使用grep过滤空格和注释行

admin

过滤空格和注释行
# cat 文件  | grep -v "#" |grep -v "^$"
. _4 p6 q, N% ~; U4 x4 z- J
例如：
# cat /etc/keystone/keystone.conf  | grep -v "#" |grep -v "^$"
) y3 n3 o3 L- R5 m: i9 a1 A[DEFAULT]
0 L4 h7 I( t9 g; j/ W3 `[assignment]
[auth]
! m4 {0 G- T0 G& c8 J3 c[cache]
7 C5 T; J! ~. \[catalog]
[cors]
( K9 c* S  ?) y[credential]
8 U5 @; A" I. h[database]
4 [2 l/ O, c* X& n' h+ X4 @; h8 u* V3 a[domain_config]
[endpoint_filter]
" s' O% q! u7 Q  F[endpoint_policy]
) @, O6 ]  z* Q0 l( Q  h7 p+ o[eventlet_server]
% d+ F2 `- T' z2 W( P. m' f  G2 X[federation]
- v& x+ ^% x2 |0 ^[fernet_tokens]
[healthcheck]
[identity]
" x+ P5 _, `8 W9 f) i[identity_mapping]
4 q( }6 ~* K8 p0 {3 E1 B8 q[ldap]
6 [( A  ^, X6 O6 W; u1 A[matchmaker_redis]
[memcache]
[oauth1]
[oslo_messaging_amqp]
. F, F3 ]# X9 X- ~/ w4 c- q' f[oslo_messaging_kafka]
4 d' O. h/ w2 T[oslo_messaging_notifications]
+ h+ u. o  X. V1 }% |[oslo_messaging_rabbit]
* ~- a+ z2 t% S9 l[oslo_messaging_zmq]
: w+ u; g5 r& B% L# X[oslo_middleware]
[oslo_policy]
[paste_deploy]
# T0 t# U- `4 N[policy]
[profiler]
. i* j# {( Y/ @' t[resource]
' T; n# W3 I4 s  J[revoke]
[role]
[saml]
[security_compliance]
[shadow_users]
[signing]
% ~/ f: d. {6 K$ s[token]
0 a) M0 L/ `; @4 W  h- o[tokenless_auth]
[trust]
8 }& P) x/ Y( m0 `& X# k: }/ a

admin

用awk命令
9 M5 f  x$ Z) j/ [  wcat 文件名 |awk ‘{if($0!=”")print}'
cat 文件名 |awk ‘{if(length !=0) print $0}'

admin

# cat /etc/glance/glance-api.conf |grep -v "#" |grep -v "^$"
) i" n! s! Y8 J9 @. W[DEFAULT]
9 Y3 ], x, @2 j+ N. h  Y[cors]
[database]
[glance_store]
& j9 [/ t; V/ Z+ p2 e[image_format]
[keystone_authtoken]
  r9 n/ s" J$ n! `[matchmaker_redis]
[oslo_concurrency]
" J: c9 k. R0 k2 n/ O- n' n3 M! I[oslo_messaging_amqp]
! y& v" ~: H7 t% L% U) g) r[oslo_messaging_kafka]
! ?) |" r9 F1 a$ ]* @; i7 ?0 _[oslo_messaging_notifications]
9 h+ x4 i7 C  m8 \! ?[oslo_messaging_rabbit]
[oslo_messaging_zmq]
[oslo_middleware]
[oslo_policy]
  S- N( c+ s9 R; x2 z1 y, l[paste_deploy]
[profiler]
[store_type_location_strategy]
[task]
[taskflow_executor]