I want to separate a long path to multiple lines, like this:
cd foo1/foo2/foo3/foo4/bar
to
cd foo1\
foo2\
foo3\
foo4\
bar
2 Answers
You can separate a long command into multiple lines by using backslashes, but you would need to preserve the forward-slashes and omit the leading spaces:
cd foo1\
/foo2\
/foo3\
/foo4\
/bar
The backslashes are a line-continuation marker; when bash sees them, it incorporates the next line as if it was continued at the backslash of the current line. As a result, you couldn't use leading spaces on those subsequent lines, since they'd become spaces on the current line, creating a "too many arguments" error.
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i like it , but can i have indentnextloop– nextloop2021-03-18 13:20:01 +00:00Commented Mar 18, 2021 at 13:20
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3@AyoubElMhamdi No you can't have an indent.2021-03-18 13:20:26 +00:00Commented Mar 18, 2021 at 13:20
You could do this with an array but the cd command looks a bit complicated:
path=(
foo1
foo2
foo3
foo4
bar
)
cd "$(IFS=/; echo "${path[*]}")"
Array literals allow for arbitrary whitespace.
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that is better for indente, can you explain IFS meennextloop– nextloop2021-03-19 00:05:01 +00:00Commented Mar 19, 2021 at 0:05
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1The
"$*"and"${array[*]}"forms, when in double quotes, join all the elements into a single string, joined by the first character of the IFS variable. IFS is, by default, "space tab newline", so I redefine it in the subshell to hold the directory separator.glenn jackman– glenn jackman2021-03-19 15:18:50 +00:00Commented Mar 19, 2021 at 15:18 -
wow, i see some Magic here, it's perfect Mr @glenn-jackmannextloop– nextloop2021-03-21 01:38:32 +00:00Commented Mar 21, 2021 at 1:38
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donc ,you are using IFS to trim whitespace ? and converte to "/"nextloop– nextloop2021-03-21 01:41:26 +00:00Commented Mar 21, 2021 at 1:41
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1The array contains 5 elements with no extra whitespace. You can inspect the array using
declare -p path."${path[*]}"joins the elements into a single string using/, the first character of IFS.glenn jackman– glenn jackman2021-03-21 12:03:48 +00:00Commented Mar 21, 2021 at 12:03
/) automatically?