austingroupbugs.net/view.php?id=243 resolution ====================================================================== Relationships ID Summary ---------------------------------------------------------------------- related to 0000243 Add -print0 to "find" ======================================================================
---------------------------------------------------------------------- (0006922) stephane (reporter) - 2024-10-18 06:34 https://www.austingroupbugs.net/view.php?id=1861#c6922 ---------------------------------------------------------------------- Thanks for the quick resolution. An extra change IMO worth applying and that was not mentioned in my original request: I'd change: find . -type f -print0 | xargs -0 -p -L 1 ar -r arch to: find . -type f -print0 | xargs -r -0 -p -n 1 ar -r arch That is: 1. (unrelated) add -r so ar be not called with one empty argument if no regular file is found. 2. Change -n to -L which would be more canonical. -L suggests "Line" which is confusing with -0, where -L is an alias for -n for no better meaning to give to it there. It would probably be worth giving an example showing the difference between -n and -L given so many people are confused about them (and many also wrongly assume xargs works with lines in general). Maybe something like: <pre> xargs -L2 sh -c 'IFS=,; printf "%d: <%s>\n" "$#" "$*"' sh << 'EOF' a b "\\ c //" d e f g EOF </pre> Where that inline sh script is passed the arguments from 2 lines at a time giving: <pre> 5: <a,b,\ c /,d,e> 2: <f,g> </pre> To be compared with: <pre> xargs -L2 sh -c 'IFS=,; printf "%2d: <%s>\n" "$#" "$*"' sh << 'EOF' a b "\\ c //" d e f g EOF </pre> Where the script is passed 2 arguments at a time regardless of which lines those come from, giving: <pre> 2: <a,b> 2: <\\ c //,d> 2: <e,f> 1: g </pre> Issue History Date Modified Username Field Change ====================================================================== 2024-10-11 12:32 stephane New Issue 2024-10-11 12:32 stephane Name => Stephane Chazelas 2024-10-11 12:32 stephane Section => xargs utility 2024-10-11 12:32 stephane Page Number => 3601 2024-10-11 12:32 stephane Line Number => 123207-123214 2024-10-11 16:28 stephane Note Added: 0006913 2024-10-12 05:57 stephane Note Added: 0006914 2024-10-14 16:13 geoffclare Note Added: 0006916 2024-10-15 05:09 stephane Note Added: 0006917 2024-10-15 05:23 stephane Note Edited: 0006917 2024-10-17 09:08 geoffclare Note Added: 0006918 2024-10-17 09:12 geoffclare Relationship added related to 0000243 2024-10-17 15:12 geoffclare Note Edited: 0006918 2024-10-17 15:12 geoffclare Interp Status => Pending 2024-10-17 15:12 geoffclare Final Accepted Text => https://www.austingroupbugs.net/view.php?id=1861#c6918 2024-10-17 15:12 geoffclare Status New => Interpretation Required 2024-10-17 15:12 geoffclare Resolution Open => Accepted As Marked 2024-10-17 15:13 geoffclare Tag Attached: tc1-2024 2024-10-17 16:25 agadmin Interp Status Pending => Proposed 2024-10-17 16:25 agadmin Note Added: 0006921 2024-10-18 06:34 stephane Note Added: 0006922 ======================================================================
