Avoid unsupported grep options

Signed-off-by: Tudor Florea <tudor.florea@enea.com>
Upstream-Status: Pending

diff -ruN a/ts/ipcs/headers b/ts/ipcs/headers
--- a/tests/ts/ipcs/headers	2013-09-04 11:03:36.118613250 +0200
+++ b/teste/ts/ipcs/headers	2013-09-04 11:03:27.906958437 +0200
@@ -22,35 +22,35 @@
 ts_init "$*"
 
 ts_log "test: shm headers"
-$TS_CMD_IPCS -m -t | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -m -p | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -m -c | grep --after-context=1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -m -t | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -m -p | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -m -c | grep -A 1 "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -m -l | grep "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -m -u | grep "^---"  >> $TS_OUTPUT
 echo >> $TS_OUTPUT
 
 ts_log "test: mesg headers"
-$TS_CMD_IPCS -q -t | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -q -p | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -q -c | grep --after-context=1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -q -t | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -q -p | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -q -c | grep -A 1 "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -q -l | grep  "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -q -u | grep  "^---"  >> $TS_OUTPUT
 echo >> $TS_OUTPUT
 
 ts_log "test: sem headers"
-$TS_CMD_IPCS -s -t | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -s -p | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -s -c | grep --after-context=1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -s -t | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -s -p | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -s -c | grep -A 1 "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -s -l | grep  "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -s -u | grep  "^---"  >> $TS_OUTPUT
 echo >> $TS_OUTPUT
 
 ts_log "test: all headers"
-$TS_CMD_IPCS -a | grep --after-context=1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -a | grep -A 1 "^---"  >> $TS_OUTPUT
 
-$TS_CMD_IPCS -a -t | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -a -p | grep --after-context=1 "^---"  >> $TS_OUTPUT
-$TS_CMD_IPCS -a -c | grep --after-context=1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -a -t | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -a -p | grep -A 1 "^---"  >> $TS_OUTPUT
+$TS_CMD_IPCS -a -c | grep -A 1 "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -a -l | grep "^---"  >> $TS_OUTPUT
 $TS_CMD_IPCS -a -u | grep "^---"  >> $TS_OUTPUT