code: read location accepted inputs are /home/(10 chars) or /(10 chars) or (10 chars)

Question

Asked: May 26, 20262026-05-26T14:32:51+00:00 2026-05-26T14:32:51+00:00

code:

read location

accepted inputs are

"/home/(10 chars)" or "/(10 chars)" or "(10 chars)"

how to check for valid input? and how to cut the 10 chars from $location variable?

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Editorial Team · Answer 1 · 2026-05-26T14:32:52+00:00

I would use a grep expression like so:

echo $location | grep -xq "\w\{10\}\|/\w\{10\}\|/home/\w\{10\}"

This matches lines which are exactly one of the following cases( caused by the -x ) and doesn’t print the matching line (caused by the -q)

To use this in a script, just drop it in an if statement like so:

if echo "$location" | grep -xq "\w\{10\}\|/\w\{10\}\|/home/\w\{10\}"; then
    # location valid
else
    # location not valid
fi

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