For security, pretty much every file I transfer over the network I use 'scp'. Or more likely (to save time and traffic) I tunnel 'tar' through 'ssh'. This compresses the data, transferes securly through the network, and then de-compress on the other end. But it can be a pain remembering the exact syntax, and others have requested a script to help with this.
So to help I wrote the following script:
#!/bin/bash
#
# tscp
#
# Copyright 2011 nairb <code@nairb.us>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
tarscp(){
if [ $1 ] ; then
myaddress=''
localfile=''
localtoremote=''
if [ -z sshopts ]; then
sshopts="-2 -A"
fi
for i in $@ ; do
if [ $(echo $i |grep -iE '^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}:.*') ] ; then
myaddress=$i
if [ $localfile ] ; then
localtoremote="true"
fi
else
if [ -f $i -o -d $i ] ; then
localfile=$i
fi
fi
done
if [ $myaddress ] ; then
remotepath=$(echo $myaddress |cut -d ':' -f2)
myaddress=$(echo $myaddress |cut -d ':' -f1)
else
echo -e "yo, come on...\nneed to give a full address and path\nlike: 'myuser@myhost.com:~/some/folder/or/file'" && return 1
fi
checkremotepathcom="if [ -d $remotepath -o -f $remotepath ] ; then echo 0 ; else echo 1 ; fi"
if [ $(ssh $sshopts $myaddress "$checkremotepathcom") == 0 ] ; then
if [ $localfile ] ; then
if [ $localtoremote ] ; then
checkremotepathcom="if [ -d $remotepath ] ; then echo 0 ; else echo 1 ; fi"
if [ $(ssh $sshopts $myaddress "$checkremotepathcom") == 0 ] ; then
remotecom="cd $remotepath ; tar -xzf -"
tar -czvf - $localfile |ssh $sshopts $myaddress "$remotecom"
else
echo "yo dude. that path aint on the server." && return 1
fi
else
if [ $remotepath == '~/' ] ; then
remotefile=$(ssh $sshopts $myaddress "pwd")
remotefile=$(echo $remotefile |cut -d '/' -f $(echo $remotefile |sed -e 's/\//\/ /g' |wc -w))
remotecom="cd $remotepath ; cd ../ ; tar -czvf - $remotefile"
else
remotefile=$(echo $remotepath |cut -d '/' -f $(echo $remotepath |sed -e 's/\//\/ /g' |wc -w))
if [ -z $(echo $remotepath |cut -d '/' -f 1) ] ; then
mypath='/'
else
mypath='~/'
fi
for i in $(seq 2 $(($(echo $remotepath |sed -e 's/\//\/ /g' |wc -w) - 1))) ; do
mypath=$mypath/$(echo $remotepath | cut -d '/' -f $i)
done
remotepath=$mypath
mypath=''
remotecom="cd $remotepath ; tar -czvf - $remotefile"
fi
if [ -d $localfile ] ; then
cd $localfile
fi
if [ $remotepath == '/' ] ; then
remotecom="tar -czvf - /"
fi
ssh $sshopts $myaddress "$remotecom" | tar -xzf -
fi
else
if [ $remotepath == '~/' ] ; then
remotefile=$(ssh $sshopts $myaddress "pwd")
remotefile=$(echo $remotefile |cut -d '/' -f $(echo $remotefile |sed -e 's/\//\/ /g' |wc -w))
remotecom="cd $remotepath ; cd ../ ; tar -czvf - $remotefile"
else
remotefile=$(echo $remotepath |cut -d '/' -f $(echo $remotepath |sed -e 's/\//\/ /g' |wc -w))
if [ -z $(echo $remotepath |cut -d '/' -f 1) ] ; then
mypath='/'
else
mypath='~/'
fi
for i in $(seq 2 $(($(echo $remotepath |sed -e 's/\//\/ /g' |wc -w) - 1))) ; do
mypath=$mypath/$(echo $remotepath | cut -d '/' -f $i)
done
remotepath=$mypath
mypath=''
remotecom="cd $remotepath ; tar -czvf - $remotefile"
fi
if [ $remotepath == '/' ] ; then
remotecom="tar -czvf - /"
fi
ssh $sshopts $myaddress "$remotecom" | tar -xzf -
fi
else
echo "dude, that path aint on the server." && return 1
fi
else
echo -e "no arguments given fool\ntry again" && return 1
fi
}
case $(echo ${0##*/} |cut -d '/' -f $(echo ${0##*/} |wc -w)) in
tscp)
tarscp $@
;;
*)
echo -e "come on... just call the script 'tscp'"
;;
esac
And, if like me, you find yourself logging into a server that doesnt have the script saved, and you dont want to make a new script file (maybe you only need to use the command once to migrate data from your old server to a new one). I converted the above into a 1-liner function that can just be pasted in and used with the same call. Alternatively you could include this function in one of your functions rc files like mentioned in my
previous post.
Regardless of the reason, here is the 1-liner function:
tscp(){ if [ $1 ] ; then myaddress=''; localfile=''; localtoremote=''; if [ -z sshopts ]; then sshopts="-2 -A"; fi; for i in $@ ; do if [ $(echo $i |grep -iE '^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}:.*') ] ; then myaddress=$i; if [ $localfile ] ; then localtoremote="true"; fi; else if [ -f $i -o -d $i ] ; then localfile=$i; fi; fi; done; if [ $myaddress ] ; then remotepath=$(echo $myaddress |cut -d ':' -f2); myaddress=$(echo $myaddress |cut -d ':' -f1); else echo -e "yo, come on...\nneed to give a full address and path\nlike: 'myuser@myhost.com:~/some/folder/or/file'" && return 1 ; fi; checkremotepathcom="if [ -d $remotepath -o -f $remotepath ] ; then echo 0 ; else echo 1 ; fi"; if [ $(ssh $sshopts $myaddress "$checkremotepathcom") == 0 ] ; then if [ $localfile ] ; then if [ $localtoremote ] ; then checkremotepathcom="if [ -d $remotepath ] ; then echo 0 ; else echo 1 ; fi"; if [ $(ssh $sshopts $myaddress "$checkremotepathcom") == 0 ] ; then remotecom="cd $remotepath ; tar -xzf -"; tar -czvf - $localfile |ssh $sshopts $myaddress "$remotecom"; else echo "yo dude. that path aint on the server." && return 1 ; fi; else if [ $remotepath == '~/' ] ; then remotefile=$(ssh $sshopts $myaddress "pwd"); remotefile=$(echo $remotefile |cut -d '/' -f $(echo $remotefile |sed -e 's/\//\/ /g' |wc -w)); remotecom="cd $remotepath ; cd ../ ; tar -czvf - $remotefile"; else remotefile=$(echo $remotepath |cut -d '/' -f $(echo $remotepath |sed -e 's/\//\/ /g' |wc -w)); if [ -z $(echo $remotepath |cut -d '/' -f 1) ] ; then mypath='/'; else mypath='~/'; fi; for i in $(seq 2 $(($(echo $remotepath |sed -e 's/\//\/ /g' |wc -w) - 1))) ; do mypath=$mypath/$(echo $remotepath | cut -d '/' -f $i); done; remotepath=$mypath; mypath=''; remotecom="cd $remotepath ; tar -czvf - $remotefile"; fi; if [ -d $localfile ] ; then cd $localfile; fi; if [ $remotepath == '/' ] ; then remotecom="tar -czvf - /" ; fi; ssh $sshopts $myaddress "$remotecom" | tar -xzf -; fi; else if [ $remotepath == '~/' ] ; then remotefile=$(ssh $sshopts $myaddress "pwd"); remotefile=$(echo $remotefile |cut -d '/' -f $(echo $remotefile |sed -e 's/\//\/ /g' |wc -w)); remotecom="cd $remotepath ; cd ../ ; tar -czvf - $remotefile"; else remotefile=$(echo $remotepath |cut -d '/' -f $(echo $remotepath |sed -e 's/\//\/ /g' |wc -w)); if [ -z $(echo $remotepath |cut -d '/' -f 1) ] ; then mypath='/'; else mypath='~/'; fi; for i in $(seq 2 $(($(echo $remotepath |sed -e 's/\//\/ /g' |wc -w) - 1))) ; do mypath=$mypath/$(echo $remotepath | cut -d '/' -f $i); done; remotepath=$mypath; mypath=''; remotecom="cd $remotepath ; tar -czvf - $remotefile"; fi; if [ $remotepath == '/' ] ; then remotecom="tar -czvf - /" ; fi; ssh $sshopts $myaddress "$remotecom" | tar -xzf -; fi; else echo "dude, that path aint on the server." && return 1 ; fi; else echo -e "no arguments given fool\ntry again" && return 1 ; fi; }
Hope you find this helpful. Thanks for reading.
***** UPDATE *****
Sorry to anyone who copied this earlier today. The functionality worked for some folders (not including '~/', or '/'), but it has now been edited to work for those. Also now including ssh options like '-2 -A' and I have fixed it to work for single file, which failed before (since you can only 'cd' into a directory, not a file)
Also the prior 'exit' lines have been changed to 'return' to prevent the terminal window being closed if you run from the function without the right arguments.
Again sorry for posting it prior to thorough testing (these things hapen with insomnia posting scripts at 5am with no sleep), but it has been fixed now, and tested on both debian, and ubuntu computers/servers
I may still update this again to make it more organized, but will likely release future revisions as file downloads on my own site instead of this blog (its a kinda long script already to copy and paste)
****
