X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=fish%2Fguestfish.pod;h=21b264a3c10a2869aeaa4c7936a12871adebac07;hb=64fcfa644aca8a83412991520f7e5b7a652e505f;hp=254daad64d50015b9a5b625e52b398989166dc32;hpb=b408c0d5f484d42d128ff64b27e7bbdbbc81d452;p=libguestfs.git

diff --git a/fish/guestfish.pod b/fish/guestfish.pod
index 254daad..21b264a 100644
--- a/fish/guestfish.pod
+++ b/fish/guestfish.pod
@@ -973,6 +973,39 @@ user ID of the process, and C<$PID> is the process ID of the server.
 
 Guestfish client and server versions must match exactly.
 
+=head2 USING REMOTE CONTROL ROBUSTLY FROM SHELL SCRIPTS
+
+From Bash, you can use the following code which creates a guestfish
+instance, correctly quotes the command line, handles failure to start,
+and cleans up guestfish when the script exits:
+
+ #!/bin/bash -
+ 
+ set -e
+ 
+ guestfish[0]="guestfish"
+ guestfish[1]="--listen"
+ guestfish[2]="--ro"
+ guestfish[3]="-a"
+ guestfish[4]="disk.img"
+ 
+ GUESTFISH_PID=
+ eval $("${guestfish[@]}")
+ if [ -z "$GUESTFISH_PID" ]; then
+     echo "error: guestfish didn't start up, see error messages above"
+     exit 1
+ fi
+ 
+ cleanup_guestfish ()
+ {
+     guestfish --remote -- exit >/dev/null 2>&1 ||:
+ }
+ trap cleanup_guestfish EXIT ERR
+ 
+ guestfish --remote -- run
+ 
+ # ...
+
 =head2 REMOTE CONTROL RUN COMMAND HANGING
 
 Using the C<run> (or C<launch>) command remotely in a command