Question

In BASH, I want to do something like this:

#!/bin/bash                                                                     

HOST="blah"
USER="foo"
REMOTE_ROOT="${HOST}:~${USER}/"

REP_NAME=`basename $1`
TARGET_NAME="${REP_NAME}.git"

CMD1="git clone --bare $1 $TARGET_NAME"
CMD2="touch ${TARGET_NAME}/git-daemon-export-ok"
CMD3="scp -r $TARGET_NAME $REMOTE_ROOT"
CMD4="rm -rf $TARGET_NAME"

for i in {1..4}
do
  CMD="${CMD${i}}"
  echo "$CMD"
  `$CMD`
done

That is to say, I want to loop over a list of commands, display the command being executed, then execute it.

I don’t know how to do the double dereferencing (CMD=”${CMD${i}}” isn’t legal in BASH).

Alternately, I’d be happy to do something like:

for CMD in "CMD1 CMD2 CMD3 CMD4"
do
  echo $$CMD
done

but of course that isn’t the right syntax, either.

Answer 1

CMDS[1]="git clone --bare $1 $TARGET_NAME"
CMDS[2]="touch ${TARGET_NAME}/git-daemon-export-ok"
CMDS[3]="scp -r $TARGET_NAME $REMOTE_ROOT"
CMDS[4]="rm -rf $TARGET_NAME"

# ...

for x in 1 2 3 4
do
    ${CMDS[x]};
done