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 "^$"
& [6 V: s: O7 K8 E
- s; O' ?# \. H2 n- W- w" R例如：
# cat /etc/keystone/keystone.conf  | grep -v "#" |grep -v "^$"
[DEFAULT]
[assignment]
[auth]
[cache]
[catalog]
0 {% C# J5 D" o' w! k% z[cors]
8 L$ w0 {# j- _% ]7 ?[credential]
: _8 M6 q' {$ Z! F# {[database]
[domain_config]
% H4 `  |1 I. P8 i$ F9 P8 ~3 S[endpoint_filter]
[endpoint_policy]
[eventlet_server]
[federation]
[fernet_tokens]
[healthcheck]
[identity]
6 W4 e: K( G4 x( R0 R" H[identity_mapping]
; d1 r/ R9 n$ `8 |[ldap]
; q# o2 o3 p. Z* b[matchmaker_redis]
$ ~9 X' r; s* h* i[memcache]
2 g8 G/ M! {; I# S$ I( V. m[oauth1]
  n8 F6 i5 l' Y1 e" L* r9 C[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_messaging_zmq]
4 {- Y8 Y' O  o1 Y2 h, Z[oslo_middleware]
[oslo_policy]
  S% {3 Y) W% V% m[paste_deploy]
4 U3 n" d% ^. R' e# V[policy]
9 V- S" Q* u8 }7 ?0 j[profiler]
[resource]
[revoke]
[role]
[saml]
[security_compliance]
[shadow_users]
" b5 l- C9 _6 V& l. j/ e# o[signing]
5 a' E2 o+ i6 Y6 L[token]
[tokenless_auth]
) ?& L5 W9 l$ s- s[trust]

admin

用awk命令
4 c+ s; u: ~2 Qcat 文件名 |awk ‘{if($0!=”")print}'
8 C  R! |, T/ t) L0 ^; x0 Kcat 文件名 |awk ‘{if(length !=0) print $0}'

admin

# cat /etc/glance/glance-api.conf |grep -v "#" |grep -v "^$"
[DEFAULT]
9 X9 A' @) Z- j2 s$ r[cors]
) |4 D" {# x: ]9 a: V; p[database]
[glance_store]
& z% f: C; D: p+ s; ]  M) P[image_format]
( l/ _0 Q9 g. }8 e2 C[keystone_authtoken]
[matchmaker_redis]
[oslo_concurrency]
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_messaging_zmq]
2 s- o/ \$ P& c& f- Y7 o7 k. M[oslo_middleware]
- T: [& q+ ]  X# }" ~[oslo_policy]
[paste_deploy]
/ ]" }- H8 u4 e) {9 K( `# X) d1 O[profiler]
9 [( K, \; h$ W% P2 v[store_type_location_strategy]
9 t( J/ t' a# e; a( q& x/ M[task]
$ P$ e4 s3 b0 q  K9 h0 J[taskflow_executor]