[英]Bash: loop through files that DO NOT match extension
I'm writing a bash script that needs to loop files inside a directory that do not match a specific extension. 我正在编写一个bash脚本,需要在目录中循环与特定扩展名不匹配的文件。 So far, I've found that the following code loops all files that matches the given extension: 到目前为止,我发现以下代码循环所有匹配给定扩展名的文件:
for f in *.txt ; do
echo $f;
done
How could insthead loop through files that do not match the specified extension? insthead如何循环遍历与指定扩展名不匹配的文件?
You can pattern-match with the ==
operator. 您可以使用==
运算符进行模式匹配。
for f in *; do
[[ $f == *.txt ]] && continue
# [[ $f != *.txt ]] || continue
...
done
If this might run in an empty directory, either use shopt -s nullglob
prior to the loop, or put [ -e "$f" ] || continue
如果这可能在空目录中运行,则在循环之前使用shopt -s nullglob
,或者放入[ -e "$f" ] || continue
[ -e "$f" ] || continue
in side the loop. 循环[ -e "$f" ] || continue
。 (The former is preferable, as it avoids constantly checking if a file exists.) (前者更可取,因为它可以避免不断检查文件是否存在。)
to loop files inside a directory that do not match a specific extension 循环目录中与特定扩展名不匹配的文件
You can use extglob
: 你可以使用extglob
:
shopt -s extglob
for f in *.!(txt); do
echo "$f"
done
pattern *.!(txt)
will match all entries with a dot and no txt
after the dot. pattern *.!(txt)
将匹配所有带点后的条目,并且点后没有txt
。
EDIT: Please see comments below. 编辑:请参阅下面的评论。 Here is a find
version to loop through files in current directory that don't match a particular extension: 这是一个循环查看当前目录中与特定扩展名不匹配的文件的find
版本:
while IFS= read -d '' -r f; do
echo "$f"
done < <(find . -maxdepth 1 -type f -not -name '*.txt' -print0)
Do 做
find /path/to/look -type f -not -name "*.txt" -print0 | while read -r -d '' file_name
do
echo "$file_name"
done
when your filenames may be nonstandard. 当你的文件名可能是非标准的。
Note: 注意:
If you don't wish to recursively search for files in subfolders include -maxdepth 1
如果您不希望以递归方式搜索子文件夹中的文件,请包括-maxdepth 1
just before -type f
. 就在前-type f
。
This will do: 这样做:
shopt -s extglob
for f in !(*.txt) ; do
echo $f
done
You just inverse the glob pattern using !(glob_pat)
, and to use it, you need to enable extended glob. 你只需使用!(glob_pat)
反转glob模式,并使用它,你需要启用扩展的glob。
If you want to ignore directories, then: 如果要忽略目录,则:
shopt -s extglob
for f in !(*.txt) ; do
[ -d "$f" ] && continue # This will ignore dirs
# [ -f "$f" ] && continue # This will ignore files
echo $f
done
If you wanna go into all sub-dirs then: 如果你想进入所有子目录,那么:
shopt -s extglob globstar
for f in !(*.txt) **/!(*.txt) ; do
[ -d "$f" ] && continue # This will ignore dirs
# [ -f "$f" ] && continue # This will ignore files
echo $f
done
If you are ok for a GNU
solution, give a try to this: 如果您对GNU
解决方案没问题,请试试这个:
for f in $(find . -maxdepth 1 -type f \! -name \*.txt) ; do
printf "%s\n" "${f}"
done
This is going to break if special chars are contained in the filenames, such as 如果文件名中包含特殊字符,则会中断,例如 (space). (空间)。
For something safe, still GNU
, try: 对于安全的东西,仍然是GNU
,尝试:
find . -maxdepth 1 -type f \! -name \*.txt -printf "%p\0" | xargs -0 sh -c '
for f ; do
printf "%s\n" "${f}"
done' arg0
for f in $(ls --hide="*.txt")
do
echo $f
done
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