有人建议我在这里发帖，因为这会更合适（我将删除上一篇）。
在我的 MacBook 上，我的 root 中有以下条目crontab：
0 */4 * * * cd /private/var/root && ./locate.updatedb
我有一个别名locatein ~/.zshrc：
alias locate='locate -d /var/db/locate.database'
当我执行“ locate Table_Synthesis_GREY_”时，在找到的所有文件的完整路径中，指示文件系统根目录的路径的第一个斜杠丢失了。以下是输出示例：
Users/henry/Projects/JUNK_AND_OLD/Travail_9_Paper_Combinaison_et_Methode_des_biais_communs_pour_ma_These_SAUVEGARDES/TABLES_FLAT_AND_NON_FLAT_to_include_into_my_Phd_paper_LAST/Table_Synthesis_Main_05_AOUT_2020/temp/Table_Synthesis_GREY_IMPORTANT_SAVE_5_AOUT_2020.run.xml
Users/henry/Projects/JUNK_AND_OLD/Travail_9_Paper_Combinaison_et_Methode_des_biais_communs_pour_ma_These_SAUVEGARDES/TABLES_FLAT_AND_NON_FLAT_to_include_into_my_Phd_paper_LAST/Table_Synthesis_Main_05_AOUT_2020/temp/Table_Synthesis_GREY_IMPORTANT_SAVE_5_AOUT_2020.tex
Users/henry/Projects/JUNK_AND_OLD/Travail_9_Paper_Combinaison_et_Methode_des_biais_communs_pour_ma_These_SAUVEGARDES/TABLES_FLAT_AND_NON_FLAT_to_include_into_my_Phd_paper_LAST/Table_Synthesis_Main_05_AOUT_2020/temp/Table_Synthesis_GREY_IMPORTANT_SAVE_5_AOUT_2020.zip
Users/henry/Projects/JUNK_AND_OLD/Travail_9_Paper_Combinaison_et_Methode_des_biais_communs_pour_ma_These_SAUVEGARDES/TABLES_FLAT_AND_NON_FLAT_to_include_into_my_Phd_paper_LAST/Table_Synthesis_Main_05_AOUT_2020/temp/Table_Synthesis_GREY_IMPORTANT_SAVE_5_AOUT_2020_ORIGINAL_INTO_zip_here.pdf
Users/henry/Projects/JUNK_AND_OLD/Travail_9_Paper_Combinaison_et_Methode_des_biais_communs_pour_ma_These_SAUVEGARDES/TABLES_FLAT_AND_NON_FLAT_to_include_into_my_Phd_paper_LAST/Table_Synthesis_Main_AFTER_05_AOUT_2020/FLAT_Synthesis/Table_Synthesis_GREY_FLAT.docx
如何将路径输出为绝对路径，即从 开始/Users？期望的输出是
/Users/henry/Projects/JUNK_AND_OLD/Travail_9_Paper_Combinaison_et_Methode_des_biais_communs_pour_ma_These_SAUVEGARDES/TABLES_FLAT_AND_NON_FLAT_to_include_into_my_Phd_paper_LAST/Table_Synthesis_Main_AFTER_05_AOUT_2020/FLAT_Synthesis/Table_Synthesis_GREY_FLAT.docx
相对于
Users/henry/Projects/JUNK_AND_OLD/Travail_9_Paper_Combinaison_et_Methode_des_biais_communs_pour_ma_These_SAUVEGARDES/TABLES_FLAT_AND_NON_FLAT_to_include_into_my_Phd_paper_LAST/Table_Synthesis_Main_AFTER_05_AOUT_2020/FLAT_Synthesis/Table_Synthesis_GREY_FLAT.docx
更新1：我已复制/usr/libexec/locate.updatedb到我的主根目录中，即/var/root/.我这样做是因为我无法修改该/usr/libexec/locate.updatedb文件，即使being root或使用sudo.
所以在另一个文件中/var/root/locate.updatedb，我可以进行修改：
if [ "$(id -u)" = "99" ]; then
而不是最初：
if [ "$(id -u)" = "0" ]; then
你觉得这个技巧怎么样？主要是为什么当结果进入我的/Users/henry/.
0 */4 * * * cd /private/var/root ; /bin/sh locate.updatedb
但问题仍然存在。
顺便说一句，如果结果位于 /Applications 或其他主目录中但没有系统地，第一个斜杠显示得很好。
脚本的内容不是很大，这里是：
# $FreeBSD: src/usr.bin/locate/locate/updatedb.sh,v 1.20 2005/11/12 12:45:08 grog Exp $
if [ "$(id -u)" = "99" ]; then
rc=0
export FCODES=`sudo -u nobody mktemp -t updatedb`
chown nobody $FCODES
tmpdb=`su -fm nobody -c "$0"` || rc=1
if [ $rc = 0 ]; then
install -m 0444 -o nobody -g wheel $FCODES /var/db/locate.database
fi
rm $FCODES
exit $rc
fi
: ${LOCATE_CONFIG="/etc/locate.rc"}
if [ -f "$LOCATE_CONFIG" -a -r "$LOCATE_CONFIG" ]; then
. $LOCATE_CONFIG
fi
# The directory containing locate subprograms
: ${LIBEXECDIR:=/usr/libexec}; export LIBEXECDIR
: ${TMPDIR:=/tmp}; export TMPDIR
if ! TMPDIR=`mktemp -d $TMPDIR/locateXXXXXXXXXX`; then
exit 1
fi
PATH=$LIBEXECDIR:/bin:/usr/bin:$PATH; export PATH
# 6497475
set -o noglob
: ${mklocatedb:=locate.mklocatedb} # make locate database program
: ${FCODES:=/var/db/locate.database} # the database
: ${SEARCHPATHS:="/"} # directories to be put in the database
: ${PRUNEPATHS:="/private/tmp /private/var/folders /private/var/tmp */Backups.backupdb"} # unwanted directories
: ${FILESYSTEMS:="hfs ufs apfs"} # allowed filesystems
: ${find:=find}
case X"$SEARCHPATHS" in
X) echo "$0: empty variable SEARCHPATHS"; exit 1;; esac
case X"$FILESYSTEMS" in
X) echo "$0: empty variable FILESYSTEMS"; exit 1;; esac
# Make a list a paths to exclude in the locate run
excludes="! (" or=""
for fstype in $FILESYSTEMS
do
excludes="$excludes $or -fstype $fstype"
or="-or"
done
excludes="$excludes ) -prune"
case X"$PRUNEPATHS" in
X) ;;
*) for path in $PRUNEPATHS
do
excludes="$excludes -or -path $path -prune"
done;;
esac
# Ignore the target of firmlinks
while read firmlink; do
excludes="$excludes -or -path $firmlink -prune"
done <<< "$(awk -F'\t' '{print "/System/Volumes/Data/" $2}' /usr/share/firmlinks)"
tmp=$TMPDIR/_updatedb$$
trap 'rm -f $tmp; rmdir $TMPDIR; exit' 0 1 2 3 5 10 15
# search locally
# echo $find $SEARCHPATHS $excludes -or -print && exit
if $find -s $SEARCHPATHS $excludes -or -print 2>/dev/null |
$mklocatedb -presort > $tmp
then
case X"`$find $tmp -size -257c -print`" in
X) cat $tmp > $FCODES;;
*) echo "updatedb: locate database $tmp is empty"
exit 1
esac
fi
有人有线索吗？
更新2：下面的输出sudo ls -Alh /private/var/root：
total 128K
-r-------- 1 root wheel 7 Dec 8 23:29 .CFUserTextEncoding
drwx------ 3 root wheel 96 Dec 8 23:29 .Trash
-rw------- 1 root wheel 5.6K Oct 21 20:49 .bash_history
drwx------ 3 root wheel 96 Dec 8 23:44 .bash_sessions
drwx------ 3 root wheel 96 Oct 16 14:02 .config
-rw------- 1 root wheel 2.5K Dec 9 02:55 .dircolors
-r--r--r-- 1 root wheel 10 Apr 17 2020 .forward
drwxr-xr-x 4 root wheel 128 Apr 10 2020 .grc
drwxr-xr-x 3 root wheel 96 Oct 6 00:15 .gsutil
drwxr-xr-x 2 root wheel 64 Jan 1 00:40 .nedit
drwxr-xr-x 4 root wheel 128 Oct 5 22:38 .parallel
drwx------ 3 root wheel 96 Sep 17 02:49 .ssh
-rw------- 1 root wheel 14K Jan 17 14:21 .viminfo
-rw-r--r-- 1 root wheel 2.9K Dec 9 02:57 .vimrc
-rw-r--r-- 1 root wheel 47K Dec 9 02:56 .zcompdump
-rw------- 1 root wheel 15K Jan 19 22:55 .zsh_history
-rw-r--r-- 1 root wheel 17K Dec 22 17:52 .zshrc
drwx------ 2 root wheel 64 Dec 8 23:29 Downloads
drwxr-xr-x 44 root wheel 1.4K Dec 13 15:05 Library
-rwxr-xr-x 1 root wheel 3.6K Jan 11 01:52 locate.updatedb
此外，我将数据库构建为：
$ ls -l /var/db/locate.database
-rw-r--r-- 1 root 330M Jan 24 17:01 /var/db/locate.database
更新3：如果我用“”恢复if [ "$(id -u)" = "0" ]; then，我可以从 root 用户启动：
mktemp: too few X's in template ‘updatedb’
chown: missing operand after ‘nobody’
Try 'chown --help' for more information.
zsh:1: permission denied: ./locate.updatedb
rm: missing operand
Try 'rm --help' for more information.
更新4：这是最后一期：
如果我做 ：
if [ "$(id -u)" = "0" ]; then
rc=0
#export FCODES=`sudo -u nobody mktemp -t updatedb`
export FCODES=`sudo -u nobody mktemp -t updatedbXXXXXXXXXX`
chown nobody $FCODES
tmpdb=`su -fm nobody -c "$0"` || rc=1
if [ $rc = 0 ]; then
install -m 0444 -o nobody -g wheel $FCODES /var/db/locate.database
fi
rm $FCODES
exit $rc
fi
如果我启动locate.updatedb脚本，我会得到：
# ./locate.updatedb
zsh:1: permission denied: ./locate.updatedb
任何想法 ？
答案1
我将使用自定义脚本并将其别名为locate命令。一条建议：
#!/bin/bash
path=$(locate $1)
full_path=$(dirname $path)
echo $full_path