git pre-commit + mysqldump: cannot find path, not existing command

问题

I have windows 7 but I think it doesn't count, because the hook uses git shell. I tried to dump my database by commit with the following code, but it did not work.

#!/bin/sh
# Refresh the SQL schema file for inclusion within the git commit

# If something fails, exit with status other than 0
set -e

# select dump directory
    cd $(git rev-parse --show-toplevel)
    cd WebShop/DataBase

# first, remove our original schema
rm -f backup.sql

# generate a new schema
mysqldump -u root --password=root webshopdb > backup.sql

# Add the schema to the next commit
git add backup.sql

# Exit success
exit 0

I've got 2 error messages:

The path doesn't exist, because the space in a directory name breaks it.

    cd $(git rev-parse --show-toplevel)

Cannot find command

    mysqldump -u root --password=root webshopdb > backup.sql

Is it possible to fix it?

回答1:

I was trying to do this too, and came up with mixed results, but ultimately this does work. Maybe git has had a few updates since last year that fixed the problem? Maybe it's because I'm on a mac? Here's the pre-commit I use now. (Thanks to everyone's help)

#!/bin/sh

# Dump a fresh copy of the database
mysqldump -u root --password="password" myDB --skip-extended-insert > dump.sql
git add dump.sql

Note: The --skip-extended-insert is not necessary to make any changes to the bash, I just like the way my SQL dumps can be tracked in git with that extra option added.

what seemed to matter was how I was running the git command

If I ran git from the commandline, then there were no problems.

If I ran git via SourceTree, then there are errors unless SourceTree is run from the commandline too.

回答2:

If git is in your path in your .profile/.bash_profile etc you shouldn't need to set it. That said you are only "add"ing the file and not committing it. After you add you need to run

 git commit -m "updated schema"

回答3:

To debug sh, use

sh -x script

(comment set -e)

and you may source your rc file at the beginning to avoid using full paths :

source ~/.shrc

回答4:

I fixed the errors, it creates the sql file, but still doesn't add it to the commit. I don't know why...

The fixed code:

#!/bin/sh
# Refresh the SQL schema file for inclusion within the git commit

# If something fails, exit with status other than 0
set -e

# select dump directory
cd "$(git rev-parse --show-toplevel)"

# first, remove our original schema
rm -f "WebShop\DataBase\backup.sql"

# generate a new schema
exec "C:\Program Files\MySQL\MySQL Server 5.5\bin\mysqldump.exe" --skip-comments -u root --password=root webshopdb |sed 's$),($),\n($g' > "WebShop\DataBase\backup.sql"

# Add the schema to the next commit
git add "WebShop\DataBase\backup.sql"

# Exit success
exit 0

If we have whitespace in the path we have to use it between double quotes.
I used the exec and the full path of mysqldump.exe instead of the mysqldump command.
Made some changes by mysqldump options:
- skip comments (to prevent file change caused by creation time footer)
- split insert into multiple lines by sed

回答5:

I know the OP already found his solution, but for anyone looking for a pre-commit hook for mysqldump, check this Gist out.. it should do the job for you: https://gist.github.com/wilcollins/dfa33ef20caf6dab5826

#!/bin/bash -e
# -e means exit if any command fails
DBHOST=address.to.your.server
DBUSER=username
DBPASS=password # do this in a more secure fashion
DBNAME=DBNAME
GITREPO=/where/is/your/repo
DUMP=$GITREPO/where/you/store/dumps
NEW=$DUMP/schema.sql
OLD=$NEW.old

DIR=$(pwd)
cd $GITREPO

mv $NEW $OLD

mysqldump -h $DBHOST -u $DBUSER -p$DBPASS $DBNAME --skip-dump-date --single-transaction > $NEW

# NOTE : the new schema.sql file & location need to be added to your GIT repo & ignore .old

if cmp -s $OLD $NEW; then
    echo Same
else
    echo Differ
    git commit $NEW -m "$DBNAME DB update"
    echo "schema+data committed"

    git push # assuming you have a remote to push to
    echo "schema+data pushed"
fi
cd $DIR

来源：https://stackoverflow.com/questions/9235682/git-pre-commit-mysqldump-cannot-find-path-not-existing-command

标签

git

bash

hook

mysqldump