我有这样的数据
prdnf001:app_prd_areas_sp2_ux
prdnf001:app_prd_cx_local_ux
prdnf001:app_prd_cx_ux
prdnf001:app_prd_ftt_ux
prdnf001:app_prd_local_ux
prdnf001:app_prd_app_ux
devnf001:app_syt_ds_backup1
devnf001:app_syt_ds_sybsft1
devnf001:app_syt_ftt_ux
devnf001:app_syt_app_ux
devnf001:app_uat_cx_ux
我会输出分组喜欢这个：
prdnf001
prdnf001:app_prd_areas_sp2_ux
prdnf001:app_prd_cx_local_ux
prdnf001:app_prd_cx_ux
prdnf001:app_prd_ftt_ux
prdnf001:app_prd_local_ux
prdnf001:app_prd_app_ux
devnf001
devnf001:app_syt_ds_backup1
devnf001:app_syt_ds_sybsft1
devnf001:app_syt_ftt_ux
devnf001:app_syt_app_ux
devnf001:app_uat_cx_ux
到目前为止，这是我正在使用的代码。我究竟做错了什么？ 感谢
awk 'split($1,svm,":");{if (svm[1] == f1) { print svm[1] }else print svm[1];f1=svm[1] }'
答案 0 :(得分：0)
awk -F ':' 'saved!=$1{saved=$1; print saved} {print}' file
输出：
prdnf001
prdnf001:app_prd_areas_sp2_ux DP prdnf001-dr:app_prd_areas_sp2_ux_m Snapmirrored
prdnf001:app_prd_cx_local_ux DP prdnf001-dr:app_prd_cx_local_ux_m Snapmirrored
prdnf001:app_prd_cx_ux DP prdnf001-dr:app_prd_cx_ux_m Snapmirrored
prdnf001:app_prd_ftt_ux DP prdnf001-dr:app_prd_ftt_ux_m Snapmirrored
prdnf001:app_prd_local_ux DP prdnf001-dr:app_prd_local_ux_m Snapmirrored
prdnf001:app_prd_app_ux DP prdnf001-dr:app_prd_app_ux_m Snapmirrored
devnf001
devnf001:app_syt_ds_backup1 DP tstnf001:app_syt_ds_backup1_m Snapmirrored
devnf001:app_syt_ds_sybsft1 DP tstnf001:app_syt_ds_sybsft1_m Snapmirrored
devnf001:app_syt_ftt_ux DP tstnf001:app_syt_ftt_ux_m Snapmirrored
devnf001:app_syt_app_ux DP tstnf001:app_syt_app_ux_m Snapmirrored
devnf001:app_uat_cx_ux DP tstnf001:app_uat_cx_ux_m Snapmirrored