在 crontab 中找到 printf 的正确格式是什么？答案

【问题标题】：find printf what is correct format in crontab?在 crontab 中找到 printf 的正确格式是什么？
【发布时间】：2021-12-17 22:36:59
【问题描述】：

我想保存一个文件列表，我想在 cron 中做，但我不知道如何转换这个命令

echo $(find /tmp -type f -printf "%p||%s||||||") > /share/Public/serwer/test33.data

在终端中这个命令可以正常工作，但是在 cron 中是错误的，文件是空的，为什么？

我尝试在变量 %s %p 之前添加斜杠

我尝试了许多其他组合：

echo $(find /tmp -type f -printf "%p||%s||||||") > /share/Public/serwer/test33.data
echo $(find /tmp -type f -printf "%p||%s||||||") > /share/Public/serwer/test32.data
echo $(find /tmp -type f) > $TMP_DIR/test31.data
echo $(find $BACKUP_DIR -type f -printf \%p) > $TMP_DIR/test30.data
echo $(find $BACKUP_DIR -type f -printf %p) > $TMP_DIR/test28.data
echo $(find $BACKUP_DIR -type f) > $TMP_DIR/test27.data
echo $(find $BACKUP_DIR -type f -printf "ab") > $TMP_DIR/test26.data
echo $(find $BACKUP_DIR -type f -printf "||") > $TMP_DIR/test25.data
echo $(find $BACKUP_DIR -type f -printf "%p||%s\r\n") > $TMP_DIR/test01.data
echo $(find $BACKUP_DIR -type f -printf "\%p||\%s\r\n") > $TMP_DIR/test02.data
echo $(find $BACKUP_DIR -type f -printf "\%p") > $TMP_DIR/test03.data
echo $(find $BACKUP_DIR -type f -printf "\%s") > $TMP_DIR/test04.data
echo $(find $BACKUP_DIR -type f -printf "\\%s") > $TMP_DIR/test05.data
echo $(find $BACKUP_DIR -type f -printf "\\%p") > $TMP_DIR/test06.data
echo $(find $BACKUP_DIR -type f -printf "\r\n") > $TMP_DIR/test07.data
echo $(find $BACKUP_DIR -type f -printf) > $TMP_DIR/test10.data
echo $(find $BACKUP_DIR -type f -printf) > $TMP_DIR/test11.data
echo $(find $BACKUP_DIR -type f -printf "%p") > $TMP_DIR/test12.data
echo $(find $BACKUP_DIR -type f -printf "\%p") > $TMP_DIR/test13.data
echo `find $BACKUP_DIR -type f -printf "%p"` > $TMP_DIR/test14.data
echo `find $BACKUP_DIR -type f -printf "\\\\%p"` > $TMP_DIR/test15.data
echo `find $BACKUP_DIR -type f -printf \%p` > $TMP_DIR/test16.data
echo `find $BACKUP_DIR -type f -printf '\%p'` > $TMP_DIR/test17.data
echo `find $BACKUP_DIR -type f -printf '\\%p'` > $TMP_DIR/test18.data
echo `find $BACKUP_DIR -type f -printf '\\\%p'` > $TMP_DIR/test19.data
echo `find $BACKUP_DIR -type f -printf '\\\\%p'` > $TMP_DIR/test20.data
echo `find $BACKUP_DIR -type f -printf \%'s` > $TMP_DIR/test21.data
echo `find $BACKUP_DIR -type f -printf \%'p` > $TMP_DIR/test22.data
echo `find $BACKUP_DIR -type f -printf \%'p'` > $TMP_DIR/test23.data
echo `find $BACKUP_DIR -type f -printf \%'s'` > $TMP_DIR/test24.data

没有用

【问题讨论】：

你看过这个吗？ stetic.com/developer/cronjob-linux-tutorial-und-crontab-syntax
如何配置crontab的基本说明？
你想在 crontab 中运行你的命令吗？
对，如果我不添加 -printf 参数它运行正常
您是否尝试过使用脚本来保存您的陈述？然后它看起来像： * * * * * /usr/bin/script.sh >> /share/Public/serwer/test33.data

标签： bash cron find printf

【解决方案1】：

这个 crontab 条目应该可以工作：

* * * * * find /tmp -type f -printf "\%p||\%s||||||\n" > /share/Public/serwer/test33.data 2>/tmp/crontab.err

【讨论】：

【解决方案2】：

感谢菲利普，我这样做了，我有这样的东西：

find: unrecognized: -printf
BusyBox v1.24.1 (2021-09-23 02:31:15 CST) multi-call binary.

Usage: find [-HL] [PATH]... [OPTIONS] [ACTIONS]

Search for files and perform actions on them.
First failed action stops processing of current file.
Defaults: PATH is current directory, action is '-print'

    -L,-follow  Follow symlinks
    -H      ...on command line only
    -xdev       Don't descend directories on other filesystems
    -maxdepth N Descend at most N levels. -maxdepth 0 applies
            actions to command line arguments only
    -mindepth N Don't act on first N levels
    -depth      Act on directory *after* traversing it

Actions:
    ( ACTIONS ) Group actions for -o / -a
    ! ACT       Invert ACT's success/failure
    ACT1 [-a] ACT2  If ACT1 fails, stop, else do ACT2
    ACT1 -o ACT2    If ACT1 succeeds, stop, else do ACT2
            Note: -a has higher priority than -o
    -name PATTERN   Match file name (w/o directory name) to PATTERN
    -iname PATTERN  Case insensitive -name
    -path PATTERN   Match path to PATTERN
    -ipath PATTERN  Case insensitive -path
    -regex PATTERN  Match path to regex PATTERN
    -type X     File type is X (one of: f,d,l,b,c,...)
    -perm MASK  At least one mask bit (+MASK), all bits (-MASK),
            or exactly MASK bits are set in file's mode
    -mtime DAYS mtime is greater than (+N), less than (-N),
            or exactly N days in the past
    -mmin MINS  mtime is greater than (+N), less than (-N),
            or exactly N minutes in the past
    -newer FILE mtime is more recent than FILE's
    -inum N     File has inode number N
    -user NAME/ID   File is owned by given user
    -group NAME/ID  File is owned by given group
    -size N[bck]    File size is N (c:bytes,k:kbytes,b:512 bytes(def.))
            +/-N: file size is bigger/smaller than N
    -links N    Number of links is greater than (+N), less than (-N),
            or exactly N
    -prune      If current file is directory, don't descend into it
If none of the following actions is specified, -print is assumed
    -print      Print file name
    -print0     Print file name, NUL terminated
    -exec CMD ARG ; Run CMD with all instances of {} replaced by
            file name. Fails if CMD exits with nonzero
    -exec CMD ARG + Run CMD with {} replaced by list of file names
    -delete     Delete current file/directory. Turns on -depth option

【讨论】：

【解决方案3】：

我添加了命令查找的完整路径，现在它可以正常工作了

/share/CACHEDEV1_DATA/.qpkg/Qapache/bin/find $BACKUP_DIR -type f -printf "%p||%s\r"

感谢帮助

【讨论】：