[英]Mix command and variables in shell scripting
我需要一個非常簡單的shell腳本來處理文件夾上的所有圖像並更改其大小。 圖像處理是使用gimp script-fu完成的,shell腳本必須做的唯一事情是for循環。
我做的:
#!/bin/sh
mkdir processed
for image in `ls`
do
if [ $image != "script.sh" ]
then
if [ $image != "processed" ]
then
gimp -i -b '(let* ( (img (gimp-file-load 1 "1.jpg" "1.jpg")) (drw (gimp-image-get-active-drawable (car img))) ) (gimp-image-scale-full 1 400 300 3) (file-jpeg-save 1 (car img) (car drw) "processed/1.jpg" "1.jpg" 0.6 0 1 1 "" 3 0 0 2) (gimp-quit 0) )'
fi
fi
done
這段代碼有效但是,在腳本fu代碼中我把1.jpg作為文件名,當然,我希望看到$ image變量的值。 我的shell腳本知識是有限的,我失去了我必須將變量放在命令中的方式。
你能幫助我嗎? 謝謝你的時間 :)
for image in *
而不是ls
for image in *
。
要將變量傳遞給Gimp腳本並保留Gimp的引號,您需要對外部引號使用雙引號並轉義內部引號:
gimp -i -b "(let* ( (img (gimp-file-load 1 \"$image\" \"$image\")) (drw (gimp-image-get-active-drawable (car img))) ) (gimp-image-scale-full 1 400 300 3) (file-jpeg-save 1 (car img) (car drw) \"processed/$image\" \"$image\" 0.6 0 1 1 "" 3 0 0 2) (gimp-quit 0) )"
您還可以簡化腳本:
mkdir processed
for image in *.jpg
do
if [[ -f $image ]]
then
gimp ...
fi
done
如果您想要包含更多擴展程序:
for image in *.{jpg,JPG,jpeg,JPEG,gif,GIF,png,PNG}
另一種可能更具可讀性的方法:
mkdir processed
gimp_script_template='(let* (
(img (gimp-file-load 1 "%s" "%s"))
(drw (gimp-image-get-active-drawable (car img)))
)
(gimp-image-scale-full 1 400 300 3)
(file-jpeg-save 1 (car img) (car drw) "processed/%s" "%s" 0.6 0 1 1 "" 3 0 0 2)
(gimp-quit 0)
)'
for img in *; do
[ ! -f "$img" ] && continue
[ "$img" = "script.sh" ] && continue
gimp_script="$( printf "$gimp_script_template" "$img" "$img" "$img" "$img" )"
gimp -i -b "$gimp_script"
done
你可以試試
"'(let* ( (img (gimp-file-load 1 "$image" "$image")) (drw (gimp-image-get-active-drawable (car img))) ) (gimp-image-scale-full 1 400 300 3) (file-jpeg-save 1 (car img) (car drw) "processed/$image" "$image" 0.6 0 1 1 "" 3 0 0 2) (gimp-quit 0) )'"
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