Compatibility

List of known current incompatibilities. The title tags can be searched for in the script.

Table of Contents

• INC01 grep -P
• INC02 date %N
• INC03 date -d
• INC04 mktemp --tmpdir

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[INC01] ↑

Problem: grep -P (with PCRE support) is not available in Mac OS X nor BSD systems.

Solution: install the GNU version of grep.

[INC02] ↑

To get the current time up to the millisecond.

local -ir __WEBERA_TIME_STAMP="$(date '+%s%3N')"

Problem: %N is not recognized by the BSD version of the date command.

Solution: install the GNU version of coreutils.

[INC03] ↑

To reformat a previously saved date in seconds.

local -r _DATE="$(date '+%Y-%m-%d %H:%M:%S' -d @"${__WEBERA_TIME_STAMP:0:10}")"

Problem: date -d is not compatible with BSD systems (source)

Solution: install the GNU version of coreutils.

Alternative: (depends on Bash >= 4.2)

    local -r _DATE="$(printf '%(%F %T)T\n' "$__WEBERA_TIME_STAMP")"

[INC04] ↑

To create a temporary file or directory

Problem: New syntax --tmpdir is not recognized in the BSD version of mktemp.

Solution: install the GNU version of coreutils.

Alternative: Use old syntax -t.